Abrégé

2+2+-hydrocarbons into a methane depleted fraction as product composition and into a methane enriched fraction, in particular for separating liquified petroleum gas from fuel gas, wherein the plant comprises: a) a distillation column comprising an inlet line, an overheads outlet line for the methane enriched fraction and a bottom outlet line for the methane depleted fraction, b) a pre-condenser for condensing a portion of the methane enriched fraction, wherein the pre-condenser is connected with the overheads outlet line of the distillation column, c) a second condenser for condensing a portion of the methane enriched fraction so as to produce a mixed-phase effluent comprising a condensed phase and a vapor phase, wherein the pre-condenser is arranged between the overheads outlet line of the distillation column and the second condenser, wherein the second condenser is directly connected with the pre-condenser, d) a gas-liquid separator for the partially condensed methane enriched fraction being connected with the second condenser, wherein the gas-liquid separator comprises an outlet line for gas and an outlet line for liquid, wherein the outlet line for liquid is connected with the distillation column, and e) a turboexpander being connected with the outlet line for gas of the gas-liquid separator and comprising an outlet line for expanded gas, wherein the outlet line for expanded gas is directly or indirectly connected with the second condenser so as to cool the methane enriched fraction within the second condenser using the expanded gas as cooling agent, wherein the second condenser further comprises an outlet line for withdrawing the expanded gas from the second condenser.

Classes IPC  ?

• F25J 3/02 - Procédés ou appareils pour séparer les constituants des mélanges gazeux impliquant l'emploi d'une liquéfaction ou d'une solidification par rectification, c. à d. par échange continuel de chaleur et de matière entre un courant de vapeur et un courant de liquide

Abrégé

A method for purifying a fatty acid isopropyl ester comprising the following steps: a) providing a crude fatty acid isopropyl ester composition containing a fatty acid isopropyl ester to be purified, at least one fatty acid and optionally at least one fatty acid ester being different from the fatty acid isopropyl ester to be purified, and b) subjecting the crude fatty acid isopropyl ester composition provided in step a) to a distillation in a divided-wall column so as to produce an overhead stream, a bottom stream and a side stream, wherein the side stream is the purified fatty acid isopropyl ester composition.

Classes IPC  ?

• C07C 67/54 - Séparation; Purification; Stabilisation; Emploi d'additifs par modification de l'état physique, p.ex. par cristallisation par distillation
• C07C 67/08 - Préparation d'esters d'acides carboxyliques par réaction d'acides carboxyliques ou d'anhydrides symétriques avec le groupe hydroxyle ou O-métal de composés organiques
• C07C 69/24 - Esters d'acides acycliques monocarboxyliques saturés dont le groupe carboxyle est lié à un atome de carbone acyclique ou à l'hydrogène avec au moins trois atomes de carbone dans la partie acide estérifiés par des composés monohydroxylés
• B01D 3/14 - Distillation fractionnée

Abrégé

A process for producing hydrogen comprises the following steps: a) providing a starting mixture containing bromine, water and a sulfur containing compound, b) reacting the starting mixture provided in step a) so as to produce a reaction mixture effluent comprising sulfuric acid and hydrogen bromide, c) separating the reaction mixture effluent obtained in step b) into one or more hydrogen bromide enriched compositions and into one or more sulfuric acid enriched compositions, wherein at least one hydrogen bromide enriched composition contains at most 1,000 ppm of sulfuric acid, wherein step c) comprises at least two distillation steps, d) subjecting at least a portion of the at least one hydrogen bromide enriched composition containing at most 1,000 ppm of sulfuric acid obtained in step c) to an electrolysis so as to obtain hydrogen and a bromine containing composition, wherein the electrolysis cell is operated at an operational temperature of at least 70°C, and e) recycling at least a portion of the bromine containing composition obtained in step d) back to step a).

Classes IPC  ?

• C25B 1/02 - Hydrogène ou oxygène
• C25B 1/04 - Hydrogène ou oxygène par électrolyse de l'eau
• C25B 1/24 - Halogènes ou leurs composés
• C25B 9/23 - Cellules comprenant des électrodes fixes de dimensions stables; Assemblages de leurs éléments de structure avec des diaphragmes comprenant des membranes échangeuses d'ions dans ou sur lesquelles est incrusté du matériau pour électrode
• C25B 13/08 - PROCÉDÉS ÉLECTROLYTIQUES OU ÉLECTROPHORÉTIQUES POUR LA PRODUCTION DE COMPOSÉS ORGANIQUES OU MINÉRAUX, OU DE NON-MÉTAUX; APPAREILLAGES À CET EFFET Éléments d'espacement caractérisés par le matériau à base de matériaux organiques
• C25B 15/08 - Alimentation ou vidange des réactifs ou des électrolytes; Régénération des électrolytes
• C01B 17/74 - Préparation
• B01D 53/46 - Elimination des composants de structure définie
• B01D 53/96 - Régénération, réactivation ou recyclage des réactifs

Abrégé

22(s)222).

Classes IPC  ?

• C07C 29/124 - Préparation de composés comportant des groupes hydroxyle ou O-métal liés à un atome de carbone ne faisant pas partie d'un cycle aromatique à six chaînons par hydrolyse d'esters d'acides minéraux d'halogénures
• C07C 31/04 - Méthanol
• C07C 19/075 - Composés acycliques saturés contenant des atomes d'halogène contenant du brome
• C25B 1/24 - Halogènes ou leurs composés
• C25B 9/19 - Cellules comprenant des électrodes fixes de dimensions stables; Assemblages de leurs éléments de structure avec des diaphragmes
• C25B 15/08 - Alimentation ou vidange des réactifs ou des électrolytes; Régénération des électrolytes
• C25B 1/02 - Hydrogène ou oxygène
• C07C 17/06 - Préparation d'hydrocarbures halogénés par addition d'halogènes combinée avec le remplacement d'atomes d'hydrogène par des halogènes

Abrégé

The disclosure provides a process for producing methanol and hydrogen from methane. The process of the disclosure comprises the steps of: • a) providing a gaseous feed stream comprising methane; • b) reacting said gaseous feed stream with at least one halogen reactant, under reaction conditions effective to produce an effluent stream comprising methyl halide, hydrogen halide, optionally polyhalogenated alkanes, and optionally unreacted methane; • c) recovering said an effluent stream, • d) reacting the recovered effluent stream with water and at least one organic base under reaction conditions effective to produce an aqueous solution of hydrogen halide, and a methanol stream comprising methanol (MeOH) and dimethyl ether (DME) and/or optionally unreacted methane, and, e) decomposing by means of electrolysis said aqueous solution of hydrogen halide under conditions effective to produce a gaseous hydrogen stream and a stream comprising halogen reactant.

Classes IPC  ?

• C07C 29/124 - Préparation de composés comportant des groupes hydroxyle ou O-métal liés à un atome de carbone ne faisant pas partie d'un cycle aromatique à six chaînons par hydrolyse d'esters d'acides minéraux d'halogénures
• C07C 31/04 - Méthanol
• C07C 19/075 - Composés acycliques saturés contenant des atomes d'halogène contenant du brome
• C25B 1/24 - Halogènes ou leurs composés
• C25B 9/19 - Cellules comprenant des électrodes fixes de dimensions stables; Assemblages de leurs éléments de structure avec des diaphragmes
• C25B 15/08 - Alimentation ou vidange des réactifs ou des électrolytes; Régénération des électrolytes
• C25B 1/02 - Hydrogène ou oxygène
• C07C 41/01 - Préparation d'éthers
• C07C 17/06 - Préparation d'hydrocarbures halogénés par addition d'halogènes combinée avec le remplacement d'atomes d'hydrogène par des halogènes

Abrégé

gg ≥ 110°C in an electrolysis of hydrogen bromide, wherein the hydrogen bromide stems from a bromination of a hydrocarbon.

Classes IPC  ?

• C25B 1/02 - Hydrogène ou oxygène
• C25B 1/04 - Hydrogène ou oxygène par électrolyse de l'eau
• C25B 1/24 - Halogènes ou leurs composés
• C25B 9/23 - Cellules comprenant des électrodes fixes de dimensions stables; Assemblages de leurs éléments de structure avec des diaphragmes comprenant des membranes échangeuses d'ions dans ou sur lesquelles est incrusté du matériau pour électrode
• C25B 13/08 - PROCÉDÉS ÉLECTROLYTIQUES OU ÉLECTROPHORÉTIQUES POUR LA PRODUCTION DE COMPOSÉS ORGANIQUES OU MINÉRAUX, OU DE NON-MÉTAUX; APPAREILLAGES À CET EFFET Éléments d'espacement caractérisés par le matériau à base de matériaux organiques
• C25B 15/08 - Alimentation ou vidange des réactifs ou des électrolytes; Régénération des électrolytes
• C07C 17/10 - Préparation d'hydrocarbures halogénés par remplacement par des halogènes d'atomes d'hydrogène
• C07C 19/075 - Composés acycliques saturés contenant des atomes d'halogène contenant du brome
• C08F 214/26 - Tétrafluoro-éthylène
• C08J 5/22 - Bandes, membranes ou diaphragmes

Abrégé

A method of electrolysing hydrogen bromide comprising the steps i) brominating a hydrocarbon such that hydrogen bromide is produced, ii) providing an electrolytic cell comprising an anode, a cathode, and a membrane sandwiched between the anode and the cathode, iii) feeding a first composition comprising hydrogen bromide and water to the anode, iv) feeding a second composition comprising hydrogen bromide and water to the cathode, and v) operating the electrolytic cell to produce hydrogen at the cathode, wherein the hydrogen bromide fed in step iii) and/or the hydrogen bromide fed in step iv) is hydrogen bromide produced in step i).

Classes IPC  ?

• C25B 1/02 - Hydrogène ou oxygène
• C25B 1/04 - Hydrogène ou oxygène par électrolyse de l'eau
• C25B 1/24 - Halogènes ou leurs composés
• C25B 9/23 - Cellules comprenant des électrodes fixes de dimensions stables; Assemblages de leurs éléments de structure avec des diaphragmes comprenant des membranes échangeuses d'ions dans ou sur lesquelles est incrusté du matériau pour électrode
• C25B 13/08 - PROCÉDÉS ÉLECTROLYTIQUES OU ÉLECTROPHORÉTIQUES POUR LA PRODUCTION DE COMPOSÉS ORGANIQUES OU MINÉRAUX, OU DE NON-MÉTAUX; APPAREILLAGES À CET EFFET Éléments d'espacement caractérisés par le matériau à base de matériaux organiques
• C25B 15/08 - Alimentation ou vidange des réactifs ou des électrolytes; Régénération des électrolytes
• C07C 17/10 - Préparation d'hydrocarbures halogénés par remplacement par des halogènes d'atomes d'hydrogène
• C07C 19/075 - Composés acycliques saturés contenant des atomes d'halogène contenant du brome
• C08F 214/26 - Tétrafluoro-éthylène
• C08J 5/22 - Bandes, membranes ou diaphragmes

Abrégé

A process for removing at least a sulfur containing compound from gas containing at least one sulfur containing compound, wherein the process comprises the following steps: a) contacting a gas stream containing at least one sulfur containing compound with a stream containing bromine and water so as to obtain a starting stream, b) reacting the starting stream provided in step a) so as to produce a reaction mixture effluent comprising sulfuric acid and hydrogen bromide, c) separating the reaction mixture effluent obtained in step b) into one or more hydrogen bromide enriched compositions and into one or more sulfuric acid enriched compositions, d) subjecting at least a portion of the at least one hydrogen bromide enriched composition obtained in step c) to a treatment, in which at least a portion of the hydrogen bromide enriched composition is converted to bromine, e) recycling at least a portion of the bromine containing composition obtained in step d) back to step a), and f) withdrawing gas, which is depleted in the at least one sulfur containing compound wherein step c) comprises at least one distillation step, wherein, in the case that the reaction mixture is a single-phase liquid composition, either the reaction mixture effluent or a mixture of the reaction mixture effluent and a sulfuric acid enriched composition obtained in step c) is subjected as feed to a first distillation step, or, in the case that the reaction mixture effluent is a two-phase gas-/liquid composition, first the two-phase gas-/liquid composition is separated into a gaseous portion of the reaction mixture effluent and into a liquid portion of the reaction mixture effluent, whereafter the liquid portion of the reaction mixture effluent or a mixture of the liquid portion of the reaction mixture effluent and a sulfuric acid enriched composition obtained in step c) is subjected as feed to a first distillation step, wherein the feed is separated in the first distillation step into a gaseous overhead composition of a hydrogen bromide enriched composition containing at most 1,000 ppm of sulfuric acid and into a liquid bottom composition of a sulfuric acid enriched composition containing more than 30% by weight of sulfuric acid and less than 1,000 ppm of hydrogen bromide, wherein a) at least a portion of the gaseous hydrogen bromide enriched composition obtained in the first distillation step as overhead composition is subjected to a water removal step so as to separate the hydrogen bromide enriched composition into a water enriched composition and into a gaseous hydrogen bromide-rich, water depleted composition comprising 90 to 99% by weight of hydrogen bromide and less than 10% by weight of water, wherein at least a portion of the gaseous hydrogen bromide-rich, water depleted composition is subjected in step d) to an electrolysis or to a thermal oxidation step, and/or P) step c) comprises at least two distillation steps, wherein the sulfuric acid enriched composition obtained as liquid bottom composition of the first distillation step is subjected to a second distillation step so as to produce an overhead composition and a bottom composition containing 60 to 95% by weight of sulfuric acid and 5 to 40% by weight of water based on the total weight of the bottom composition, wherein at least a portion of the bottom composition of the second distillation step is preferably subjected to a third distillation step so as to produce an overhead composition containing at least 99.0% by weight of water and less than 10 ppm of hydrogen bromine and a bottom composition containing at least 90% by weight of sulfuric acid and less than 10% by weight of water based on the total weight of the bottom composition, wherein a portion of the bottom composition obtained in the second distillation step and/or a portion of the bottom composition obtained in the third distillation step is recycled to and mixed as sulfuric acid enriched composition with the reaction mixture effluent or with the liquid portion of the reaction mixture effluent so as to obtain a mixture containing at least 35% by weight of sulfuric acid based on the total weight of the mixture, wherein the mixture is subjected as feed to the first distillation step.

Classes IPC  ?

• C01B 17/69 - Anhydride sulfurique; Acide sulfurique
• B01D 53/48 - Composés du soufre
• C01B 3/00 - Hydrogène; Mélanges gazeux contenant de l'hydrogène; Séparation de l'hydrogène à partir de mélanges en contenant; Purification de l'hydrogène
• C01B 17/88 - Concentration de l'acide sulfurique
• C01B 17/90 - Séparation; Purification
• C25B 1/24 - Halogènes ou leurs composés

Abrégé

22(s)222).

Classes IPC  ?

• C07C 17/06 - Préparation d'hydrocarbures halogénés par addition d'halogènes combinée avec le remplacement d'atomes d'hydrogène par des halogènes
• C07C 41/01 - Préparation d'éthers
• C07C 19/075 - Composés acycliques saturés contenant des atomes d'halogène contenant du brome
• C07C 29/124 - Préparation de composés comportant des groupes hydroxyle ou O-métal liés à un atome de carbone ne faisant pas partie d'un cycle aromatique à six chaînons par hydrolyse d'esters d'acides minéraux d'halogénures
• C07C 43/04 - Ethers saturés
• C25B 1/24 - Halogènes ou leurs composés
• C25B 9/19 - Cellules comprenant des électrodes fixes de dimensions stables; Assemblages de leurs éléments de structure avec des diaphragmes
• C25B 15/08 - Alimentation ou vidange des réactifs ou des électrolytes; Régénération des électrolytes

Abrégé

Invention relates to pump unit (1) for pumping liquid or suspension, the pump unit (1) comprises a centrifugal pump (2) and an inducer (3) in a proximity upstream of an inlet (210) of the centrifugal pump (2): - the centrifugal pump (2) comprises a pump housing (21) forming a flow channel (20) inside the pump housing (21) and an impeller (22) configured to be rotated in the flow channel (20) around a central axis (200) by a shaft (23), - the inducer (3) comprises an inducer rotor (32) having sleeve-shaped rotor body (321), the inducer rotor (32) is configured to be rotated around the central axis 200 in the flow channel (20), the rotor body (321) is provided with a number of blades (323) extending inwards from the rotor body (321), - the inducer rotor (32) is separate to the impeller (22) and rotation speed of the inducer rotor (32) is independently controllable in relation to the rotation speed of the impeller (22), the inducer (3) comprises an electric motor (35) that is an annular motor that encircles and is connected to the inducer rotor (32). The invention relates also to a method for controlling a pump unit.

Classes IPC  ?

• F04D 1/06 - Pompes multiétagées
• F04D 7/04 - Pompes adaptées à la manipulation de liquides particuliers, p.ex. par choix de matériaux spéciaux pour les pompes ou pièces de pompe du type centrifuge les fluides étant visqueux ou non homogènes
• F04D 9/00 - Amorçage; Prévention du blocage par la vapeur
• F04D 13/06 - Ensembles comprenant les pompes et leurs moyens d'entraînement la pompe étant entraînée par l'électricité
• F04D 15/00 - Commande, p.ex.régulation de pompes, d'installations ou de systèmes de pompage
• F04D 29/22 - Rotors spécialement pour les pompes centrifuges
• F04D 29/66 - Lutte contre la cavitation, les tourbillons, le bruit, les vibrations ou phénomènes analogues; Equilibrage
• F04D 31/00 - Pompage simultané de liquides et de fluides compressibles

Abrégé

Invention relates to pump unit 1 for pumping liquid or suspension, the pump unit (1) comprises a centrifugal pump (2) and an inducer (3) in a proximity upstream of an inlet (210) of the centrifugal pump (2): - the centrifugal pump (2) comprises a pump housing (21) forming a flow channel (20) inside the pump housing (21) and an impeller (22) configured to be rotated in the flow channel (20) around a central axis (200) by a shaft (23), - the inducer (3) comprises an inducer rotor (32) having sleeve-shaped rotor body (321), the inducer rotor (32) is configured to be rotated around the central axis (200) in the flow channel (20), the rotor body (321) is provided with a number of blades (323) extending inwards from the rotor body (321), - the inducer rotor (32) is separate to the impeller (22) and rotation speed of the inducer rotor (32) is independently controllable in relation to the rotation speed of the impeller (22), the inducer (3) comprises an electric motor (35) that is an annular motor that encircles and is connected to the inducer rotor (32). The invention relates also to a method for controlling a pump unit.

Classes IPC  ?

• F04D 1/06 - Pompes multiétagées
• F04D 7/04 - Pompes adaptées à la manipulation de liquides particuliers, p.ex. par choix de matériaux spéciaux pour les pompes ou pièces de pompe du type centrifuge les fluides étant visqueux ou non homogènes
• F04D 9/00 - Amorçage; Prévention du blocage par la vapeur
• F04D 13/06 - Ensembles comprenant les pompes et leurs moyens d'entraînement la pompe étant entraînée par l'électricité
• F04D 15/00 - Commande, p.ex.régulation de pompes, d'installations ou de systèmes de pompage
• F04D 29/22 - Rotors spécialement pour les pompes centrifuges
• F04D 29/66 - Lutte contre la cavitation, les tourbillons, le bruit, les vibrations ou phénomènes analogues; Equilibrage
• F04D 31/00 - Pompage simultané de liquides et de fluides compressibles

Abrégé

A process of producing polylactic acid comprising the steps of: a) providing a crude lactide composition comprising meso-lactide and at least one of L-lactide and D-lactide, b) separating from the crude lactide composition a meso-lactide enriched composition and a meso-lactide depleted composition, wherein the meso-lactide enriched composition contains at least 80 mol-% of meso-lactide based on the total content of lactide, c) polymerizing a polymerization composition comprising meso-lactide and at least one of L-lactide and D-lactide to a crude polylactic acid composition and devolatilizing the crude polylactic acid composition so as to produce a purified polylactic acid composition and a composition containing unreacted lactide, d) subjecting the meso-lactide enriched composition and at least a portion of the composition containing unreacted lactide to a purification comprising at least one crystallization step so as to produce a purified meso-lactide enriched composition, e) subjecting the meso-lactide depleted composition or a mixture of the meso-lactide depleted composition and a portion of the composition containing unreacted lactide to a purification comprising at least one crystallization step so as to produce a purified meso-lactide depleted composition, wherein the polymerization composition contains at least a portion of the purified meso-lactide enriched composition produced in step d).

Classes IPC  ?

• C08G 63/08 - Lactones ou lactides
• C08G 63/82 - Procédés de préparation caractérisés par le catalyseur utilisé
• C08G 63/88 - Traitement de post-polymérisation
• C08G 63/90 - Purification; Séchage

Abrégé

A process of producing polylactic acid comprising the steps of: a) providing a crude lactide composition comprising meso-lactide and at least one of L-lactide and D-lactide, b) separating from the crude lactide composition a meso-lactide enriched composition and a meso-lactide depleted composition, wherein the meso-lactide enriched composition contains less than 80 mol-% of meso-lactide based on the total content of lactide, c) polymerizing a polymerization composition comprising meso-lactide and at least one of L-lactide and D-lactide to a crude polylactic acid composition and optionally devolatilizing the crude polylactic acid composition so as to produce a purified polylactic acid composition and a composition containing unreacted lactide, d) subjecting the meso-lactide enriched composition or a mixture of the meso-lactide enriched composition and a portion of the composition containing unreacted lactide to a purification comprising at least one crystallization step so as to produce a purified meso-lactide enriched composition, e) subjecting the meso-lactide depleted composition or a mixture of the meso-lactide depleted composition and a portion of the composition containing unreacted lactide to a purification comprising at least one crystallization step so as to produce a purified meso-lactide depleted composition, wherein the polymerization composition contains at least a portion of the purified meso-lactide enriched composition produced in step d) and/or at least a portion of the purified meso-lactide depleted composition produced in step e).

Classes IPC  ?

• C08G 63/82 - Procédés de préparation caractérisés par le catalyseur utilisé
• C08G 63/88 - Traitement de post-polymérisation
• C08G 63/90 - Purification; Séchage
• C08G 63/08 - Lactones ou lactides

Abrégé

A method for producing n-hexane, which comprises the following steps: a) producing an isomerate stream and preferably a stable isomerate stream in an isomerization unit comprising at least one isomerization reactor, b) feeding the isomerate stream produced in step a) into a dividing-wall distillation column and distilling it, c) removing from the dividing-wall distillation column four separate streams, namely a light isomerate stream, a heavy isomerate stream, a purified n-hexane stream and an isomerate process recycle stream and d) recycling the isomerate process recycle stream to at least one of the at least one isomerization reactor of the isomerization unit.

Classes IPC  ?

• C10G 7/00 - Distillation des huiles d'hydrocarbures
• C10G 45/58 - Raffinage des huiles d'hydrocarbures au moyen d'hydrogène ou de composés donneurs d'hydrogène pour changer la structure du squelette de certains hydrocarbures sans craquer les autres hydrocarbures présents, p.ex. pour abaisser le point d'écoulement; Hydrocraquage sélectif des paraffines normales
• B01D 3/14 - Distillation fractionnée
• C07C 7/04 - Purification, séparation ou stabilisation d'hydrocarbures; Emploi d'additifs par distillation

Abrégé

Invention relates to a multi-stage centrifugal pump comprising an assembly (10) for compensating axial forces in a multi-stage centrifugal liquid pump (100) having an inlet (102) and an outlet (104), comprising a balancing drum (16) arranged to the shaft (14) inside the housing (12), which the balancing drum (16) is a multistage balancing drum, which comprises at least two drum sections (16', 16''), a first pressure chamber (22) between a first side wall of the circumferential axial space (16.3) and a first side wall of the ring element, a second pressure chamber (24) between a second side wall of the circumferential axial space (16.3) and a second side wall of the ring element, a first flow communication path extending from outlet (104) of the pump (100) to the second pressure chamber (24), a second liquid communication path extending from inlet (102) of the pump (100) to the first pressure chamber (22), first annular flow path between the first pressure chamber (22) and the second pressure chamber (24) via the bottom of the circumferential axial space (16.3) and inner surface of the ring element (20), and second annular flow path between the first pressure chamber (22) and the second pressure chamber (24) via the outer surface of the drum section (16',16'',16''') and the inner surface of the housing (12).

Classes IPC  ?

• F04D 29/041 - Equilibrage des poussées axiales
• F04D 29/047 - Paliers hydrodynamiques
• F04D 1/06 - Pompes multiétagées

Abrégé

Disclosed is a device (1) for removing solid particles (4) present in running water (2). The device comprises a separating unit (8) arranged, when in use, in a position of inclination obliquely upwards in a direction of flow (A) of the water, fixed grind bars (9) and movable grid bars (10) and a drive unit (16) connected to the movable grid bars (10) to actuate, move, the movable grid bars (10) to interact with the solid particles (4) and draw the solid particles (4) out of the water (2) ad to carry them upwards along the fixed grid bars (9). The device (1) comprises also a device (10a) for indicating the position of the movable grid bars (10), a device (2a) for identifying the water level at the lowest part of, the inlet of, the device (1) and a device (16a) for handling and controlling the drive unit (16) according to the information from the indicating device (10a) regarding the position of the movable grid bars (10) and information from the identifying device (2a) regarding the water lever. Disclosed is also a method for removing solid particles (4) present in running water (2).

Classes IPC  ?

• E02B 8/02 - Vannes de dégravoiement; Dessableurs; Dispositifs pour arrêter les corps flottants
• B01D 33/80 - Accessoires

Abrégé

A method for fractionating a crude composition comprising at least six fatty acids having each a different chain length into at least four fractions, comprises the following steps: i) feeding the crude composition into a first distillation column and distilling it so as to obtain at least an overhead fraction and a bottom fraction, ii) feeding the bottom fraction of the first distillation column to a second distillation column and distilling it so as to obtain at least an overhead fraction, at least two side fractions and a bottom fraction, iii) feeding the bottom fraction of the second distillation column to a third distillation column and distilling it so as to obtain at least an overhead fraction, at least two side fractions and a bottom fraction and iv) feeding the bottom fraction of the third distillation column to a fourth distillation column and distilling it so as to obtain at least an overhead fraction, a side fraction and a bottom fraction, wherein at least one of the first distillation column, the second distillation column and the third distillation column is a middle dividing-wall column, from which also at least two side fractions are obtained.

Classes IPC  ?

• B01D 3/14 - Distillation fractionnée
• C07C 51/44 - Séparation; Purification; Stabilisation; Emploi d'additifs par changement de l'état physique, p.ex. par cristallisation par distillation
• C07C 53/126 - Acides contenant au moins cinq atomes de carbone
• C07C 57/12 - Acides carboxyliques à chaîne droite contenant dix-huit atomes de carbone
• C11C 1/00 - Préparation des acides gras à partir de graisses, huiles ou cires; Raffinage des acides gras
• C11C 1/10 - Raffinage par distillation

Abrégé

A method for protecting the coalescer elements of an electrostatic coalescer device against electrically induced erosion and/or partial discharges during the operation of the electrostatic coalescer device comprises the following steps: a) providing an electrostatic coalescer device comprising a vessel which contains at least two coalescer elements, wherein each coalescer element comprises an electrode (preferably conductive inner) electrode, which is enclosed by an electrical insulation, b) feeding a water/oil mixture or a gas/water/oil mixture into the vessel, c) supplying AC voltage to the electrodes of the at least two coalescer elements, thereby separating the water/oil mixture into an oil phase and a water phase or separating the gas/water/oil mixture into a gas phase, an oil phase and a water phase, d) time-resolved determining the electrical impedance of the electrode of at least one of the coalescer elements and determining, whether the electrical impedance of the electrode has been changed within a predetermined time period by more than a predetermined threshold and, if so, quenching or reducing the voltage supplied to the electrode to at most 70% of the AC voltage supplied to the electrode at the point of time of determining the change of the electrical impedance of the electrode until the change of the electrical impedance of the electrode lies within a predetermined range and/or until the electrical impedance of the electrode lies within a predetermined range, wherein the length of the predetermined time period in step d) for the change of the electrical impedance is at most 1 second, and wherein the predetermined threshold in step d) for the change of the electrical impedance in the predetermined time period is a change of the electrical impedance of at least 0.25%.

Classes IPC  ?

• B01D 17/06 - Séparation de liquides les uns des autres par l'électricité
• B03C 11/00 - Séparation par des champs électriques à haute tension, non prévue dans les autres groupes de la présente sous-classe
• C10G 33/02 - Déshydratation ou désémulsification des huiles d'hydrocarbures par des moyens électriques ou magnétiques
• B01D 17/12 - Dispositifs auxiliaires spécialement adaptés pour être utilisés avec les appareils pour séparer des liquides, p.ex. circuits de commande
• C10G 33/08 - Commande ou régulation

Abrégé

A process of treating an ammonia and carbon dioxide containing wastewater stream so as to produce a concentrated aqueous ammonia solution containing at least 5% by weight of dissolved ammonia and at most 20% by weight of dissolved carbon dioxide and a purified wastewater stream containing at most 1.000 ppm dissolved ammonia, wherein the process comprises the following steps: a) feeding the wastewater stream into a carbon dioxide degasser column comprising at least one bed of one or more random packings, at least one bed of one or more structured packings or at least one tray, wherein a first portion of the wastewater stream is fed at a position above at least one bed of one or more random packings, at least one bed of one or more structured packings or at least one tray and a second portion of the wastewater stream optionally in admixture with a portion of a liquid carbon dioxide depleted stream being withdrawn as bottom fraction from the carbon dioxide degasser column having a higher temperature than the first portion is fed at a position below at least one bed of one or more random packings, at least one bed of one or more structured packings or at least one tray the carbon dioxide degasser column, wherein the mass flow ratio of the first portion of the wastewater stream to the total wastewater stream fed into the carbon dioxide degasser column is 0.01 to 0.6, b) withdrawing a gaseous carbon dioxide rich stream containing less than 10% by weight of the ammonia contained in the wastewater stream as overhead fraction and the liquid carbon dioxide depleted stream having a pH value of 9.0 or higher as bottom fraction from the carbon dioxide degasser column, c) feeding the liquid carbon dioxide depleted stream into an ammonia stripper column, d) withdrawing a gaseous ammonia rich stream as overhead fraction and the purified wastewater stream containing at most 1.000 ppm dissolved ammonia as bottom fraction from the ammonia stripper column, wherein at least a portion of the liquid purified wastewater stream withdrawn from the ammonia stripper column is evaporated, wherein all or a portion of the evaporated portion is fed back into the ammonia stripper column, e) feeding the gaseous ammonia rich stream and separately therefrom water into a quencher column and withdrawing concentrated aqueous ammonia solution containing at least 5% by weight of dissolved ammonia and at most 20% by weight of dissolved carbon dioxide as bottom fraction from the quencher column.

Classes IPC  ?

• B01D 53/58 - Ammoniac
• C02F 1/20 - Traitement de l'eau, des eaux résiduaires ou des eaux d'égout par dégazage, c. à d. par libération des gaz dissous
• C02F 101/16 - Composés de l'azote, p.ex. ammoniac
• C02F 103/30 - Nature de l'eau, des eaux résiduaires ou des eaux ou boues d'égout à traiter provenant de l'industrie textile
• C02F 11/04 - Traitement anaérobie; Production du méthane par de tels procédés

Abrégé

A process of producing lactide from lactic acid comprises the steps of: a) feeding lactic acid, a hydrocarbon solvent and at least one catalyst into a reactor of a reactor system so as to form a reaction mixture in the reactor, b) reacting the reaction mixture in the so that at least a part of the lactic acid is converted to lactide and water, while distilling at least a part of the reaction mixture so as to remove an azeotrope of water and the hydrocarbon solvent from the reactor, c) separating at least a part of the water from the azeotrope removed from the reactor in step b), d) separating at least a part of the lactide from the reaction mixture, wherein the at least one catalyst comprises a homogeneous catalyst comprising an organometallic compound selected from the group consisting of tin alkoxides, zinc alkoxides, aluminum alkoxides, titanium alkoxides, tin carboxylates, zinc carboxylates, aluminum carboxylates, titanium carboxylates and arbitrary mixtures of two or more of these compounds.

Classes IPC  ?

• C07D 319/12 - Dioxanes-1, 4; Dioxanes-1, 4 hydrogénés non condensés avec d'autres cycles
• B01J 19/00 - Procédés chimiques, physiques ou physico-chimiques en général; Appareils appropriés

Abrégé

Invention relates to a balancing drum assembly (10) in a centrifugal pump (100), wherein a shaft (14) adapted rotatably supported to a housing (12,12'), a balancing drum (16) having a first axial end (16.1) which is in fluid communication with a pressure channel (104) of the centrifugal pump (100), and the balancing drum (16) having a second axial end (16.2) which opposite to the first axial end (16.1), the housing (12,12') forming a space (18) for balancing fluid which space (18) is at least partly bordered by the second axial end (16.2) of the balancing drum (16), an outlet (20) arranged to the housing (12,12') for the balancing fluid, a flow control system (23) arranged between the outlet (20) and the space (18), comprising a first fluid flow control element (24) attached with the housing (12,12') in the space (18) at a side of the second axial end (16.2) of the balancing drum (16), the first fluid flow control element (24) comprising a first flow control surface (24'), which is co-axial with the shaft (14) and the balancing drum (16), and a second fluid flow control element (26) comprising a second flow control surface (26') arranged co-axial with the shaft (14) and the balancing drum (16), attached to a rotatable part of the balancing drum assembly (10), wherein the first flow control surface (24') and the second flow control surface (26') form an adaptive fluid constriction for the balancing fluid discharged to the outlet (20).

Classes IPC  ?

• F04D 1/06 - Pompes multiétagées
• F04D 29/041 - Equilibrage des poussées axiales

Abrégé

Invention relates to an assembly (10) for compensating axial forces in a rotating flow machine (100) comprising - a housing (18), - a shaft (14) arranged rotatably to the housing (18), - a rotationally symmetrical balancing part (20) arranged to and coaxially with the shaft (14) in the housing (18), - the balancing part (20) having a first axial end (20.1) and a second axial end (20.2), - a first mechanical slide ring sealing (12.1) arranged between the balancing part (20) and the housing (18) at the first axial end (20.1), - a second mechanical slide ring sealing (12.2) arranged between the balancing part (20) and the housing (18) at the second axial end (12.2), - the first and the second mechanical slide ring sealings (12.1,12.2) are arranged so as to seal an intermediate space (26), extending axially between the mechan- ical slide ring sealings (12.1,12.2), the intermediate space (26) being bordered by the slide ring sealings (12.1,12.2), the balancing part (20) and the housing (18), and - a first fluid communication port (28) opening into the intermediate space (26), - the first fluid communication port (26) being connected to a source of pressur- ized barrier fluid (29). Invention relates also to a multi-stage centrifugal pump comprising such an assembly.

Classes IPC  ?

• F04D 1/06 - Pompes multiétagées
• F04D 17/12 - Pompes multiétagées
• F04D 29/041 - Equilibrage des poussées axiales
• F04D 29/12 - Joints d'étanchéité pour arbre utilisant des bagues

Abrégé

A vertical pump for conveying a process fluid is proposed, comprising a pump housing (2) with a pump inlet (21) and a pump outlet (22), a rotor (3) arranged in the pump housing (2) and configured for rotating about an axial direction (A), and at least one first radial bearing (11) for supporting the rotor (3) with respect to a radial direction perpendicular to the axial direction (A), wherein the rotor (3) comprises a pump shaft (5) extending in the direction of gravity during operation of the pump, and at least one impeller (31, 32, 33) fixedly mounted on the pump shaft (5) for conveying the process fluid from the pump inlet (21) to the pump outlet (22), and wherein the first radial bearing (11) is configured as a tilting pad journal bearing comprising a first support carrier (12) and a plurality of first pads (13) arranged on the first support carrier (12) for supporting the pump shaft (5) by means of a lubricant. Each first radial bearing (11) comprises at least one spring element (14) which is arranged to act in a load direction (L) on the first support carrier (12) or on one of the first pads (13, 13a) for placing the pump shaft (5) relative to the first radial bearing (11) into a preferred position, in which the lubricant is squeezed between at least one of the first pads (13) and the pump shaft (5).

Classes IPC  ?

• F04D 29/047 - Paliers hydrodynamiques
• F16C 17/03 - Paliers à contact lisse pour mouvement de rotation exclusivement pour charges radiales uniquement avec segments supportés obliquement, p.ex. paliers Michell
• F16C 39/02 - Allégement de la charge appliquée aux paliers par moyens mécaniques
• F04D 13/08 - Ensembles comprenant les pompes et leurs moyens d'entraînement la pompe étant entraînée par l'électricité pour utilisation en position immergée
• F04D 31/00 - Pompage simultané de liquides et de fluides compressibles
• F16C 27/02 - Paliers à contact lisse

Abrégé

A vertical pump for conveying a process fluid is proposed, comprising a pump housing (2) with a pump inlet (21) and a pump outlet (22), a rotor (3) arranged in the pump housing (2) and configured for rotating about an axial direction (A), and at least one first radial bearing (11) for supporting the rotor (3) with respect to a radial direction perpendicular to the axial direction (A), wherein the rotor (3) comprises a pump shaft (5) extending in the direction of gravity during operation of the pump, and at least one impeller (31, 32, 33) fixedly mounted on the pump shaft (5) for conveying the process fluid from the pump inlet (21) to the pump outlet (22), and wherein the first radial bearing (11) is configured as a tilting pad journal bearing comprising a first support carrier (12) and a plurality of pads (13) arranged on the first support carrier (12) for supporting the pump shaft (5) by means of a lubricant, wherein the plurality of pads (13) define a bearing clearance (136), in which the pump shaft (5) can move with respect to the radial direction. The plurality of pads (13) is configured such that the bearing clearance (136) has a first maximum extension (E1) in a first direction (x) perpendicular to the axial direction (A), and a second maximum extension (E2) in a second direction (y) perpendicular to the axial direction (A), wherein the second direction (y) is different from the first direction (x), and wherein the first maximum extension (E1) is different from the second maximum extension (E2).

Classes IPC  ?

• F04D 13/06 - Ensembles comprenant les pompes et leurs moyens d'entraînement la pompe étant entraînée par l'électricité
• F04D 13/08 - Ensembles comprenant les pompes et leurs moyens d'entraînement la pompe étant entraînée par l'électricité pour utilisation en position immergée
• F04D 29/047 - Paliers hydrodynamiques
• F04D 31/00 - Pompage simultané de liquides et de fluides compressibles
• F16C 1/00 - Arbres flexibles; Moyens mécaniques pour transmettre un mouvement dans une gaine flexible
• F16C 17/03 - Paliers à contact lisse pour mouvement de rotation exclusivement pour charges radiales uniquement avec segments supportés obliquement, p.ex. paliers Michell
• F16C 39/02 - Allégement de la charge appliquée aux paliers par moyens mécaniques

Abrégé

A process of continuously manufacturing a poly(hydroxy acid) copolymer comprising copolymerizing at least two different monomers, wherein at least one monomer is a cyclic ester of hydroxy acid, in the presence of a catalyst in a reactor system, wherein the molar ratio of the two different monomers to the catalyst applied is more than 10,000, wherein the reactor system comprises in series at least two polymerization reactors, wherein at least one is a continuous stirred-tank reactor, a loop reactor or a plug flow reactor, wherein at least one of these reactors comprises at least one mixer and/or at least one heat transfer element, wherein the reactor system comprises in series at least two different feeding points for the monomer composition, wherein the monomer composition fed to the reactor system through one feeding point is different from the one fed through at least one other feeding point.

Classes IPC  ?

• C08G 63/08 - Lactones ou lactides
• C08G 63/78 - Procédés de préparation
• C08G 63/82 - Procédés de préparation caractérisés par le catalyseur utilisé

Abrégé

Invention relates to a multistage centrifugal pump (10) for pumping fluid, the pump (10) comprising: - a pump housing (11) having a fluid inlet (12) and a fluid outlet (13) and a flow channel (110) between the inlet (12) and the outlet (13) in the housing, the pump housing (11) is comprising a number of pumping stages, - a shaft (14) mounted by bearings (15) for rotation about its center axis (A-A), - a number of impellers (18), comprising a hub (181) having an axial opening (180) configured to be fitted on the shaft (14), - when in use, power is transmitted though the rotating shaft 14 to the impellers (18), causing torque, radial forces and axial forces, - over the length of the shaft (14) where the impellers (18) are configured to be assembled, the shaft (14) has a diameter that is smaller than the inner diameter of the hub (181) and an adaptor ring (16) is arranged into the axial opening (180) of the hub (181) to transmit the radial forces between the impeller (18) and the shaft (14). The invention relates also to a corresponding impeller shaft assembly and a method for manufacturing such.

Classes IPC  ?

• F04D 29/62 - Montage; Assemblage; Démontage des pompes radiales ou hélicocentrifuges
• F04D 1/06 - Pompes multiétagées
• F04D 29/20 - Montage des rotors sur les arbres

Abrégé

The invention relates to a centrifugal pump (10) for pumping a multiphase suspension containing liquid, solid material and gas, the pump comprising: - a pump housing (11) having a suspension inlet (12) and a suspension outlet (13) and a flow channel (110) between the inlet (12) and the outlet (13), - a shaft (14) mounted by bearings for rotation about its center axis (A-A), - an impeller (18) which is rotatable by the shaft (14), in alignment with the inlet (12) and arranged to be rotated about the axis (A-A) in the flow channel (110), - gas collecting openings (20) for gas removal arranged in the flow channel (110), - the inlet end (120) of the flow channel (110) is provided with a number of static vanes (2) comprising gas collecting openings (20), the vanes (2) are extending radially from an inner wall (111) of the flow channel (110) toward the center of the flow channel (110), the vanes (2) are located upstream of the impeller (18). The invention relates also to a corresponding gas removal device.

Classes IPC  ?

• F04D 7/04 - Pompes adaptées à la manipulation de liquides particuliers, p.ex. par choix de matériaux spéciaux pour les pompes ou pièces de pompe du type centrifuge les fluides étant visqueux ou non homogènes
• F04D 9/00 - Amorçage; Prévention du blocage par la vapeur
• F04D 29/44 - Moyens de guidage du fluide, p.ex. diffuseurs
• F04D 29/42 - Carters d'enveloppe; Tubulures pour le fluide énergétique pour pompes radiales ou hélicocentrifuges
• F04D 31/00 - Pompage simultané de liquides et de fluides compressibles

Abrégé

A liquid distributor for a separation device, such as for a mass transfer column in particular for a packing column for absorption, stripping, scrubbing or distillation, or for reactor, such as for distributing liquid above a catalyst bed of a reactor, comprises at least one pre-distributor member and a plurality of distributor members, wherein the at least one pre-distributor member is positioned above the plurality of distributor members, wherein the at least one pre-distributor member comprises at least two troughs, which each comprise a plurality of discharge openings, wherein each two of the at least two troughs are connected with each other, wherein a first of the at least two troughs has an overflow means and at least one deflector attached to the overflow means or the side wall of the first of the at least two troughs, wherein a second of the at least two troughs has an upper edge, wherein at least one deflector attached to the overflow means or the side wall of the first trough extends from above the upper edge of the second trough to the second trough so that liquid flows from the first trough over the overflow means and the at least one deflector into the second trough, if the liquid level in the first trough reaches the overflow means.

Classes IPC  ?

• B01D 3/00 - Distillation ou procédés d'échange apparentés dans lesquels des liquides sont en contact avec des milieux gazeux, p.ex. extraction

Abrégé

The present invention relates to a method for preparing a purified styrene composition, wherein the method comprises the following steps: a) providing a crude hydrocarbon composition containing styrene, b) subjecting the crude hydrocarbon composition provided in step a) to a distillation in a divided-wall column so as to produce an overhead hydrocarbon stream, a bottom hydrocarbon stream and a side hydrocarbon stream and c) subjecting the side hydrocarbon stream obtained in step b) to at least one crystallization step so as to obtain a purified styrene composition.

Classes IPC  ?

• C07C 7/04 - Purification, séparation ou stabilisation d'hydrocarbures; Emploi d'additifs par distillation
• C07C 7/14 - Purification, séparation ou stabilisation d'hydrocarbures; Emploi d'additifs par cristallisation; Purification ou séparation des cristaux
• B01D 3/14 - Distillation fractionnée
• B01D 9/00 - Cristallisation
• C10G 67/02 - Traitement des huiles d'hydrocarbures, uniquement par au moins un procédé d'hydrotraitement et au moins un procédé de raffinage en l'absence d'hydrogène uniquement par plusieurs étapes en série
• C07C 15/46 - Styrène; Styrènes alkylés sur le cycle

Abrégé

The present invention relates to a process for preparing a purified benzene composition from a crude hydrocarbon stream containing at least 10% by volume of benzene comprising the following steps: a) subjecting the crude hydrocarbon stream and the further benzene containing stream recycled in step d) to a solvent based extraction so as to produce a benzene enriched aromatic stream and a benzene depleted non-aromatic stream, b) subjecting the benzene enriched aromatic stream obtained in step a) to a hydrodesulfurization so as to obtain a desulfurized aromatic stream, c) subjecting the desulfurized aromatic stream obtained in step b) to a distillation so as to produce a purified benzene stream and a further benzene containing stream having a benzene concentration of between less than 100% by weight and the azeotropic benzene concentration, and d) at least partially recycling the further benzene containing stream obtained in step c) to step a).

Classes IPC  ?

• C10G 21/12 - Composés organiques uniquement
• C10G 21/16 - Composés organiques uniquement contenant de l'oxygène
• C10G 21/27 - Composés organiques non prévus par l'un des groupes
• C10G 67/04 - Traitement des huiles d'hydrocarbures, uniquement par au moins un procédé d'hydrotraitement et au moins un procédé de raffinage en l'absence d'hydrogène uniquement par plusieurs étapes en série comprenant une extraction par solvant comme étape de raffinage en l'absence d'hydrogène

Abrégé

The invention relates to an apparatus for supplying and dissipating heat, for carrying out reactions and for mixing and dispersing flowing media in a housing (1) with an internal diameter (D) for a medium (I) and comprising internal fittings made up of a bundle of tubes (2) with an external diameter (d) or made up of other elongate elements oriented preferably parallel to the longitudinal axis of the housing and with crosspieces or crosspiece layers (31, 41) installed in a crosswise state between the elongate elements, wherein the crosspieces are inclined in relation to the longitudinal axis of the housing and are not in contact with one another. Following a number of axially successive crosspieces, or following a length (L), the crosspieces are installed between the tubes in a state in which they have been turned by preferably 90°. A heat-transfer medium (II) can flow in a co-current or counter-current mode in the tubes, and this results in a mixer/heat exchanger or reactor with an extremely large heat-transfer capacity and almost plug flow.

Classes IPC  ?

• F28F 9/013 - Supports auxiliaires pour les éléments pour les tubes ou les assemblages de tubes

Abrégé

The present invention relates to a structured packing bed for a column for mass transfer and/or heat exchange between a first and a second fluid phase, wherein the column for mass transfer and/or heat exchange is designed for being operated at a pressure of at least 6 bar, wherein the structured packing bed comprises at least two layers, wherein the at least two layers are stacked vertically above each other, and wherein at least two of the at least two layers comprise each at least one structured cross-channel packing element having a specific surface area of 60 to 500 m2/m3 and a height of 50 to less than 150 mm, wherein at least 50% of all structured cross-channel packing elements are blocks, wherein each block comprises a plurality of sheets with periodic deformations, wherein the sheets are arranged in the longitudinal direction parallel and in touching contact with each other so that an open space extending from one end to the opposite end of the sheets is provided between them, wherein the open space is defined by the periodic deformations, wherein adjacent sheets are oriented such that the periodic deformations of the adjacent sheets intersect in crisscross fashion with each other, and wherein at least one of the structured cross-channel packing element(s) of a layer is rotated with regard to at least one of the structured cross-channel packing element(s) of an adjacent layer by 70 to 110°.

Classes IPC  ?

• B01D 3/16 - Colonnes de fractionnement dans lesquelles la vapeur barbote à travers le liquide
• B01J 19/30 - Eléments de remplissage non agglomérés ou en forme, p.ex. anneaux de Raschig ou éléments de Berl en forme de selle, destinés à être versés dans l'appareil de transfert de chaleur ou de matière
• B01J 19/32 - Eléments de remplissage en forme de grille ou d'éléments composés de plusieurs pièces pour constituer une unité ou un module dans l'appareil de transfert de chaleur ou de matière

Abrégé

A dividing wall column system comprises: - a dividing wall column comprising a dividing wall positioned in the bottom section of the dividing wall column to divide the bottom section of the dividing wall column into a first side and a second side; - a first reboiler outside of the dividing wall column and in fluid communication with the first side of the bottom section of the dividing wall column; - a second reboiler outside of the dividing wall column and in fluid communication with the second side of the bottom section of the dividing wall column; and - a heat pump in fluid communication with the dividing wall column and the second reboiler and configured to compress a first portion of the overhead product from the dividing wall column.

Classes IPC  ?

• C10G 7/00 - Distillation des huiles d'hydrocarbures
• B01D 3/14 - Distillation fractionnée
• C07C 7/04 - Purification, séparation ou stabilisation d'hydrocarbures; Emploi d'additifs par distillation

Abrégé

The present invention relates to a method for preparing a purified styrene composition with a styrene yield of at least 80%, wherein the method comprises providing a crude composition containing styrene and subjecting the crude composition to at least one crystallization step, wherein the at least one crystallization step comprises at least one static crystallization stage and at least one dynamic crystallization stage.

Classes IPC  ?

• C07C 15/46 - Styrène; Styrènes alkylés sur le cycle
• B01J 3/00 - Procédés utilisant une pression supérieure ou inférieure à la pression atmosphérique pour obtenir des modifications chimiques ou physiques de la matière; Appareils à cet effet
• C07C 7/14 - Purification, séparation ou stabilisation d'hydrocarbures; Emploi d'additifs par cristallisation; Purification ou séparation des cristaux
• B01D 9/00 - Cristallisation
• C07C 7/00 - Purification, séparation ou stabilisation d'hydrocarbures; Emploi d'additifs

Abrégé

The present invention relates to a method for preparing a purified styrene composition, wherein the method comprises providing a crude composition containing 70% by weight or more styrene based on the total weight of the crude composition and subjecting the crude composition to at least one crystallization step, wherein the at least one crystallization step comprises at least one of a static crystallization stage and a dynamic crystallization stage, and wherein the crude composition contains one or more impurities selected from the group consisting color inducing species, oxygenates, sulfur species, alpha-methylstyrene and arbitrary combinations of two or more thereof.

Classes IPC  ?

• C07C 15/46 - Styrène; Styrènes alkylés sur le cycle
• B01J 3/00 - Procédés utilisant une pression supérieure ou inférieure à la pression atmosphérique pour obtenir des modifications chimiques ou physiques de la matière; Appareils à cet effet
• C07C 7/14 - Purification, séparation ou stabilisation d'hydrocarbures; Emploi d'additifs par cristallisation; Purification ou séparation des cristaux
• B01D 9/00 - Cristallisation
• C07C 7/00 - Purification, séparation ou stabilisation d'hydrocarbures; Emploi d'additifs

Abrégé

The present disclosure relates in its first aspect to a process of converting a stream comprising methane into chemicals, said process being remarkable in that it comprises the steps of providing a first stream (1, 5, 11) comprising methane, providing a second stream (79) which is a bromine-rich stream, putting into contact said first stream (15) with said second stream (79) to obtain a third stream (21) comprising at least unreacted methane, methyl bromide, dibromomethane, and hydrogen bromide and removing said dibromomethane from said third stream (21), to produce a dibromomethane stream (103) and a fourth stream (27) comprising unreacted methane, methyl bromide and hydrogen bromide; wherein the fourth stream (27) is converted into chemicals. In its second aspect, the present disclosure concerns an installation for carrying out the process of the first aspect.

Classes IPC  ?

• C07C 17/10 - Préparation d'hydrocarbures halogénés par remplacement par des halogènes d'atomes d'hydrogène
• C07C 17/383 - Séparation; Purification; Stabilisation; Emploi d'additifs par distillation
• C07C 19/075 - Composés acycliques saturés contenant des atomes d'halogène contenant du brome
• C07C 1/26 - Préparation d'hydrocarbures à partir d'un ou plusieurs composés, aucun d'eux n'étant un hydrocarbure à partir de composés organiques ne renfermant que des atomes d'halogènes en tant qu'hétéro-atomes
• C07C 4/06 - Procédés catalytiques
• C07C 11/04 - Ethylène
• C07C 11/06 - Propène
• C07C 11/10 - Alcènes à cinq atomes de carbone
• C01B 7/09 - Brome; Acide bromhydrique
• C01B 32/05 - Préparation ou purification du carbone non couvertes par les groupes , , ,
• C09C 1/46 - Graphite
• C09C 1/48 - Noir de carbone
• C25B 1/24 - Halogènes ou leurs composés

Abrégé

The present disclosure relates in its first aspect to a process for converting a stream comprising methane into chemicals, said process is remarkable in that it comprises the steps of providing a first stream (1, 5, 11) comprising methane, providing a second stream (79) which is a bromine-rich stream, putting into contact said first stream (15) with said second stream (79) to obtain a third stream (21) comprising at least unreacted methane, methyl bromide, dibromomethane, and hydrogen bromide, removing said dibromomethane from said third stream (21), to produce a dibromomethane stream (103) and a fourth stream (27) comprising unreacted methane, methyl bromide and hydrogen bromide which is converted into chemicals, and separating hydrogen bromide said fourth stream (27), to provide a hydrogen bromide-rich stream. In its second aspect, the present disclosure concerns an installation for carrying out the process of the first aspect.

Classes IPC  ?

• C07C 17/10 - Préparation d'hydrocarbures halogénés par remplacement par des halogènes d'atomes d'hydrogène
• C07C 17/383 - Séparation; Purification; Stabilisation; Emploi d'additifs par distillation
• C07C 19/075 - Composés acycliques saturés contenant des atomes d'halogène contenant du brome
• C07C 1/26 - Préparation d'hydrocarbures à partir d'un ou plusieurs composés, aucun d'eux n'étant un hydrocarbure à partir de composés organiques ne renfermant que des atomes d'halogènes en tant qu'hétéro-atomes
• C07C 4/06 - Procédés catalytiques
• C07C 7/08 - Purification, séparation ou stabilisation d'hydrocarbures; Emploi d'additifs par distillation à l'aide de composés auxiliaires extractive
• C07C 11/04 - Ethylène
• C07C 11/06 - Propène
• C07C 11/10 - Alcènes à cinq atomes de carbone
• C10G 50/00 - Production de mélanges d'hydrocarbures liquides à partir d'hydrocarbures à nombre inférieur d'atomes de carbone, p.ex. par oligomérisation
• C01B 7/09 - Brome; Acide bromhydrique
• C01B 32/00 - Carbone; Ses composés
• C09C 1/46 - Graphite
• C09C 1/48 - Noir de carbone
• C25B 1/04 - Hydrogène ou oxygène par électrolyse de l'eau

Abrégé

The disclosure relates in its first aspect to a process of conversion of a gaseous stream comprising methane into hydrogen (51) and carbon (25), the process is remarkable in that it comprises a step (a) of providing a first gaseous stream (3, 7); a step (b) of bromination and synthesis in which the first gaseous stream (3, 7) is put in contact with a second stream (53) comprising bromine resulting in the formation of a third stream (15) comprising methyl bromides and hydrogen bromide, and of a fourth stream (25) comprising carbon including graphite and/or carbon black; a step (c) of separation performed on the third stream (15) to recover a hydrogen bromide-rich stream (41) which is then oxidized in a step (d) to produce a stream (51) comprising hydrogen. The second aspect relates to the installation for performing the process of the first aspect and the third aspect concerns the use of bromine in such process.

Classes IPC  ?

• C07C 17/10 - Préparation d'hydrocarbures halogénés par remplacement par des halogènes d'atomes d'hydrogène
• C07C 19/075 - Composés acycliques saturés contenant des atomes d'halogène contenant du brome
• C01B 32/05 - Préparation ou purification du carbone non couvertes par les groupes , , ,
• C09C 1/46 - Graphite
• C09C 1/48 - Noir de carbone
• C01B 7/09 - Brome; Acide bromhydrique
• C25B 1/24 - Halogènes ou leurs composés

Abrégé

The present disclosure relates in its first aspect to a process of conversion of a stream comprising methane into chemicals, said process being remarkable in that it comprises the steps of providing a first stream (1, 5, 11, 15) comprising methane, providing a second stream (69) which is a hydrogen bromide-rich stream, putting into contact said first stream (15) with said second stream (69) under electrolytic bromination conditions to obtain a hydrogen stream (75) and a third stream (21) comprising at least unreacted methane, unreacted hydrogen bromide, methyl bromide and dibromomethane, and removing said dibromomethane from said third stream (21), to produce a dibromomethane stream (103) and a fourth stream (27) comprising unreacted methane, methyl bromide and unreacted hydrogen bromide; wherein the fourth stream (27) is converted into chemicals. In its second aspect, the present disclosure concerns an installation for carrying out the process of the first aspect.

Classes IPC  ?

• C07C 2/80 - Procédés faisant intervenir des moyens électriques
• C07C 11/04 - Ethylène
• C07C 11/06 - Propène
• C07C 17/10 - Préparation d'hydrocarbures halogénés par remplacement par des halogènes d'atomes d'hydrogène
• C07C 19/075 - Composés acycliques saturés contenant des atomes d'halogène contenant du brome
• C07C 1/26 - Préparation d'hydrocarbures à partir d'un ou plusieurs composés, aucun d'eux n'étant un hydrocarbure à partir de composés organiques ne renfermant que des atomes d'halogènes en tant qu'hétéro-atomes
• C10G 57/02 - Traitement des huiles d'hydrocarbures, en l'absence d'hydrogène, par au moins un procédé de craquage ou de raffinage et au moins un autre procédé de conversion avec polymérisation
• C25B 3/00 - Production électrolytique de composés organiques

Abrégé

A process for treating waste fluid generated during a petrochemical process, wherein the waste fluid comprises at least one first water-based wastewater stream and at least one second organic fluid-based waste fluid stream, wherein the process comprises the following steps: a) subjecting the at least one first water-based wastewater stream to at least one freeze concentration stage so as to produce a third clean water stream and a fourth concentrated water-based wastewater stream, b) subjecting the at least one second organic fluid-based waste fluid stream to at least one separation stage so as to produce a fifth purified product stream and a sixth concentrated organic fluid-based waste fluid stream, c) forwarding the fourth concentrated water-based wastewater stream and the sixth concentrated organic fluid-based waste fluid stream to an incinerator and incinerating the streams in the incinerator, wherein the process is controlled so that the incineration of the sixth concentrated organic fluid-based waste fluid stream generates at least 70% of the energy necessary to incinerate the fourth concentrated water-based wastewater stream.

Classes IPC  ?

• C02F 9/00 - Traitement en plusieurs étapes de l'eau, des eaux résiduaires ou des eaux d'égout
• C02F 1/04 - Traitement de l'eau, des eaux résiduaires ou des eaux d'égout par chauffage par distillation ou évaporation
• C02F 1/22 - Traitement de l'eau, des eaux résiduaires ou des eaux d'égout par congélation
• C02F 1/26 - Traitement de l'eau, des eaux résiduaires ou des eaux d'égout par extraction
• C02F 1/72 - Traitement de l'eau, des eaux résiduaires ou des eaux d'égout par oxydation
• C02F 11/06 - Traitement des boues d'égout; Dispositifs à cet effet par oxydation
• C02F 103/36 - Nature de l'eau, des eaux résiduaires ou des eaux ou boues d'égout à traiter provenant de l'industrie chimique non prévue dans les groupes provenant de la fabrication de composés organiques

Abrégé

The present disclosure concerns a process for converting alkyl halides to ethylene and propylene, said process comprising the steps of (a) providing a feedstream comprising alkyl halides; (b) providing a first and second catalyst composition, said second catalyst composition comprising a cracking catalyst; (c) contacting said feedstream with said first catalyst composition in a first reaction zone under first reaction conditions to provide a first product stream, and (d) subjecting at least a part of said first product stream to an Olefin Catalytic Cracking with said second catalyst composition in a second reaction zone under second reaction conditions to provide a second product steam. The process is remarkable in that it further comprises a step of steaming said first catalyst composition before the step (c) and in that said first catalyst composition comprises zeolites and a binder, wherein said zeolites comprise at least one 10-membered ring channel.

Classes IPC  ?

• C01B 39/02 - Zéolites aluminosilicates cristallines; Leurs composés isomorphes; Leur préparation directe; Leur préparation à partir d'un mélange réactionnel contenant une zéolite cristalline d'un autre type, ou à partir de réactants préformés; Leur post-traitement
• C01B 39/38 - Type ZSM-5
• C07C 1/26 - Préparation d'hydrocarbures à partir d'un ou plusieurs composés, aucun d'eux n'étant un hydrocarbure à partir de composés organiques ne renfermant que des atomes d'halogènes en tant qu'hétéro-atomes
• C07C 1/30 - Préparation d'hydrocarbures à partir d'un ou plusieurs composés, aucun d'eux n'étant un hydrocarbure à partir de composés organiques ne renfermant que des atomes d'halogènes en tant qu'hétéro-atomes par départ des éléments d'un acide halogéné à partir d'une seule molécule
• C07C 11/04 - Ethylène
• C07C 11/06 - Propène
• B01J 29/035 - Polymorphes de silice cristallins, p.ex. silicalites

Abrégé

The present disclosure concerns a process for converting methyl halides to ethylene and propylene, said process comprising the steps of (a) providing a feedstream comprising methyl halides; (b) providing a first and second catalyst composition, said second catalyst composition comprising a cracking catalyst; (c) contacting said feedstream with said first catalyst composition in a first reaction zone under first reaction conditions to provide a first product stream; and (d) subjecting at least a part of said first product stream to an Olefin Catalytic Cracking with said second catalyst composition in a second reaction zone under second reaction conditions to provide a second product steam. The process is remarkable in that said step (c) is performed under 400°C, and in that said first catalyst composition comprises molecular sieves with a Si/Al atomic between 2 and 18 and with a plurality of pores with a shape of an 8-membered ring or less.

Classes IPC  ?

• C07C 1/20 - Préparation d'hydrocarbures à partir d'un ou plusieurs composés, aucun d'eux n'étant un hydrocarbure à partir de composés organiques ne renfermant que des atomes d'oxygène en tant qu'hétéro-atomes
• C07C 4/06 - Procédés catalytiques
• C07C 11/04 - Ethylène
• C07C 11/06 - Propène

Abrégé

The present disclosure relates to a process for converting alkyl halides to C3-C5 α-olefins, said process comprising the steps of (a) providing a feedstream comprising alkyl halides; (b) providing a first and second catalyst composition, said second catalyst composition comprising a metathesis catalyst; (c) contacting said feedstream with said first catalyst composition in a first reaction zone under first reaction conditions to provide a first product stream, and (d) contacting said first product stream with an olefin stream and with said second catalyst composition in a second reaction zone under second reaction conditions to provide a second product steam. The process is remarkable in that said it comprises a step of steaming said first catalyst composition before the step (c) and in that said first catalyst composition comprises zeolites and a binder, wherein said zeolites comprise at least one 10-membered ring channel.

Classes IPC  ?

• C07C 11/02 - Alcènes
• C07C 1/26 - Préparation d'hydrocarbures à partir d'un ou plusieurs composés, aucun d'eux n'étant un hydrocarbure à partir de composés organiques ne renfermant que des atomes d'halogènes en tant qu'hétéro-atomes
• C07C 11/06 - Propène
• C07C 11/08 - Alcènes à quatre atomes de carbone
• C07C 11/10 - Alcènes à cinq atomes de carbone
• C07C 11/107 - Alcènes à six atomes de carbone
• B01J 29/035 - Polymorphes de silice cristallins, p.ex. silicalites

Abrégé

The present disclosure relates to a process for converting one or more alkyl halides to acyclic C3-C6 olefins, said process comprising the steps of (a) providing a feedstream comprising one or more alkyl halides; (b) providing a catalyst composition; and (c) contacting said feedstream with said catalyst composition under reaction conditions. The process is remarkable in that said process further comprises a step of steaming said catalyst composition before the step (c) and in that said catalyst composition comprises one or more zeolites and a binder, wherein said one or more zeolites comprise at least one 10-membered ring channel. The present disclosure further relates to the use of a catalyst composition in said process, said catalyst composition comprising one or more zeolites and a binder, wherein said catalyst composition is steamed before use.

Classes IPC  ?

• C07C 1/26 - Préparation d'hydrocarbures à partir d'un ou plusieurs composés, aucun d'eux n'étant un hydrocarbure à partir de composés organiques ne renfermant que des atomes d'halogènes en tant qu'hétéro-atomes
• C07C 11/06 - Propène
• C07C 11/08 - Alcènes à quatre atomes de carbone
• C07C 11/10 - Alcènes à cinq atomes de carbone
• C07C 11/107 - Alcènes à six atomes de carbone
• B01J 29/40 - Zéolites aluminosilicates cristallines; Leurs composés isomorphes du type pentasil, p.ex. types ZSM-5, ZSM-8 ou ZSM-11
• B01J 35/00 - Catalyseurs caractérisés par leur forme ou leurs propriétés physiques, en général
• B01J 37/28 - Phosphoration
• B01J 21/10 - Magnésium; Ses oxydes ou hydroxydes

Abrégé

The present disclosure relates to a process for converting one or more methyl halides to acyclic C3-C6 olefins, said process comprising the steps of (a) providing a feedstream comprising one or more methyl halides; (b) providing a catalyst composition; and (c) contacting said feedstream with said catalyst composition under reaction conditions. The process is remarkable in that said reaction conditions include a reaction temperature below 400°C, and in that said catalyst composition comprises one or more molecular sieves with a Si/Al atomic ratio ranging from 2 to 18 and wherein said one or more molecular sieves comprise a plurality of pores, wherein said pores have a shape of an 8-membered ring or less.

Classes IPC  ?

• C07C 1/26 - Préparation d'hydrocarbures à partir d'un ou plusieurs composés, aucun d'eux n'étant un hydrocarbure à partir de composés organiques ne renfermant que des atomes d'halogènes en tant qu'hétéro-atomes
• C07C 1/30 - Préparation d'hydrocarbures à partir d'un ou plusieurs composés, aucun d'eux n'étant un hydrocarbure à partir de composés organiques ne renfermant que des atomes d'halogènes en tant qu'hétéro-atomes par départ des éléments d'un acide halogéné à partir d'une seule molécule
• C07C 11/06 - Propène
• C07C 11/08 - Alcènes à quatre atomes de carbone
• C07C 11/10 - Alcènes à cinq atomes de carbone
• C07C 11/107 - Alcènes à six atomes de carbone

Abrégé

The present disclosure relates to a process for converting methyl halides to C3-C5 α-olefins, said process comprising the steps of (a) providing a feedstream comprising methyl halides; (b) providing a first and second catalyst composition, said second catalyst composition comprising a metathesis catalyst; (c) contacting said feedstream with said first catalyst composition in a first reaction zone under first reaction conditions to provide a first product stream, and (d) contacting said first product stream with an olefin stream and with said second catalyst composition in a second reaction zone under second reaction conditions to provide a second product steam. The process is remarkable in that said step (c) is performed under 400°C, and in that said first catalyst composition comprises molecular sieves with a Si/Al atomic ratio between 2 and 18 and with a plurality of pores with a shape of an 8-membered ring or less.

Classes IPC  ?

• C07C 1/26 - Préparation d'hydrocarbures à partir d'un ou plusieurs composés, aucun d'eux n'étant un hydrocarbure à partir de composés organiques ne renfermant que des atomes d'halogènes en tant qu'hétéro-atomes
• C07C 6/04 - Réactions de métathèse sur une liaison carbone-carbone non saturée sur une double liaison carbone-carbone
• C07C 11/02 - Alcènes
• B01J 29/08 - Zéolites aluminosilicates cristallines; Leurs composés isomorphes du type faujasite, p.ex. du type X ou Y

Abrégé

Invention relates to a pump arrangement (100) for pumping barrier liquid in a sealed space (102) of a mechanical shaft seal, comprising a housing (110, 24) assemblable in connection with a rotatable shaft (8) of a device to be sealed by the mechanical shaft seal. The housing (100,24) is provided with a pumping means (104), which is configured to be in force transmission connection with the rotatable shaft (8) for providing power to operate the pumping means (104) when in use.

Classes IPC  ?

• F04D 29/12 - Joints d'étanchéité pour arbre utilisant des bagues
• F16J 15/34 - Joints d'étanchéité entre deux surfaces mobiles l'une par rapport à l'autre par bague glissante pressée contre la face plus ou moins radiale d'une des deux parties

Abrégé

The present invention relates to a structured packing element for a column for mass transfer and/or heat exchange between a heavy and a light fluid phase, wherein the structured packing element comprises at least two layers of a grid comprising openings, which are surrounded and separated from each other by separating elements, wherein at least two of the at least two layers are arranged in the longitudinal direction parallel and in touching contact with each other so that an open space extending from one end to the opposite end of the at least two layers is provided between them so that at least one of the heavy and the light fluid phase may flow through it, wherein the average width of at least 50% of the separating elements between adjacent openings is at least 15 times the layer material thickness and is between 70% and 125% of the average hydraulic diameter of the adjacent openings, and wherein the maximum distance between at least two of the at least two layers measured in the plane being perpendicular of the longitudinal direction is at least 4 times larger than the average width of the separating elements.

Classes IPC  ?

• B01J 19/32 - Eléments de remplissage en forme de grille ou d'éléments composés de plusieurs pièces pour constituer une unité ou un module dans l'appareil de transfert de chaleur ou de matière

Abrégé

The present invention relates to a plant for producing a structured cross-channel packing element for a column for mass transfer and/or heat exchange between a heavy and a light fluid phase, wherein the structured cross-channel packing element comprises at least two adjacent layers made of expanded metal sheets each comprising openings, which are surrounded and separated from each other by separating elements, and comprising periodic deformations, wherein at least two of the at least two layers are arranged in the longitudinal direction of the packing element parallel and in touching contact with each other so that an open space extending from one end to the opposite end of the at least two layers is provided between them so that at least one of the heavy and the light fluid phase may flow through it, wherein the plant comprises: a) a stretching machine for cutting and stretching a metal sheet to an expanded metal sheet, b) optionally, a calibration machine for rolling the expanded metal sheet produced in the stretching machine (a) to a desired thickness, c) a sheet storage unit, d) a forming machine for forming the expanded metal sheet produced in the stretching machine and optionally rolled in the optional calibration machine to an expanded metal sheet comprising periodic deformations and e) a stacking machine for stacking expanded metal sheets comprising periodic deformations to a structured cross-channel packing element, wherein the sheet storage unit is embodied so that it directly receives the expanded metal sheet produced in the stretching machine and optionally rolled in the optional calibration machine and releases the expanded metal sheet directly to the forming machine.

Classes IPC  ?

• B01J 19/32 - Eléments de remplissage en forme de grille ou d'éléments composés de plusieurs pièces pour constituer une unité ou un module dans l'appareil de transfert de chaleur ou de matière

Abrégé

The present invention relates to a structured cross-channel packing element for a column for mass transfer and/or heat exchange between a heavy and a light fluid phase, wherein the structured cross-channel packing element comprises at least two adjacent layers made of expanded metal sheets each comprising openings, which are surrounded and separated from each other by separating elements, wherein at least two of the at least two layers are arranged in the longitudinal direction of the packing element parallel and in touching contact with each other so that an open space extending from one end to the opposite end of the at least two layers is provided between them so that at least one of the heavy and the light fluid phase may flow through it, wherein the ratio between the average width of at least 50% of the separating elements between adjacent openings and the sheet material thickness is at least 15, wherein the ratio between the maximum distance between at least two of the at least two layers measured in the plane being perpendicular of the longitudinal direction and the average width of the separating elements is at least 4, and wherein the ratio between the distance between two openings being in the direction perpendicular to the stretch direction of the expanded metal sheet adjacent to a separating element and the average width of this separating element is for at least 50% of all separating elements 4 to 6.

Classes IPC  ?

• B01J 19/32 - Eléments de remplissage en forme de grille ou d'éléments composés de plusieurs pièces pour constituer une unité ou un module dans l'appareil de transfert de chaleur ou de matière

Abrégé

The present invention relates to a sensing arrangement (10) particularly for sensing a physical parameter inside a closed container (11) and to transmit the respective data through the container wall (14) to the outside of the container (11), comprising an inside circuit (12) arranged inside a closed container (11) and further comprising an outside circuit (13) arranged outside the closed container (11). The inside circuit (12) comprises a transmitter circuit (15) that is configured to create a controller output signal (OS) that characterizes information to be transmitted, such as sensor information (SI). A first inside piezoelectric transducer (24) of the transmitter circuit (15) creates an acoustic data signal (DS) based on the controller output signal (OS) and transmits the acoustic data signal (DS) through the wall (14) of the container (11) to a first outside piezoelectric transducer (30) of the controller outside circuit (13). The controller output signal (OS) and/or the data signal (DS) do not contain sensor information (SI) in the amplitude or phase or frequency of the controller output signal (OS) and/or the data signal (DS). The controller output signal (OS) is preferably pulse width modulated.

Classes IPC  ?

• G01D 21/00 - Mesures ou tests non prévus ailleurs
• H04B 11/00 - Systèmes de transmission utilisant des ondes ultrasonores, sonores ou infrasonores

Abrégé

The present invention relates to a process for purifying a crude composition comprising the rectification of the crude composition in a rectification plant comprising a rectification column comprising an overhead condenser for condensing the head fraction and a reboiler for evaporating the bottom fraction, wherein the difference between the temperature of the head fraction and the temperature of the bottom fraction is at most 20°C, wherein a heat pump operates between the overhead condenser and the reboiler, wherein the heat pump is completely separated from the process to prevent any contamination, wherein the heat pump is an indirect heat pump and is operated with water or methanol as refrigerant, wherein the indirect heat pump includes an expansion valve and a compressor, and wherein the heat pump comprises a trim condenser, which is located upstream of the compres- sor.

Classes IPC  ?

• B01D 3/00 - Distillation ou procédés d'échange apparentés dans lesquels des liquides sont en contact avec des milieux gazeux, p.ex. extraction

Abrégé

Invention relates to method of operating a sealing monitoring system (10) in a sealing (11) of a rotatable shaft (14), comprising a sealing (11), provided with a flushing liquid system (32), between a rotatable shaft (14) and a stationary housing (22), a first liquid detector (40) configured to detect presence of flushing liquid in the flushing liquid system (32), the method comprising - detecting a first flushing liquid presence status in the flushing liquid system by means of the first liquid detector (40), and a) in case the first flushing liquid presence status is affirmative, transmitting the first flushing liquid presence status to a further processing using a wireless data communication system (36) with a first data transmission interval between the transmissions, and b) in case the first flushing liquid presence status is negative, transmitting the first flushing liquid presence status to further processing using the wireless data communication system (36) with a second data transmission interval being shorter than the first transmission interval between the transmissions.

Classes IPC  ?

• F16J 15/34 - Joints d'étanchéité entre deux surfaces mobiles l'une par rapport à l'autre par bague glissante pressée contre la face plus ou moins radiale d'une des deux parties
• G08B 21/18 - Alarmes de situation

Abrégé

566) are also products of the isomerization unit. The dividing wall column merges operation of two conventional distillation columns into a single column leading to substantial cost savings. The dividing wall for this particular application can be located either in the top, bottom, or middle section of the column. Using a top, bottom, or middle dividing wall column for this application has significant advantages over conventional distillation columns. The hexane, produced as a byproduct from the isomerization unit is of a much superior quality to that produced by a solvent extraction process, which is the conventional process for producing hexane. The operating cost for the production of hexane from an isomerization unit is significantly reduced compared to the cost of hexane produced by solvent extraction processes.

Classes IPC  ?

• C10G 7/00 - Distillation des huiles d'hydrocarbures
• B01D 3/14 - Distillation fractionnée
• C10G 7/02 - Stabilisation de l'essence par enlèvement des gaz au moyen d'un fractionnement
• C10G 67/02 - Traitement des huiles d'hydrocarbures, uniquement par au moins un procédé d'hydrotraitement et au moins un procédé de raffinage en l'absence d'hydrogène uniquement par plusieurs étapes en série
• C10G 45/58 - Raffinage des huiles d'hydrocarbures au moyen d'hydrogène ou de composés donneurs d'hydrogène pour changer la structure du squelette de certains hydrocarbures sans craquer les autres hydrocarbures présents, p.ex. pour abaisser le point d'écoulement; Hydrocraquage sélectif des paraffines normales

Abrégé

The present invention relates to a mechanical sealing arrangement, the mechanical sealing arrangement (10) having a rotary part (12), a non-rotary part (20) and a signal processing arrangement (30), the rotary part (12) comprising at least a rotary slide ring (18) and a rotary slide ring carrier (16), the non-rotary part (20) comprising at least a non-rotary slide ring (24) and a non-rotary slide ring carrier (22), and the signal processing arrangement (30) comprising at least one sensor (38, 48) for monitoring the operation of the mechanical sealing arrangement, wherein a sensor ring (32) is provided on the non-rotary slide ring carrier (22), the sensor ring (32) being provided with the at least one sensor (38, 48) and means (34) for transmitting measurement data from the at least one sensor (38,48) to further processing.

Classes IPC  ?

• F16J 15/34 - Joints d'étanchéité entre deux surfaces mobiles l'une par rapport à l'autre par bague glissante pressée contre la face plus ou moins radiale d'une des deux parties

Abrégé

The present invention relates to a bearing housing for use in, for instance, various pumps, mixers and agitators.The bearing housing (10) of the present invention comprises a hollow shell (12) with opposite ends having coaxial openings (14, 6) for at least one bearing element at each end thereof, wherein the shell (12) between the openings (14, 16) has, when assembled in position for use, a bottom (26) with a bottom surface (261), the bottom (26) having an oil outlet (34) and the bottom surface (261) having an oil outlet opening (341), wherein a cavity (361) for impurities is arranged below the bottom surface (261) of the shell (12), the cavity (361) being arranged in flow communication with the oil outlet (34) and the oil outlet opening (341).

Classes IPC  ?

• B01D 17/02 - Séparation de liquides non miscibles
• B01D 21/00 - Séparation par sédimentation de particules solides en suspension dans des liquides
• F16C 33/66 - Pièces ou détails particuliers pour la lubrification
• F16C 33/10 - Structures relatives à la lubrification
• F16C 35/04 - Supports rigides de paliers; Corps de paliers, p.ex. calottes, couvercles dans le cas de roulements à billes ou à rouleaux
• F16N 31/00 - Dispositifs pour recueillir ou retenir le lubrifiant dans les machines ou appareils ou pour l'en évacuer

Abrégé

The present invention relates to a three-dimensional printing system for preparing a three-dimensional object made at least partially of an expanded polymer comprising: i) a printing device for transporting and depositing an expanded strand of polymer including a blowing agent onto a surface and ii) a three-dimensional movement device for adjusting the position of the printing device in a predefined three-dimensional matrix so as to allow to deposit the strand of expanded polymer at a predetermined time at a precise position within the three-dimensional matrix, wherein the printing device comprises: a) a feed section, b) a transporting section, c) a surface melting section and d) a terminal printing head section for depositing the expanded polymer strand onto the surface, wherein all of the feed section a), the transporting section b), the surface melting section c) and the printing head section d) are tubular sections having the same inner diameter, and wherein the surface melting section c) comprises a solid-state welding element, a laser beam, a generator of hot gas or liquid and/or a generator of heat by means of an exothermal reaction.

Classes IPC  ?

• B29C 44/02 - Moulage par pression interne engendrée dans la matière, p.ex. par gonflage ou par moussage pour la fabrication d'objets de longueur définie, c.à d. d'objets séparés
• B29C 64/118 - Procédés de fabrication additive n’utilisant que des matériaux liquides ou visqueux, p.ex. dépôt d’un cordon continu de matériau visqueux utilisant un matériau filamentaire mis en fusion, p.ex. modélisation par dépôt de fil en fusion [FDM]
• B29C 64/106 - Procédés de fabrication additive n’utilisant que des matériaux liquides ou visqueux, p.ex. dépôt d’un cordon continu de matériau visqueux
• B29C 64/209 - Têtes; Buses
• B29C 64/321 - Alimentation
• B33Y 30/00 - Appareils pour la fabrication additive; Leurs parties constitutives ou accessoires à cet effet
• B33Y 40/00 - Opérations ou équipements auxiliaires, p.ex. pour la manipulation de matériau
• B29C 44/50 - Alimentation en matière à mouler dans une cavité de moulage ouverte ou sur une surface mobile, c.à d. pour la fabrication d'objets de longueur indéfinie par différence de pression, p.ex. par extrusion ou par pulvérisation

Abrégé

The present invention relates to a flotation apparatus for separating in particular oil from a dispersion containing water as continuous phase and oil as dispersed phase, the apparatus comprising a vessel comprising in its longitudinal direction one or more longitudinal cell sections, wherein at least one of the one or more longitudinal cell sections comprises: - at least one underflow weir, - at least one overflow weir, wherein the overflow weir is located in a distance to and displaced in the direction to the downstream end of the vessel from the underflow weir, - at least one gas injection means being located vertically below the underflow weir or being located in the channel formed between the underflow weir and the overflow weir, - at least one removal means for removing the second fraction being formed during the operation of the flotation apparatus on the liquid level from the liquid level and - at least one hydraulic means for hydraulically pushing the second fraction being formed during the operation of the flotation apparatus on the liquid level of the vessel into the removal means by means of a liquid stream, by means of a liquid/gas stream and/or by means of a gas stream, wherein the respective liquid stream, liquid/gas stream and/or gas stream is ejected by the hydraulic means onto the liquid level of the vessel and/or onto the second fraction being formed during the operation of the flotation apparatus on the liquid level.

Classes IPC  ?

• B03D 1/14 - Machines de flottation
• B03D 1/24 - Machines de flottation pneumatiques
• B01D 17/02 - Séparation de liquides non miscibles
• B01D 21/00 - Séparation par sédimentation de particules solides en suspension dans des liquides
• B01D 21/24 - Mécanismes d'alimentation ou d'évacuation pour bacs de décantation
• B01D 17/12 - Dispositifs auxiliaires spécialement adaptés pour être utilisés avec les appareils pour séparer des liquides, p.ex. circuits de commande
• B01D 19/00 - Dégazage de liquides

Abrégé

The present invention relates to a three-dimensional printing system for preparing a three-dimensional object made at least partially of an expanded polymer comprising: • i) a printing device (10) for preparing an expandable polymer melt and for depositing a strand of the expandable, expanding or expanded polymer onto a surface and • II) a three-dimensional movement device for adjusting the position of the printing device in a predefined three-dimensional matrix so as to allow to deposit the strand of expandable, expanding or expanded polymer at a predetermined time at a precise position within the three-dimensional matrix, wherein the printing device comprises: • a) a feed section (16) at the upstream end of the printing device • b) a heating section (20), • c) a pressurizing section (22), • d) a blowing agent supply line (26), • e) a mixing section (24), • f) a cooling section (28)and • g) a terminal printing head section (30) at the downstream end of the printing device including a die for depositing the strand of expandable, expanding or expanded polymer onto the surface, wherein the mixing section e) and the cooling section f) are arranged downstream of the feed section a), of the heating section b) and of the pressurizing section c), and wherein the blowing agent supply line d) has one or more discharge end(s), which i s/a re connected with one or more of the pressurizing section c), mixing section e) and cooling section f).

Classes IPC  ?

• B29C 44/02 - Moulage par pression interne engendrée dans la matière, p.ex. par gonflage ou par moussage pour la fabrication d'objets de longueur définie, c.à d. d'objets séparés
• B29C 44/50 - Alimentation en matière à mouler dans une cavité de moulage ouverte ou sur une surface mobile, c.à d. pour la fabrication d'objets de longueur indéfinie par différence de pression, p.ex. par extrusion ou par pulvérisation
• B29C 64/118 - Procédés de fabrication additive n’utilisant que des matériaux liquides ou visqueux, p.ex. dépôt d’un cordon continu de matériau visqueux utilisant un matériau filamentaire mis en fusion, p.ex. modélisation par dépôt de fil en fusion [FDM]
• B29C 64/209 - Têtes; Buses
• B29C 64/106 - Procédés de fabrication additive n’utilisant que des matériaux liquides ou visqueux, p.ex. dépôt d’un cordon continu de matériau visqueux
• B29C 64/194 - Procédés de fabrication additive impliquant des opérations supplémentaires effectuées sur les couches ajoutées, p.ex. lissage, meulage ou contrôle d’épaisseur pendant l’empilage des couches
• B33Y 10/00 - Procédés de fabrication additive
• B33Y 30/00 - Appareils pour la fabrication additive; Leurs parties constitutives ou accessoires à cet effet

Abrégé

The present invention relates to a three-dimensional printing system for preparing a three-dimensional object made at least partially of an expanded polymer comprising: • i) an autoclave, • ii) a printing device (10) for preparing an expandable polymer melt and for depositing a strand of the expandable, expanding or expanded polymer onto a surface and • iii) a three-dimensional movement device for adjusting the position of the printing device in a predefined three-dimensional matrix so as to allow to deposit the strand of expandable, expanding or expanded polymer at a predetermined time at a precise position within the three-dimensional matrix, wherein the printing device comprises: • a) a feed section (16), • b) a cooling section (18), • c) a backflow prevention section (20), • d) a heating section (22) and • e) a terminal printing head section (24) including a die for depositing the expandable, expanding or expanded polymer strand onto the surface.

Classes IPC  ?

• B29C 44/02 - Moulage par pression interne engendrée dans la matière, p.ex. par gonflage ou par moussage pour la fabrication d'objets de longueur définie, c.à d. d'objets séparés
• B29C 44/34 - Moulage par pression interne engendrée dans la matière, p.ex. par gonflage ou par moussage - Eléments constitutifs, détails ou accessoires; Opérations auxiliaires
• B29C 44/50 - Alimentation en matière à mouler dans une cavité de moulage ouverte ou sur une surface mobile, c.à d. pour la fabrication d'objets de longueur indéfinie par différence de pression, p.ex. par extrusion ou par pulvérisation
• B29C 64/106 - Procédés de fabrication additive n’utilisant que des matériaux liquides ou visqueux, p.ex. dépôt d’un cordon continu de matériau visqueux
• B29C 64/209 - Têtes; Buses
• B29C 64/321 - Alimentation
• B33Y 30/00 - Appareils pour la fabrication additive; Leurs parties constitutives ou accessoires à cet effet
• B33Y 40/00 - Opérations ou équipements auxiliaires, p.ex. pour la manipulation de matériau

Abrégé

A shut-off device for sealing a shaft of a rotary machine at standstill is proposed, the shut-off device having an activated state for sealing the shaft (120) and a deactivated state for a free rotation of the shaft (120) within the shut-off device, wherein the shut-off device comprises a housing (2), a central passage (3) extending in an axial direction (A) and adapted for surrounding the shaft (120), a ring-shaped first disk (31) and a ring-shaped second disk (32) arranged in the housing (2) in parallel with each other and spaced apart from each other regarding the axial direction (A), an expandable annular sealing element (6) having a first side wall (61), a second side wall (62) and an elastic bottom (63), wherein the first side wall (61) and the second side wall (62) are each extending in a radial direction, and the bottom (63) connects a radially inner end of the first side wall (61 ) with a radially inner end of the second side wall (62), and wherein the housing (2) comprises an inlet (5) for a fluid for expanding the sealing element (6), wherein the first side wall (61) of the sealing element (6) is arranged and clamped between the housing (2) and the first disk (31) and the second side wall (62) of the sealing element (6) is arranged and clamped between the housing (2) and the second disk (32). In addition, a rotary machine comprising such a shut-off device is proposed.

Classes IPC  ?

• F16J 15/00 - Joints d'étanchéité
• F16J 15/46 - Joints d'étanchéité par bague de garniture dilatée ou comprimée dans son logement par pression d'un fluide, p.ex. garnitures gonflables

Abrégé

Invention relates to an agitator assembly (10) comprising an agitator body (16) configured to be attached to a wall (12) of a vessel or a tank (14), and a shaft (22) having an axial direction, the shaft (22) being rotatably assembled to the agitator body (16) and extending through a lead-through (28) in the agitator body (16) into the vessel or the tank (14), when assembled for use, and further a sealing (30) configured to seal the rotatable shaft (22). The agitator assembly (10) further comprises a blocking part (32) arranged to f the agitator body (16) provided with a shaft opening (34) through which the shaft (22) is arranged to extend, and the blocking part (32) is movable in axial direction, and the blocking part (32) and the shaft (22) are provided with mating surfaces (36, 38) which, when brought together by the axial movement of the blocking part (32), provides a temporary seal between the blocking part (32) and the shaft (22), and the blocking part (32) provides a closed space (31) to the agitator body (16) around the lead-through (28).

Classes IPC  ?

• B01F 15/00 - Accessoires pour mélangeurs
• B01F 13/04 - Mélangeurs associés à des dispositifs de sécurité
• F16J 15/00 - Joints d'étanchéité

Abrégé

The present invention relates to single-or multi-stage centrifugal pumps having novel disc-type balancing device for balancing the axial forces of the pump. The disc-type balancing device is provided with at least one annular groove (58) in at least one of the non-axial counter surfaces (52) of the balancing disc and the counter member, and a flow passage (60) in at least one of the non-axial counter surfaces (52), the flow passage (60) leading from radially inside the balancing gap to the annular groove (58).

Classes IPC  ?

• F04D 29/041 - Equilibrage des poussées axiales
• F04D 29/22 - Rotors spécialement pour les pompes centrifuges
• F04D 1/06 - Pompes multiétagées
• F04D 29/047 - Paliers hydrodynamiques

Abrégé

A pad for a tilting pad thrust bearing for supporting the shaft (110) of a rotary machine (100)is proposed, the pad comprising a top surface (2), a leading edge (5) extending in a radial direction (X) and a trailing edge (6), wherein the pad (1) comprises a fluid channel (20) arranged at the top surface (2),said fluid channel (20) ending in the top surface (2), said fluid channel (20) forming a fluid communication between the leading edge (5) of the pad (1) and the top surface (2) of the pad (1). Furthermore a tilting pad thrust bearing assembly is proposed.

Classes IPC  ?

• F16C 17/06 - Paliers à contact lisse pour mouvement de rotation exclusivement pour charges axiales uniquement avec segments supportés obliquement, p.ex. paliers Michell
• F16C 33/10 - Structures relatives à la lubrification

Abrégé

A system for comminuting solid waste material including a shredding device disposed within the casing and comprising parallel first and second shredding stacks that include first and second parallel shafts rotatably mounted between an upper shredding device housing and a lower shredding device housing and a rotating screening drum disposed within the casing and mounted between an upper screening drum housing and a lower screening drum housing, the rotating screening drum configured to permit fluid to pass therethrough while capturing solids on an outer surface for delivery to shredding device, an upstream portion of the rotating screening drum disposed upstream of an upstream portion of the shredding device. The upper shredding device housing and the lower screening device housing are separate members from the upper screening drum housing and the lower screening drum housing to permit interchangeability of different sizes of these components to meet system needs.

Classes IPC  ?

• B02C 18/00 - Désagrégation par couteaux ou autres organes coupants ou déchirants qui transforment le matériau en fragments; Hachoirs ou appareils similaires utilisant des vis ou analogue
• B02C 18/06 - Désagrégation par couteaux ou autres organes coupants ou déchirants qui transforment le matériau en fragments; Hachoirs ou appareils similaires utilisant des vis ou analogue à couteaux rotatifs
• B02C 23/08 - Séparation ou triage de matériaux, associé au broyage ou à la désagrégation
• B02C 18/18 - Couteaux; Leur montage

Abrégé

A system for comminuting solid waste material including a casing defining a comminution chamber having two side walls and adapted for connection in a solid waste disposal channel. The system includes a first shredding device and a second shredding device disposed along a line extending perpendicular to a flow direction in the channel to form a pair of interactive shredding members. A rotating screening drum disposed within the casing upstream of the first and second shredding devices and positioned between the first and second shredding devices, the rotating screening drum configured to permit fluid to pass therethrough and to move solids toward one of the shredding devices. The rotating screening drum is configured to rotate clockwise and counter clockwise to alternately distribute solids captured thereon to one of the first and second shredding devices.

Classes IPC  ?

• B02C 18/14 - Désagrégation par couteaux ou autres organes coupants ou déchirants qui transforment le matériau en fragments; Hachoirs ou appareils similaires utilisant des vis ou analogue à couteaux rotatifs à l'intérieur de récipients horizontaux
• B02C 18/16 - Désagrégation par couteaux ou autres organes coupants ou déchirants qui transforment le matériau en fragments; Hachoirs ou appareils similaires utilisant des vis ou analogue à couteaux rotatifs - Parties constitutives
• B02C 18/18 - Couteaux; Leur montage
• B29B 13/10 - Conditionnement ou traitement physique de la matière à façonner par filtration

Abrégé

A mounting device and method for a screw connection are proposed, with a rotating ring (2) for rotating the threaded nut (12), a threadless sleeve (3) for receiving the rotating ring (2) and a tensioning device (4) for a torsion-free pretension of the threaded bolt (11), wherein the sleeve (3) has a length (L3) which is larger than a length (L2) of the rotating ring (2), wherein the sleeve (3) has a first axial end face (31) for placing on one of the components (101, 102), a second axial end face (32) on which a force can be exerted with the tensioning device (4).

Classes IPC  ?

• B25B 29/02 - Dispositifs pour appliquer une tension prédéterminée à un boulon

Abrégé

Provided is a wash press that separates liquids and solids from a waste stream. The wash press includes a tank having a cylindrical shape. Provided is a wash press that separates liquids and solids from a waste stream. The wash press includes a tank having a semi- cylindrical shape. The tank has an inlet at a top of the tank for receiving a waste stream, a screen disposed in a portion of a bottom of the tank to permit liquid to pass therethrough, and an outlet for permitting solid materials separated from the liquid to pass therethrough. A rotor extends through the tank for transporting and dewatering the waste material entering the tank. The rotor includes a plurality of helical flights interconnected by paddle members to permit agitating the waste material. The wash press also includes a removable cover that enables the rotor to be lifted vertically, and a removably attached screen to facilitate replacement/repair of the same.

Classes IPC  ?

• B01D 25/02 - Filtres formés par l'assemblage de plusieurs éléments filtrants fixés ensemble ou parties de tels éléments dont les éléments sont constitués par des unités filtrantes indépendantes et préfabriquées, p.ex. systèmes modulaires
• B01D 29/56 - Filtres à éléments filtrants stationnaires pendant la filtration, p.ex. filtres à aspiration ou à pression, non couverts par les groupes ; Leurs éléments filtrants à plusieurs éléments filtrants caractérisés par leur agencement relatif montés en série
• B01D 35/02 - Filtres adaptés à des endroits particuliers, p.ex. conduites, pompes, robinets

Abrégé

The invention relates to a bearing housing (115) for a turbomachine (100), wherein the bearing housing (115) comprises a bearing axis (LA), a bearing chamber (200) for accommodating a bearing (116, 120, 121), and a lubricant chamber (202) for accommodating a lubricant, and the lubricant chamber (202) and the bearing chamber (200) are fluidically connected via an opening (203), wherein the lubricant chamber (202) comprises a wall portion (204) for releasing heat to the surroundings, which wall portion (204) has an inner surface (205) facing the lubricant chamber (202) and an outer surface (206) facing the surroundings. In order that adequate cooling of the bearing (116, 120, 121) and of the lubricant can be achieved even at high ambient temperatures, internal cooling fins (207) are arranged on a part of the inner surface (205).

Classes IPC  ?

• F04D 1/06 - Pompes multiétagées
• F04D 29/047 - Paliers hydrodynamiques
• F04D 29/58 - Refroidissement; Chauffage; Réduction du transfert de chaleur
• F04D 29/06 - Lubrification

Abrégé

The present invention relates to a mechanical seal having a rotary part and a non-rotary part, the rotary part having at least a rotary slide ring (24) and a rotary slide ring carrier, and the non-rotary part having at least a non-rotary slide ring (36) and a non-rotary slide ring carrier (34), wherein the mechanical seal is pro- vided with a circumferential groove (54, 58) in one of the rotary slide ring (24) and the non-rotary slide ring and a sensor (62) in communication with the me-chanical seal (10).

Classes IPC  ?

• F16J 15/34 - Joints d'étanchéité entre deux surfaces mobiles l'une par rapport à l'autre par bague glissante pressée contre la face plus ou moins radiale d'une des deux parties

Abrégé

A passive actuator is proposed for suppressing a vibration of a column pipe of a vertical pump, wherein the actuator (10) is adapted for being mounted between the column pipe (3) of the vertical pump (1) and a canister (6) surrounding the column pipe (3), said passive actuator (10) having a first operational state for adding stiffness between the canister and the column pipe (3) and a second operational state for at least reducing said stiffness, wherein the passive actuator (10) comprises a plurality of passive actuator elements (20), each of which is designed to automatically change from the second operational state to the first operational state when the temperature of the passive actuator element (20) changes from a second temperature to a first temperature, the first temperature being different from the second temperature, and to automatically change from the first operational state to the second operational state, when the temperature of the passive actuator element (20) changes from the first temperature to the second temperature. In addition, a vertical pump is proposed comprising such a passive actuator (10) as well as a method of retrofitting a vertical pump.

Classes IPC  ?

• F03G 7/06 - Mécanismes produisant une puissance mécanique, non prévus ailleurs ou utilisant une source d'énergie non prévue ailleurs utilisant la dilatation ou la contraction des corps produites par le chauffage, le refroidissement, l'humidification, le séchage ou par des phénomènes similaires
• F04D 29/66 - Lutte contre la cavitation, les tourbillons, le bruit, les vibrations ou phénomènes analogues; Equilibrage

Abrégé

A rotary machine for acting on a fluid is proposed comprising a stationary housing (2), a rotor (3) for interacting with the fluid, a shaft (4) for rotating the rotor (3) about an axial direction (A), a bearing unit (5) for supporting the rotor (3), and a sealing arrangement (6) for sealing the bearing unit (5) with respect to the rotor (3), wherein the rotor (3) is arranged in the housing (2), and wherein the sealing arrangement (6) comprises a stationary sealing element (61) surrounding the shaft (4) and designed for a contactless sealing of the shaft (4), and wherein the sealing arrangement (6) further comprises a rotor ring (62) for preventing an axial flow along the shaft (4) to the rotor (3), and a cover plate (63), wherein the rotor ring (62) is rotationally fixedly connected to the rotor (3) and arranged axially adjacent to the sealing element (61), wherein the rotor ring (62) comprises a radially outer edge (622) extending in the axial direction (A) and surrounding the sealing element (61), wherein the cover plate (63) is fixed with respect to the housing (2) and surrounds the rotor ring (2), wherein the cover plate (63) has an outer rim (631) extending in the axial direction (A), wherein a drain chamber (64) is formed between the outer edge (622) of the rotor ring (62) and the outer rim (631) of the cover plate (63), and wherein a discharge passage (65) is provided for discharging the drain chamber (64).

Classes IPC  ?

• F01D 7/00 - Rotors à aubes réglables en marche; Leur commande
• F04D 29/08 - Joints d'étanchéité
• F04D 29/10 - Joints d'étanchéité pour arbre
• F04D 29/063 - Lubrification spécialement adaptée aux pompes pour fluides compressibles
• F01D 11/02 - Prévention ou réduction des pertes internes du fluide énergétique, p.ex. entre étages par obturation non contact, p.ex. du type labyrinthe
• F01D 25/18 - Systèmes de lubrification

Abrégé

A multiphase pump for conveying a multiphase process fluid is proposed having a common housing (2) surrounding a pump unit (3) and a drive unit (4), wherein the housing (2) comprises a pump inlet (5) and a pump outlet (6) for the process fluid, wherein the pump unit (3) comprises at least one impeller (7) for conveying the process fluid from the pump inlet (5) to the pump outlet (6), and a pump shaft (8) on which each impeller (7) is mounted, and wherein the drive unit (4) comprises a drive shaft (9) for driving the pump shaft (8), and an electric motor (10) for rotating the drive shaft (9) about an axial direction (A), and wherein a hydrodynamic torque converter (20) is provided for hydrodynamically coupling the drive shaft (9) to the pump shaft (8), the torque converter (20) having a casing (21) for receiving a transmission fluid, a pump wheel (22) connected to the drive shaft (9), a turbine wheel (23) connected to the pump shaft (8), and a stator (24) for guiding the transmission fluid to the turbine wheel (23). In addition, a method for operating such a multiphase pump (1) is proposed.

Classes IPC  ?

• F04D 13/02 - Ensembles comprenant les pompes et leurs moyens d'entraînement
• F04D 13/06 - Ensembles comprenant les pompes et leurs moyens d'entraînement la pompe étant entraînée par l'électricité
• F04D 15/00 - Commande, p.ex.régulation de pompes, d'installations ou de systèmes de pompage
• F04D 31/00 - Pompage simultané de liquides et de fluides compressibles
• F04D 13/08 - Ensembles comprenant les pompes et leurs moyens d'entraînement la pompe étant entraînée par l'électricité pour utilisation en position immergée

Abrégé

The invention relates to a liquid distributor as a component installed in columns for a defined distribution of a liquid flowing downward within a column, comprising at least a bottom and side walls, which constitute a container for the accommodation and defined distribution of the liquid, characterized in that the bottom and at least one of the side walls are constructed from plates connected to each other, wherein the plate or the plates of the at least one side wall comprise a fiber composite material.

Classes IPC  ?

• B01D 3/00 - Distillation ou procédés d'échange apparentés dans lesquels des liquides sont en contact avec des milieux gazeux, p.ex. extraction
• B01D 53/18 - Unités d'absorption; Distributeurs de liquides
• C08J 5/04 - Renforcement des composés macromoléculaires avec des matériaux fibreux en vrac ou en nappes
• F28F 25/04 - Augets répartiteurs ou collecteurs

Abrégé

The present invention relates to a new kind of a double mechanical seal used, for example, for sealing a shaft of a centrifugal pump. The present invention is especially aimed at solving problems relating to the circulation of the barrier fluid, i.e. liquid used for lubricating the sealing surfaces.

Classes IPC  ?

• F16J 15/34 - Joints d'étanchéité entre deux surfaces mobiles l'une par rapport à l'autre par bague glissante pressée contre la face plus ou moins radiale d'une des deux parties

Abrégé

The present invention relates to single- or multi-stage centrifugal pumps having novel disc- type means for balancing the axial forces of the pump. The disc-type balancing means are provided with at least one annular groove (54) in at least one of the non-axial counter surfaces (50) and (52) of the balancing disc (22) and the counter member (28).

Classes IPC  ?

• F04D 29/041 - Equilibrage des poussées axiales
• F04D 29/22 - Rotors spécialement pour les pompes centrifuges
• F04D 29/047 - Paliers hydrodynamiques
• F04D 1/06 - Pompes multiétagées

Abrégé

The present invention relates to an arrangement for and a method of biomass hydrolysis comprising a feed pump (2), a pre-hydrolysis reactor (106) and a feed line (4) therebetween for feeding fresh biomass slurry to the pre-hydrolysis reactor (106), wherein the feed pump is a centrifugal feed pump (2) and the pre-hydrolysis reactor is an upflow reactor (106).

Classes IPC  ?

• C12M 1/00 - Appareillage pour l'enzymologie ou la microbiologie
• C12P 7/10 - Ethanol en tant que produit chimique et non en tant que boisson alcoolique préparé comme sous-produit, ou préparé à partir d'un substrat constitué par des déchets ou par des matières cellulosiques d'un substrat constitué par des matières cellulosiques

Abrégé

The present invention relates to an impeller for a centrifugal pump. The present invention relates especially to a novel impeller structure for a centrifugal pump used for feeding both fibrous suspensions and water into a headbox of a fibrous web machine. The centrifugal pump utilizing the impeller of the present invention is, for instance, suitable for pumping stock for both liquid-laid and foam-laid paper, tissue or board making applications and for pumping water or other dilution fluid into the headbox circulation. In general, the impeller of the present invention is especially suitable for all such pumping tasks in the production of fibrous webs that a pulseless or low-pulse impeller is needed.

Classes IPC  ?

• F04D 7/04 - Pompes adaptées à la manipulation de liquides particuliers, p.ex. par choix de matériaux spéciaux pour les pompes ou pièces de pompe du type centrifuge les fluides étant visqueux ou non homogènes
• F04D 29/22 - Rotors spécialement pour les pompes centrifuges

Abrégé

A bearing for a pump with a shaft (10) rotating around an axial direction (A) is proposed said bearing comprising a housing (2) and a bearing cover (3) fixed to the housing (2), a bearing structure (4) for supporting the shaft (10) of the pump (100), a reservoir (22) for a lubricant and an oil ring (5) for transporting the lubricant and for supplying the lubricant to the bearing structure (4) wherein the oil ring (5) is arranged for being moved by the rotating shaft (10) and wherein a retaining element (7) is provided for that is fixed with respect to the housing (2) or the cover (3), the retaining element (7) being designed and arranged such that it restricts a movement of the oil ring (5) at least in the axial direction (A). In addition, a method of retrofitting a bearing for a pump is proposed.

Classes IPC  ?

• F16C 33/66 - Pièces ou détails particuliers pour la lubrification
• F16C 29/02 - Paliers à contact lisse

Abrégé

The present invention relates to an impeller and a centrifugal pump using such. The present invention especially relates to modifying an impeller of a centrifugal pump in such a way that said pump may be used without a risk of damaging a shaft seal or like at capacities higher than that at the optimal operating point. The impeller comprises at least a hub (52) extending radially outwardly in the form of a shroud (54), at least one working vane (56) arranged on the front surface of the hub (52) and the shroud (54), at least one rear vane (60) on the rear surface of the shroud (54), and at least one balancing conduit (58) extending through said hub (52) and shroud (54), the first opening (64) of the balancing conduit (58) in the first face of the impeller hub (52) being located within the circle C formed by the radially innermost part (56e) of the at least one working vane (56), while the impeller (50) is rotated about the axis (8).

Classes IPC  ?

• F04D 29/22 - Rotors spécialement pour les pompes centrifuges

Abrégé

The present invention relates to a method of and an arrangement for introducing fiber suspension or pulp from a pulp vessel (10) to a washing and/or filtering apparatus (20). In accordance with an advantageous embodiment of the present invention, the method and the arrangement are based on simultaneous division and degassing of pulp at (18) immediately upstream of the washing and/or filtering apparatus (20).

Classes IPC  ?

• D21C 9/02 - Lavage
• D21C 9/18 - Post-traitement de la pâte de cellulose, p.ex. de la pâte de bois, ou des linters de coton Élimination de l'eau
• D21C 7/08 - Dispositifs d'évacuation

Abrégé

What is proposed is a seal arrangement for sealing a pressure space (2) in a high-pressure pump, which is bounded by a first and a second bounding element (3, 4), with a separate seal element (5) which has a first sealing face (51) for cooperating with the first bounding element (3) and a second sealing face (52) for cooperating with the second bounding element (4), wherein the two sealing faces (51, 52) are inclined with respect to one another and each has a slot (53, 54) for receiving a seal ring (55), and wherein the seal element (5) is arranged and configured such that, when pressurized, it is displaceable all along one of the bounding elements (3, 4). Also proposed is a high-pressure pump with such a seal arrangement.

Classes IPC  ?

• F04D 29/08 - Joints d'étanchéité

Abrégé

The invention relates to a rotary machine for conveying a fluid, comprising a drive unit (2) for driving a shaft (5), a running wheel (31) arranged on the shaft (5) for conveying the fluid, at least one mechanical gasket (6) for sealing the shaft (5); a first and a second heat exchange system (41, 42) for cooling or for heating the mechanical gasket (6), wherein the first heat exchange system (41) has a fluid heat carrier for directly impacting the mechanical gasket (6). The second heat exchange system (42) comprises a heat exchange jacket (421), through which a fluid heat carrier can flow without direct contact with the mechanical gasket (6). The first and the second heat exchange system (41; 42) form a common heat exchange system (40), in which a common fluid heat carrier can be circulated, and an impeller (44) for circulating the fluid heat carrier in the heat exchange system (40) is provided. The invention further relates to a method for the heat exchange in a rotary machine.

Classes IPC  ?

• F04D 29/12 - Joints d'étanchéité pour arbre utilisant des bagues

Abrégé

The present invention relates to an apparatus for monitoring the surface level of a fluid in a vessel,a method of installing the apparatus in the vessel and a method of using the apparatus and the vessel. The apparatus of the present invention is applicable in all such vessels, containers, tanks, drop legs, blow tanks, reactors, etc. where information on the surface level of the fluid present in the vessel is needed for controlling the application. A good example is a vessel from which the fluid is about to be pumped further such that the surface level in the vessel is maintained within certain limits, whereby the operation of the pump has to be adjusted in relation to the surface level in the vessel.

Classes IPC  ?

• G01F 23/24 - Indication ou mesure du niveau des liquides ou des matériaux solides fluents, p.ex. indication en fonction du volume ou indication au moyen d'un signal d'alarme en mesurant des variables physiques autres que les dimensions linéaires, la pression ou le poids, selon le niveau à mesurer, p.ex. par la différence de transfert de chaleur de vapeur ou d'eau en mesurant les variations de résistance de résistances électriques produites par contact avec des fluides conducteurs
• G01F 23/26 - Indication ou mesure du niveau des liquides ou des matériaux solides fluents, p.ex. indication en fonction du volume ou indication au moyen d'un signal d'alarme en mesurant des variables physiques autres que les dimensions linéaires, la pression ou le poids, selon le niveau à mesurer, p.ex. par la différence de transfert de chaleur de vapeur ou d'eau en mesurant les variations de capacité ou l'inductance de condensateurs ou de bobines produites par la présence d'un liquide ou d'un matériau solide fluent dans des champs électriques ou électromagnétiques

Abrégé

The present invention relates to a novel rotor structure for a centrifugal flow machine. The rotor (10) of the invention has newly designed working vanes (14) that are attached to the hub (12) of the rotor without any support disc or shroud. Additionally, the novel vane (14) has means for efficiently flushing the sealing Chamber behind the rotor (10).

Classes IPC  ?

• F04D 29/24 - Aubes
• F04D 29/22 - Rotors spécialement pour les pompes centrifuges
• F04D 29/12 - Joints d'étanchéité pour arbre utilisant des bagues
• F04D 29/28 - Rotors spécialement adaptés aux fluides compressibles pour pompes centrifuges ou hélicocentrifuges

Abrégé

The invention relates to a method for assessing a wear state of a module (1, 11, 111, 112) of a turbomachine, in particular a bearing arrangement (11, 111, 112) of a pump or turbine, wherein a mechanical interrogating signal (21) with a predefinable signal shape is generated by means of a signal transmitter (2) in order to determine a wear characteristic variable, and a response signal (31) which is generated from the interrogating signal (21) is detected by way of a sensor (3) which is in contact with the module (1, 11, 111, 112). According to the invention, the response signal (31) is modified depending on a variation in a physical operating variable of the module (1, 11, 111, 112) according to a characteristic pattern, the wear characteristic variable is determined from the modification of the response signal (31), and the wear state is assessed using the wear characteristic variable. Moreover, the invention relates to a module (1, 11, 111, 112) of a turbomachine having a signal transmitter (2) and a sensor (3), and to a turbomachine having a module (1, 11, 111, 112) of this type.

Classes IPC  ?

• F04D 15/00 - Commande, p.ex.régulation de pompes, d'installations ou de systèmes de pompage
• F04D 15/02 - Arrêt de pompes ou de soupapes en cas de fonctionnement indésirable
• G01L 5/00 - Appareils ou procédés pour la mesure des forces, du travail, de la puissance mécanique ou du couple, spécialement adaptés à des fins spécifiques
• F16C 17/06 - Paliers à contact lisse pour mouvement de rotation exclusivement pour charges axiales uniquement avec segments supportés obliquement, p.ex. paliers Michell
• G01M 13/04 - Roulements
• G01L 5/16 - Appareils ou procédés pour la mesure des forces, du travail, de la puissance mécanique ou du couple, spécialement adaptés à des fins spécifiques pour la mesure de plusieurs composantes de la force

Abrégé

The invention relates to an impeller for a centrifugal pump, having at least one vane (11a; 11b), which has a concave bottom side (12a; 12b) at least in a partial region and at least one bending line (13a; 13b) in at least one portion, which extends at least substantially along a primary extension direction of the at least one vane (11a; 11b), wherein the vane (11a; 11b) is opened in a V-shape along the bending line (13a; 13b) in at least one portion in the direction of a surface normal of the bottom side (12a; 12b).

Classes IPC  ?

• F04D 29/24 - Aubes
• F04D 29/30 - Aubes
• F04D 1/00 - Pompes à flux radial, p.ex. pompes centrifuges; Pompes hélicocentrifuges

Abrégé

The present invention relates to a new kind of a slide ring (110, 112, 114, 116) and a mechanical seal, so called slide ring seal used, for example, for sealing a shaft space of a centrifugal pump in relation to a pumping space thereof. The present invention also relates to coupling said mechanical seal to a housing (130), to a shaft (120) and to a rotor (142) of a flow machine.

Classes IPC  ?

• F16J 15/34 - Joints d'étanchéité entre deux surfaces mobiles l'une par rapport à l'autre par bague glissante pressée contre la face plus ou moins radiale d'une des deux parties

Abrégé

The invention relates to a turbomachine (1), in particular a pump or turbine, comprising an impeller (2) which is arranged in an impeller area (3) of a housing (4) of the turbomachine (1) in a rotatable manner about a rotational axis (A). In order to exchange energy between a flow energy of a flowing fluid (F) and a mechanical rotational energy, the fluid (F) can be fed to the housing (4) of the turbomachine such that the fluid can be brought into fluidic contact with the impeller (2) so as to exchange energy and can be discharged again out of the housing (4) of the turbomachine. According to the invention, a flow conducting element (5, 51, 52) which runs about the rotational axis (A) in a circumferential direction (U) of the impeller (2) is provided in the impeller area (3) between an inner wall (31) of the impeller area (3) and the impeller (2) such that the impeller (2) is surrounded by the flow conducting element (5, 51, 52) with a specifiable axial width (B). The invention further relates to a flow conducting element (5, 51, 52) for a turbomachine (1).

Classes IPC  ?

• F04D 29/42 - Carters d'enveloppe; Tubulures pour le fluide énergétique pour pompes radiales ou hélicocentrifuges
• F04D 29/44 - Moyens de guidage du fluide, p.ex. diffuseurs

Abrégé

The invention relates to product-lubricated multiphase pump (2, 110, 116) for pumping a hydrocarbon-containing multiphase mixture. In order to achieve good cooling and lubrication of pump elements without a lot of operating fluid and operating fluid circuits, the multiphase pump (2, 110, 116) has a separation system (40) having a first separating stage (42) for at least partial separation of at least a part of the multiphase mixture into a plurality of phase-enriched components, and a feed system (66) for feeding a fluid-enriched fluid component as a lubricant to a pump element to be lubricated.

Classes IPC  ?

• F04D 13/08 - Ensembles comprenant les pompes et leurs moyens d'entraînement la pompe étant entraînée par l'électricité pour utilisation en position immergée
• E21B 43/12 - Procédés ou appareils pour commander l'écoulement du fluide extrait vers ou dans les puits
• F04D 29/06 - Lubrification
• F04D 29/58 - Refroidissement; Chauffage; Réduction du transfert de chaleur
• F04D 31/00 - Pompage simultané de liquides et de fluides compressibles
• F04D 13/06 - Ensembles comprenant les pompes et leurs moyens d'entraînement la pompe étant entraînée par l'électricité

Abrégé

The invention relates to a method for assessing an operating state of a turbomachine (1), which turbomachine (1) comprises an impeller (2) arranged on a rotor axis (A), and the rotor axis (A) with the impeller (2) is mounted in a machine housing (3) of the turbomachine (1) in a manner rotatable about an axial direction (Z) in a shaft bearing (4). According to the invention, in the operating state of the turbomachine, a first force sensor (Sx) is used to measure a first force component (Fx) of a bearing force acting on the rotor axis (A) along a first direction (X), which first direction (X) is perpendicular to the axial direction (Z). A second force sensor (Sy) is used to measure a second force component (Fy) of the bearing force in a second direction (Y), which second direction (Y) is perpendicular to the axial direction (Z) and is preferably simultaneously perpendicular to the first direction (X). A resulting force (Fr) is then formed from the first force component (Fx) and the second force component (Fy), a frequency analysis is used to create a frequency spectrum (ΩS1, ΩS2) of the resulting force (Fr), the frequency spectrum (ΩS1, ΩS2) is compared with a reference spectrum (Ωref), and an operating state assessment is finally carried out therefrom for a predefined operating state of the turbomachine. The invention also relates to a turbomachine for carrying out the method according to the invention.

Classes IPC  ?

• G01H 1/00 - Mesure des vibrations dans des solides en utilisant la conduction directe au détecteur

Abrégé

The invention relates to a pump device comprising an impeller (10a; 10c), which is mounted to rotate about a rotational axis (11a; 11b; 11c) in order to convey a pumpable medium, an inlet housing (12a), which opens out into a priming region (13a) upstream of the impeller (10a; 10c), and comprising a flow guiding element (14a; 14b), which is arranged at least partially inside the priming region (13a) and which is designed to guide the medium flowing towards the impeller (10a; 10c). According to the invention, the at least one flow guiding element (14a; 4b; 14c, 15c) is designed at least partially as an annular segment.

Classes IPC  ?

• F04D 29/42 - Carters d'enveloppe; Tubulures pour le fluide énergétique pour pompes radiales ou hélicocentrifuges
• F04D 29/44 - Moyens de guidage du fluide, p.ex. diffuseurs
• F04D 29/68 - Lutte contre la cavitation, les tourbillons, le bruit, les vibrations ou phénomènes analogues; Equilibrage en agissant sur les couches limites