A method for preparing a purified styrene composition with a styrene yield of at least 80%. The method comprises providing a crude composition containing styrene, and subjecting the crude composition to at least one crystallization step. The at least one crystallization step comprises at least one static crystallization stage and at least one dynamic crystallization stage.
C07C 5/03 - Préparation d'hydrocarbures à partir d'hydrocarbures contenant le même nombre d'atomes de carbone par hydrogénation de liaisons doubles carbone-carbone non aromatiques
C07C 7/00 - Purification, séparation ou stabilisation d'hydrocarbures; Emploi d'additifs
C07C 7/08 - Purification, séparation ou stabilisation d'hydrocarbures; Emploi d'additifs par distillation à l'aide de composés auxiliaires extractive
A structured packing element for a column for at least one of mass transfer and heat exchange between a heavy fluid phase and a light fluid phase. The structured packing element comprises at least two layers of a grid comprising openings that are surrounded and separated from each other by separating elements. At least two of the layers are arranged in a longitudinal direction parallel and in touching contact with each other such that an open space extending from one end to an opposite end of the layers is provided between the layers such that at least one of the heavy fluid phase and the light fluid phase may flow therethrough. An average width of at least 50% of the separating elements between adjacent openings is at least 15 times a layer material thickness and is between 70% and 125% of an average hydraulic diameter of the adjacent openings.
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
4.
PLANT AND METHOD FOR SEPARATING LIQUIFIED PETROLEUM GAS FROM FUEL GAS BY CRYOGENIC DISTILLATION
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.
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
5.
PLANT AND PROCESS FOR EFFICIENTLY PRODUCING A STRUCTURED CROSS-CHANNEL PACKING ELEMENT
A plant for producing a structured cross-channel packing element. The structured cross-channel packing element comprises at least two adjacent layers made of expanded metal sheets each comprising periodic deformations. The plant comprises a stretching machine configured to cut and stretch a metal sheet to form one of a plurality of first expanded metal sheets, a calibration machine configured to roll the first expanded metal sheets to a desired thickness, a sheet storage unit configured to directly receive each of the first expanded metal sheets rolled in the calibration machine, a forming machine configured to form each of the first expanded metal sheets to form the expanded metal sheets comprising periodic deformations, and a stacking machine configured to stack the expanded metal sheets comprising periodic deformations to form the structured cross-channel packing element. The sheet storage unit is configured to release the first expanded metal sheets directly to the forming machine.
B21D 43/06 - Avancement du matériau en fonction du mouvement de la matrice ou de l'outil au moyen d'un élément mécanique coopérant avec le matériau au moyen de pièces de liaison mâles ou femelles s'engageant dans des parties correspondantes de la tôle ou de la pièce analogue à travailler, p.ex. au moyen de boulons de support ou de section rainurée dans les supports
B21D 43/08 - Avancement du matériau en fonction du mouvement de la matrice ou de l'outil au moyen d'un élément mécanique coopérant avec le matériau au moyen de rouleaux
B21D 43/28 - Association de dispositifs de coupe avec des dispositifs d'alimentation, d'alignement ou de stockage
6.
GAS TO HYDROGEN PROCESS WITH CO-PRODUCTION OF CARBON
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.
A rotary pressure exchanger includes a housing and a rotor mounted within the housing for rotation about an axis of rotation defining an axial direction. The rotor extends from a first rotor end in the axial direction to a second rotor end, a plurality of channels is inside the rotor for transferring pressure from the first fluid to the second fluid, and each channel extends parallel to the axis of rotation. The plurality of channels includes a set of first channels and a set of second channels, and the rotor includes a divider arranged between the first rotor end and the second rotor end for separating the first channels from the second channels, Each first channel extends from the first rotor end in the axial direction to the divider, and each second channel extends from the second rotor end in the axial direction to the divider.
F04F 13/00 - POMPAGE DE FLUIDE PAR CONTACT DIRECT AVEC UN AUTRE FLUIDE OU PAR UTILISATION DE L'INERTIE DU FLUIDE À POMPER; SIPHONS Échangeurs de pression
8.
METHOD AND PLANT FOR PURIFYING A FATTY ACID ISOPROPYL ESTER AND FOR PRODUCING PURE FATTY ACID ISOPROPYL ESTER
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.
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
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).
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 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
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.
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
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
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).
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
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.
C01B 3/00 - Hydrogène; Mélanges gazeux contenant de l'hydrogène; Séparation de l'hydrogène à partir de mélanges en contenant; Purification de l'hydrogène
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
A centrifugal pump includes a pump housing having a suspension inlet and a suspension outlet and a flow channel between the inlet and the outlet, a shaft mounted by bearings for rotation about a center axis, an impeller which is rotatable by the shaft, in alignment with the inlet and arranged to be rotated about the axis in the flow channel, and gas collecting openings for gas removal arranged in the flow channel. The inlet end of the flow channel includes a number of static vanes comprising gas collecting openings, the vanes extend radially from an inner wall of the flow channel toward the center of the flow channel and are upstream of the impeller.
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.
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
18.
A METHOD FOR CONTROLLING OF A PUMP UNIT AND A PUMP UNIT FOR PUMPING LIQUID OR SUSPENSION
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.
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
19.
MULTISTAGE LIQUID DISTRIBUTOR FOR A SEPARATION DEVICE COMPRISING A DUAL-TROUGH PRE-DISTRIBUTOR
A liquid distributor for a separation device is provided. The liquid distributor comprises at least one pre-distributor member positioned above a plurality of distributor members. The at least one pre-distributor member comprises at least two troughs each comprising a plurality of discharge openings. Each two of the at least two troughs are connected with each other, and a first trough has an overflow portion and at least one deflector attached to the overflow portion or a side wall of the first trough. A second trough has an upper edge. If a liquid level in the first trough reaches the overflow portion, the at least one deflector extends from above the upper edge of the second trough to the second trough so that liquid flows into the second trough from the first trough over the overflow portion or the side wall and the at least one deflector.
An energy storage system includes a vessel, an energy conversion device, and a connection line connecting the vessel with the energy conversion device. The energy conversion device includes a housing, a pump turbine, and a motor generator. The pump turbine includes a first shaft, and an impeller. The motor generator includes a second shaft, and a rotor. The second shaft is coupled to the first shaft to transmit torque between the first shaft and the second shaft. The connection line connects a low pressure opening with an opening disposed at the vessel to receive water from the vessel or discharge water into the vessel. The connection line includes a switching unit with a shut-off device and a non-return device connected in parallel, the non-return device enabling flow of the water only in a first direction from the vessel to the low pressure opening.
A rotary pressure exchanger includes a housing and a rotor. Channels are inside the rotor to transfer pressure from a first fluid to a second fluid. Each channel extends parallel to the axis of rotation, and the housing includes a first inlet port for supplying the first fluid to the channels, a first outlet port for discharging the first fluid from the channels, a second inlet port for suppling the second fluid to the channels, and a second outlet port for discharging the second fluid from the channels. The first and second inlet ports are radial inlet ports, such that the first fluid and the second fluid enter the rotor in a radial direction perpendicular to the axial direction, and the first outlet port and the second outlet port are radial outlet ports, such that the first fluid and the second fluid leave the rotor in the radial direction.
F04F 13/00 - POMPAGE DE FLUIDE PAR CONTACT DIRECT AVEC UN AUTRE FLUIDE OU PAR UTILISATION DE L'INERTIE DU FLUIDE À POMPER; SIPHONS Échangeurs de pression
22.
PROCESS AND APPARATUS FOR PREPARING PURIFIED STYRENE COMPOSITION USING DIVIDED-WALL COLUMN AND CRYSTALLIZATION UNIT
A method for preparing a purified styrene composition includes providing a crude hydrocarbon composition containing styrene, subjecting the crude hydrocarbon composition to a distillation in a divided-wall column to produce an overhead hydrocarbon stream, a bottom hydrocarbon stream and a side hydrocarbon stream and subjecting the side hydrocarbon stream to at least one crystallization step to obtain a purified styrene composition.
A structured packing bed for a column is provided. The structured packing bed comprises at least two layers stacked vertically above each other, and at least two of the layers each comprise 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. At least 50% of the structured cross-channel packing elements are a block comprising a plurality of sheets with periodic deformations. The sheets are arranged in a longitudinal direction parallel and in touching contact with each other such that an open space is provided between them. Adjacent sheets are oriented such that their deformations intersect in crisscross fashion with each other, and a structured cross-channel packing element of a layer is rotated with regard to a structured cross-channel packing element of an adjacent layer by 70 to 110°.
F28D 9/00 - Appareils échangeurs de chaleur comportant des ensembles de canalisations fixes en forme de plaques ou de laminés pour les deux sources de potentiel calorifique, ces sources étant en contact chacune avec un côté de la paroi d'une canalisation
F28D 21/00 - Appareils échangeurs de chaleur non couverts par l'un des groupes
F28F 3/02 - Eléments ou leurs ensembles avec moyens pour augmenter la surface de transfert de chaleur, p.ex. avec des ailettes, avec des évidements, avec des ondulations
Wastewater treatment apparatus, namely, clarification,
filtration, separation and thickening machines used for
treatment of liquids in the form of wastewater and
industrial water; installation of wastewater treatment for
aeration and circulation of waste water; membrane
bioreactors for wastewater treatment; wastewater filtering
apparatus; sludge dewatering apparatus; belt filter presses
for wastewater treatment; flocculator for wastewater
treatment; pressure-relief flotation units for wastewater
treatment.
25.
A PLANT AND AN EFFICIENT PROCESS FOR PRODUCING POLYLACTIC ACID USING LACTIDE OBTAINED FROM POLYLACTIC ACID DEVOLATILIZATION
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).
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).
A pumping arrangement includes first and second multistage pumps. Each pump includes a housing with a pump unit, the housing includes a pump inlet and a pump outlet, the pump unit includes a plurality of impellers to convey fluid from the pump inlet to the pump outlet, and a pump shaft extending from a drive end to a non-drive end, each impeller mounted to the pump shaft. The second multistage pump includes a first mechanical seal having a process side facing the pump unit. The pump outlet of the first multistage pump connected to the pump inlet of the second multistage pump, so that the first multistage pump and the second multistage pump are arranged in series. The process side of the first mechanical seal of the second multiphase pump is in fluid communication with the pump inlet of the first multistage pump.
A process for preparing a purified benzene composition from a crude hydrocarbon stream containing at least 10% by volume of benzene is provided. The process comprises subjecting the crude hydrocarbon stream and a further recycled benzene containing stream to a solvent-based extraction so as to produce a benzene enriched aromatic stream and a benzene depleted non-aromatic stream, subjecting the benzene enriched aromatic stream to a hydrodesulfurization so as to obtain a desulfurized aromatic stream, subjecting the desulfurized aromatic stream to a distillation producing 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 at least partially recycling the further benzene containing stream.
C07C 7/00 - Purification, séparation ou stabilisation d'hydrocarbures; Emploi d'additifs
C07C 7/10 - Purification, séparation ou stabilisation d'hydrocarbures; Emploi d'additifs par extraction, c. à d. purification ou séparation d'hydrocarbures liquides à l'aide de liquides
C07C 7/17 - Purification, séparation ou stabilisation d'hydrocarbures; Emploi d'additifs par traitement provoquant une modification chimique d'au moins un composé avec les oxydes du soufre ou avec des acides
C07C 7/08 - Purification, séparation ou stabilisation d'hydrocarbures; Emploi d'additifs par distillation à l'aide de composés auxiliaires extractive
09 - Appareils et instruments scientifiques et électriques
11 - Appareils de contrôle de l'environnement
Produits et services
Chemical apparatus and instruments, particularly for the exchange of materials and heat Distillation, rectification, absorption, desorption and extraction columns, heat and material exchanging devices, filler bodies, bases, structured linings, distributors and incorporated parts for heat and material exchanging devices as well as for the aforesaid columns
30.
A METHOD AND PLANT FOR ENERGY EFFICIENTLY PRODUCING N-HEXANE AND ISOMERATE HAVING A HIGH OCTANE NUMBER
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.
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
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).
A rotary pump for conveying a fluid, includes a pump housing, a pump shaft, a hydraulic unit, a mechanical seal, and a stator. The hydraulic unit conveys and pressurizes the fluid, includes an impeller fixedly mounted on the pump shaft, and during operation generates an axial thrust to act on the pump shaft. The mechanical seal seals the pump shaft and includes a rotor connected to the pump shaft in a torque proof manner. The stator is stationary with respect to the pump housing. The mechanical seal is arranged between the hydraulic unit and an end of the pump shaft, and is a balancing device configured to generate an axial force on the pump shaft during operation, with the axial force configured to counteract the axial thrust.
09 - Appareils et instruments scientifiques et électriques
Produits et services
Mixing devices (machines), in particular static mixers;
static mixers for low-viscosity or gaseous fluids; static
mixers for homogenising, dispersing, emulsifying and
suspending fluid substances; static mixers for incorporating
gases, gas-liquid mixtures or liquids in a gaseous stream;
static mixers for turbulent streams; static mixers for flue
gas purification and for flue gas purification
installations; static mixers for mass transfer; mixing
elements, components, accessories and spare parts for the
aforesaid devices, not included in other classes. Chemistry apparatus and instruments, in particular static
mixers; chemistry apparatus and instruments, in particular
static mixers for the addition of additives, dilution of
concentrations, pH-adjustment, flocculation, neutralization
of substances in fluids for temperture homogenisation.
34.
METHOD FOR MANUFACTURING A PROPELLER FOR A PROPELLER PUMP, AND PROPELLER FOR A PROPELLER PUMP
A method for manufacturing a propeller for a propeller pump includes providing a base propeller including a hub extending from an axial end in the axial direction, and a plurality of blades fixedly connected to the hub, each blade including a pressure side, a suction side, a leading edge, an initial trailing edge, and a blade tip extending from the leading edge to the initial trailing edge at the end of the blade facing away from the hub, trimming each of the blades of the base propeller the axial direction, and forming a modified trailing edge bye removing a part of the initial trailing edge along the entire pressure side from the hub to the blade tip.
F04D 13/08 - Ensembles comprenant les pompes et leurs moyens d'entraînement la pompe étant entraînée par l'électricité pour utilisation en position immergée
35.
SEPARATING DEVICE AND METHOD OF OPERATING SUCH A SEPARATING DEVICE
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).
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.
An apparatus for supplying and dissipating heat, for carrying out reactions and for mixing and dispersing flowing media in a housing with an internal diameter for a medium and comprising internal fittings made up of a bundle of tubes with an external diameter or made up of other elongate elements oriented parallel to the longitudinal axis of the housing is provided. The apparatus includes crosspieces or crosspiece layers installed crosswise between the elongate elements. The crosspieces are inclined in relation to the longitudinal axis of the housing and are not in contact. After axially successive crosspieces, or a length, the crosspieces are installed between the tubes and turned by preferably 90°. A heat-transfer medium can flow in a co-current or counter-current mode. This results in a mixer/heat exchanger or reactor with an extremely large heat-transfer capacity and almost plug flow.
B01F 25/431 - Tubes de mélange droits avec des chicanes ou des obstructions qui ne provoquent pas de chute de pression importante; Chicanes à cet effet
B01F 25/421 - Mélangeurs statiques dans lesquels le mélange est affecté par le déplacement conjoint des composants dans des directions différentes, p.ex. dans des tubes munis de chicanes ou d'obstructions en déplaçant les composants sur une trajectoire convolutée ou labyrinthique
B01F 35/93 - Systèmes de chauffage ou de refroidissement disposés à l'intérieur du récipient
F28D 7/16 - Appareils échangeurs de chaleur comportant des ensembles de canalisations tubulaires fixes pour les deux sources de potentiel calorifique, ces sources étant en contact chacune avec un côté de la paroi d'une canalisation les canalisations étant espacées parallèlement
F28F 1/38 - Eléments tubulaires ou leurs ensembles avec moyens pour augmenter la surface de transfert de chaleur, p.ex. avec des ailettes, avec des saillies, avec des évidements ces moyens étant uniquement à l'extérieur de l'élément tubulaire et étant alternés en quinconce pour former des passages tortueux pour les fluides
F28F 9/013 - Supports auxiliaires pour les éléments pour les tubes ou les assemblages de tubes
F28F 9/22 - Dispositions pour diriger les sources de potentiel calorifique dans des compartiments successifs, p.ex. aménagement des plaques de guidage
F28F 9/24 - Dispositions pour favoriser un écoulement turbulent des sources de potentiel calorifique, p.ex. par des plaques
38.
HEAT INTEGRATION VIA HEAT PUMP ON A BOTTOM DIVIDING WALL COLUMN
A dividing wall column system is provided. The dividing wall column system comprises a dividing wall column, a first reboiler, a second reboiler, and a heat pump. The dividing wall column includes a dividing wall positioned in a 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. The first reboiler is outside of the dividing wall column and in fluid communication with the first side of the bottom section of the dividing wall column. The second reboiler is outside of the dividing wall column and in fluid communication with the second side of the bottom section of the dividing wall column. The heat pump is in fluid communication with the dividing wall column and the second reboiler and configured to compress a first portion of an overhead product from the dividing wall column.
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%.
An energy storage system includes a vessel for storing water, an energy conversion device, and a connection line connecting the vessel with the energy conversion device. The energy conversion device includes first and second housings, a pump turbine in the first housing, and a motor generator in the second housing. The pump turbine includes a first shaft and an impeller mounted on the first shaft. The motor generator includes a second shaft and a rotor at the second shaft for rotating relative to a stator. The second shaft is coupled to the first shaft for transmitting torque between the first and second shafts. The connecting line connects a low pressure opening with an opening for receiving water or discharging water. The second housing is filled with a gas for a barrier pressure during operation of the energy conversion device, such that the rotor rotates within the gas.
F15B 13/06 - Dispositifs de distribution ou d'alimentation du fluide caractérisés par leur adaptation à la commande de servomoteurs pour utilisation avec plusieurs servomoteurs
Wastewater treatment apparatus, namely, clarification, filtration, separation and thickening machines used for treatment of liquids in the form of wastewater and industrial water; installation of wastewater treatment for aeration and circulation of waste water; membrane bioreactors for wastewater treatment; wastewater filtering apparatus; sludge dewatering apparatus; belt filter presses for wastewater treatment; flocculator for wastewater treatment; pressure-relief flotation units for wastewater treatment
42.
Process and apparatus for preparing purified styrene composition from styrene containing feedstock
A method for preparing a purified styrene composition with a styrene yield of at least 80%. The method comprises providing a crude composition containing styrene, and subjecting the crude composition to at least one crystallization step. The at least one crystallization step comprises at least one static crystallization stage and at least one dynamic crystallization stage.
C07C 7/14 - Purification, séparation ou stabilisation d'hydrocarbures; Emploi d'additifs par cristallisation; Purification ou séparation des cristaux
C07C 5/03 - Préparation d'hydrocarbures à partir d'hydrocarbures contenant le même nombre d'atomes de carbone par hydrogénation de liaisons doubles carbone-carbone non aromatiques
A method for preparing a purified styrene composition is provided. The method includes providing a crude composition and subjecting the crude composition to at least one crystallization step. The crude composition contains 70% by weight or more styrene based on the total weight of the crude composition. The at least one crystallization step comprises at least one of a static crystallization stage and a dynamic crystallization stage. The crude composition contains at least one impurity selected from the group consisting of: color inducing species, oxygenates, sulfur species, alpha-methylstyrene, and mixtures thereof.
C07C 5/03 - Préparation d'hydrocarbures à partir d'hydrocarbures contenant le même nombre d'atomes de carbone par hydrogénation de liaisons doubles carbone-carbone non aromatiques
C07C 7/00 - Purification, séparation ou stabilisation d'hydrocarbures; Emploi d'additifs
C07C 7/08 - Purification, séparation ou stabilisation d'hydrocarbures; Emploi d'additifs par distillation à l'aide de composés auxiliaires extractive
09 - Appareils et instruments scientifiques et électriques
Produits et services
Mixing machines, in particular static mixers; Mixing machines, namely, static mixers for low-viscosity or gaseous fluids; Mixing machines, namely, static mixers for homogenising, dispersing, emulsifying and suspending fluid substances; Mixing machines, namely, static mixers for incorporating gases, gas-liquid mixtures or liquids in a gaseous stream; Mixing machines, namely, static mixers for turbulent streams; Mixing machines, namely, static mixers for flue gas purification and for flue gas purification installations; Mixing machines, namely, static mixers for mass transfer; Mixing elements, components, accessories and spare parts for the aforesaid devices, namely, pumps for mixing machines, gear drives for mixing machines, spare replacement parts for mixing machines Chemistry laboratory apparatus and instruments, in particular static mixers for scientific purposes; Chemistry laboratory apparatus and instruments, in particular static mixers for the addition of additives, dilution of concentrations, pH-adjustment, flocculation, neutralization of substances in fluids for temperature homogenisation for scientific purposes
45.
Gas to olefins processes with coproduction of hydrogen
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.
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.
C25B 5/00 - Procédés de fabrication de composés dans lesquels de l'électricité est produite simultanément
47.
A PLANT AND PROCESS FOR SEPARATING AN AMMONIA AND CARBON DIOXIDE CONTAINING WASTEWATER STREAM TO A CONCENTRATED AQUEOUS AMMONIA SOLUTION AND A PURIFIED WASTEWATER STREAM
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.
01 - Produits chimiques destinés à l'industrie, aux sciences ainsi qu'à l'agriculture
40 - Traitement de matériaux; recyclage, purification de l'air et traitement de l'eau
Produits et services
Chemical products for use in industry, in particular
chemical additives for treatment of liquids and gases, such
as fuel treatment. Treatment of materials; treatment of liquid hydrocarbons;
fuel treatment services, including removal of sulfur
compounds from diesel; chemical treatment of exhaust gases
from fossil fuel combustion; exhaust gas treatment services,
in particular removal of acid compounds, such as sulfur and
carbon dioxide compounds, exhaust gases; chemical treatment
of exhaust gases from fossil fuel combustion, in particular
removal of acid compounds, such as sulfur compounds and
carbon dioxide, exhaust gases, in particular combustion
gases.
49.
A PLANT AND AN EFFICIENT PROCESS FOR PRODUCING LACTIDE FROM LACTIC ACID
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.
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.
A multistage centrifugal pump for conveying a fluid includes a pump housing with an inlet to receive the fluid and an outlet to discharge the fluid, a first stage impeller and a last stage impeller to convey the fluid from the inlet to the outlet, a shaft to rotate the first stage impeller and the last stage impeller about an axial direction, a suction chamber arranged upstream of the first stage impeller and in fluid communication with the inlet, a recirculation path for the fluid including a return opening and extending from the return opening to the suction chamber, the return opening located at or in the flow path downstream of the first stage impeller and upstream of the last stage impeller, and a flow control rod disposed in the recirculation path, the flow control rod to adjust a recirculation flow through the recirculation path into the suction chamber.
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.
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
53.
PROCESS FOR CONTROLLING OF THE TREATMENT OF WASTE FLUID GENERATED DURING A PETROCHEMICAL PROCESS USING AN INCINERATOR
A process for treating waste fluid generated during a petrochemical process. The process comprises: subjecting 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, subjecting 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, 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. The process is controlled such that incineration of the sixth concentrated organic fluid-based waste fluid stream generates at least 70% of an energy necessary to incinerate the fourth concentrated water-based wastewater stream.
C02F 1/22 - Traitement de l'eau, des eaux résiduaires ou des eaux d'égout par congélation
C02F 1/04 - Traitement de l'eau, des eaux résiduaires ou des eaux d'égout par chauffage par distillation ou évaporation
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
54.
PLACE AND COST EFFICIENT PLANT AND PROCESS FOR SEPARATING ONE OR MORE PURIFIED HYDROCARBON STREAMS FROM CRUDE HYDROCARBON STREAMS, SUCH AS FOR NAPHTHA STABILIZATION AND LPG RECOVERY
A plant for separating at least one purified hydrocarbon stream from at least one crude hydrocarbon feed stream. The plant comprises a vessel with a single foundation. The vessel comprises an absorber section and a first divided-wall column. The first divided-wall column comprises a dividing wall, a stripper section, and a stabilization section.
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.
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
B01J 23/02 - Catalyseurs contenant des métaux, oxydes ou hydroxydes métalliques non prévus dans le groupe des métaux alcalins ou alcalino-terreux ou du béryllium
01 - Produits chimiques destinés à l'industrie, aux sciences ainsi qu'à l'agriculture
40 - Traitement de matériaux; recyclage, purification de l'air et traitement de l'eau
Produits et services
Chemical products for use in industry, in particular chemical additives for treatment of liquids and gases, such as fuel treatment Treatment of materials in the nature of fuel, hydrocarbons, exhaust gases, processing plant gases; treatment of liquid hydrocarbons; fuel treatment services, including removal of sulfur compounds from diesel; chemical treatment of exhaust gases from fossil fuel combustion; exhaust gas treatment services, in particular removal of acid compounds, such as sulfur and carbon dioxide compounds, exhaust gases; chemical treatment of exhaust gases from fossil fuel combustion, in particular removal of acid compounds, such as sulfur compounds and carbon dioxide, exhaust gases, in particular combustion gases
57.
PUMP ARRANGEMENT FOR PUMPING BARRIER LIQUID AND A MECHANICAL SHAFT SEAL
A pump arrangement for pumping barrier liquid in a sealed space of a mechanical shaft seal includes a housing assemblable in connection with a rotatable shaft of a device to be sealed by the mechanical shaft seal. The housing includes a pumping element, which is configured to be in force transmission connection with the rotatable shaft to provide power to operate the pumping element when in use.
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
58.
A BALANCING DRUM ASSEMBLY IN A CENTRIFUGAL PUMP AND METHOD OF OPERATING A BALANCING DRUM ASSEMBLY
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).
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.
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
B01J 35/00 - Catalyseurs caractérisés par leur forme ou leurs propriétés physiques, en général
B01J 29/40 - Zéolites aluminosilicates cristallines; Leurs composés isomorphes du type pentasil, p.ex. types ZSM-5, ZSM-8 ou ZSM-11
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.
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
B01J 29/70 - Zéolites aluminosilicates cristallines; Leurs composés isomorphes de types caractérisés par leur structure spécifique non prévus dans les groupes
B01J 35/10 - Catalyseurs caractérisés par leur forme ou leurs propriétés physiques, en général solides caractérisés par leurs propriétés de surface ou leur porosité
B01J 37/10 - Traitement thermique en présence d'eau, p.ex. de vapeur d'eau
B01J 37/00 - Procédés de préparation des catalyseurs, en général; Procédés d'activation des catalyseurs, en général
B01J 37/02 - Imprégnation, revêtement ou précipitation
B01J 35/00 - Catalyseurs caractérisés par leur forme ou leurs propriétés physiques, en général
A component of a rotary machine extends to an axial direction and a radial direction vertical thereto, and has an inner channel, extending from a first end of a core of a center of the component and to a second end at a radial limiting surface of the component and which is at least partially closed. A blank includes the core of the component and is limited by an outer surface in the radial direction. The blank is subtractively processed in a first subtractive process step, such that an outer contour is elaborated in the area of the outer surface, which extends in the radial direction, and a part of the channel is manufactured, which radially extends in the blank to the first end. The channel is formed by a build-up process on the blank.
B23P 15/00 - Fabrication d'objets déterminés par des opérations non couvertes par une seule autre sous-classe ou un groupe de la présente sous-classe
B23P 15/04 - Fabrication d'objets déterminés par des opérations non couvertes par une seule autre sous-classe ou un groupe de la présente sous-classe d'aubes de turbine ou d'organes équivalents, en plusieurs pièces
B22F 5/00 - Fabrication de pièces ou d'objets à partir de poudres métalliques caractérisée par la forme particulière du produit à réaliser
B23K 9/04 - Soudage pour d'autres buts que l'assemblage de pièces, p.ex. soudage de rechargement
F01D 5/04 - Organes de support des aubes, p.ex. rotors pour "machines" ou machines à flux radial
F04D 29/22 - Rotors spécialement pour les pompes centrifuges
F04D 29/28 - Rotors spécialement adaptés aux fluides compressibles pour pompes centrifuges ou hélicocentrifuges
B23K 9/173 - Soudage ou découpage à l'arc utilisant des gaz de protection et une électrode consommable
B22F 10/80 - Acquisition ou traitement des données
B23P 6/00 - Remise en état ou réparation des objets
F01D 5/00 - Aubes; Organes de support des aubes; Dispositifs de chauffage, de protection contre l'échauffement, de refroidissement, ou dispositifs contre les vibrations, portés par les aubes ou les organes de support
A debris trap for capturing debris flowing in a stream of liquid, the debris trap includes a housing, a fluid inlet channel in connection with a space in the housing, a fluid outlet channel in connection with the space, the fluid outlet channel comprising a fluid outlet port, a float member, a guide element configured to guide movement of the float member when a liquid level in the space changes when in use, a stopper in connection with the fluid outlet port configured to stop the movement of the float member when the liquid level in the space raises, the fluid outlet port which, when the float member is against the stopper, remains partially open and the float member, when brought against the stopper, form a fluid communication path with a reduced area, which restricts the size of the debris capable of flowing through the outlet port.
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.
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).
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
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).
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 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
66.
A PROCESS OF CONTINUOUSLY MANUFACTURING A POLY(HYDROXY ACID) COPOLYMER WITH TUNABLE MOLECULAR WEIGHT, STRUCTURE AND COMPOSITION
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.
A process for purifying a crude composition comprising rectifying the crude composition in a rectification plant. The rectification plant comprises a rectification column including: a first overhead condenser for condensing a head fraction, and a reboiler for evaporating a bottom fraction. A difference between a temperature of the head fraction and a temperature of the bottom fraction is less than or equal to 20° C. A heat pump is provided between the first overhead condenser and the reboiler. The heat pump is an indirect heat pump that is operated with water or methanol as a refrigerant, and the indirect heat pump includes an expansion valve and a compressor. The heat pump comprises a second condenser located upstream of the compressor.
A sensing arrangement for sensing a physical parameter inside a closed container transmits data through the container wall to the outside of the container. The sensing arrangement includes an inside circuit inside the container and further includes an outside circuit outside the container. The inside circuit includes a transmitter circuit configured to create a controller output signal that characterizes information to be transmitted, such as sensor information. A first inside piezoelectric transducer of the transmitter circuit creates an acoustic data signal based on the controller output signal and transmits the acoustic data signal through the wall of the container to a first outside piezoelectric transducer of the controller outside circuit. The controller output signal and/or the data signal do not contain sensor information in the amplitude or phase or frequency of the controller output signal and/or the data signal. The controller output signal is preferably pulse width modulated.
A method of operating a sealing monitoring system for a seal of a rotatable shaft including a flushing liquid system, the seal disposed between the rotatable shaft and a stationary housing. The sealing monitoring system includes a liquid detector to detect a presence of a flushing liquid in the flushing liquid system. The method includes detecting the flushing liquid presence status in the flushing liquid system with the liquid detector, and when the flushing liquid presence status is affirmative, transmitting the flushing liquid presence status for processing using a wireless data communication system with a first data transmission interval between the transmissions, and when the flushing liquid presence status is negative, transmitting the flushing liquid presence status for processing using the wireless data communication system with a second data transmission interval being shorter than the first transmission interval between the transmissions.
G01M 3/04 - Examen de l'étanchéité des structures ou ouvrages vis-à-vis d'un fluide par utilisation d'un fluide ou en faisant le vide par détection de la présence du fluide à l'emplacement de la fuite
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
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.
A tube-bundle heat exchanger includes built-in elements formed by deflection surfaces, windows and directing sections. The product flows in the outer chamber of a tube-bundle heat exchanger with an inlet and an outlet for the product and an inlet and an outlet for the heat carrier medium in the tubes. The deflection panels including the tube-bundle heat exchanger are modified such that they leave windows open and a directing section is attached on the inlet side and the outlet side of the deflection surface. These directing sections run parallel to the tube axes and cross one another. The flow is divided by the direction sections on the inlet side and directed to the windows in opposing directions, where it then exits on respective opposing sides of the outlet sections and is deflected.
F28D 7/16 - Appareils échangeurs de chaleur comportant des ensembles de canalisations tubulaires fixes pour les deux sources de potentiel calorifique, ces sources étant en contact chacune avec un côté de la paroi d'une canalisation les canalisations étant espacées parallèlement
A dividing wall column system for producing hexane includes a dividing wall column including a dividing wall that divides the dividing wall column at least partially into a first side and a second side, with one side of the first and second sides configured to operate as a deisohexanizer column and the other side of the first and second side configured to operate as a hexane column to produce hexane.
C07C 7/04 - Purification, séparation ou stabilisation d'hydrocarbures; Emploi d'additifs par distillation
C07C 7/163 - Purification, séparation ou stabilisation d'hydrocarbures; Emploi d'additifs par traitement provoquant une modification chimique d'au moins un composé par hydrogénation
C07C 7/00 - Purification, séparation ou stabilisation d'hydrocarbures; Emploi d'additifs
A method for manufacturing a component of a rotary machine, the component extends in an axial direction and a radial direction vertical thereto, and has an inner channel, extending from a first end in a center of the component to a second end at a radial limiting surface of the component and which is partially closed. A blank includes the center of the component and is limited by an outer surface in the radial direction. The maximum dimension of the outer surface in the radial direction is smaller than the dimension of the limiting surface in the radial direction. A first subtractive process step is performed such that a part of the channel is manufactured by a machining process, with the part extending from the first end of the channel to the outer surface of the blank. Afterwards the channel is finished by a build-up process on the blank.
B23K 9/04 - Soudage pour d'autres buts que l'assemblage de pièces, p.ex. soudage de rechargement
B23K 9/167 - Soudage ou découpage à l'arc utilisant des gaz de protection et une électrode non consommable
F04D 29/28 - Rotors spécialement adaptés aux fluides compressibles pour pompes centrifuges ou hélicocentrifuges
B33Y 80/00 - Produits obtenus par fabrication additive
B23P 6/00 - Remise en état ou réparation des objets
B23P 15/04 - Fabrication d'objets déterminés par des opérations non couvertes par une seule autre sous-classe ou un groupe de la présente sous-classe d'aubes de turbine ou d'organes équivalents, en plusieurs pièces
F01D 5/04 - Organes de support des aubes, p.ex. rotors pour "machines" ou machines à flux radial
F04D 29/22 - Rotors spécialement pour les pompes centrifuges
B22F 7/08 - Fabrication de couches composites, de pièces ou d'objets à base de poudres métalliques, par frittage avec ou sans compactage de pièces ou objets composés de parties différentes, p.ex. pour former des outils à embouts rapportés avec une ou plusieurs parties non faites à partir de poudre
A rotary pump includes a balance drum connected to a pump shaft between a hydraulic unit and the pump shaft, an axial relief passage between a balance drum and a stationary part stationary relative to a pump housing, and a balancing device arranged between the balance drum and the hydraulic unit, the balancing device including a ring-shaped rotary part connected to the pump shaft, and a ring-shaped non-rotary part movable only in the axial direction, the rotary part having an axial face facing the hydraulic unit, the rotary part and the non-rotary part overlap in a radial direction, which is perpendicular to the axial direction, and the non-rotary part movable in the axial direction such that a radial relief passage is open during operation of the pump, with the radial relief passage extending in the radial direction between the rotary part and the non-rotary part.
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.
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
A process fluid lubricated pump includes a housing with an inlet to receive the fluid, and an outlet to discharge the fluid, a shaft extending from a drive end to a non-drive end and rotatable about an axial direction, the drive end of the shaft arranged outside the housing, a hydraulic unit including impellers mounted on the shaft, a collection chamber to collect leaking process fluid, the collection chamber comprising an exit, through which the shaft passes, and an exit to discharge the process fluid, and a throttle device arranged between the hydraulic unit and the collection chamber, the throttle device comprising a stationary throttle part having first and second axial faces delimiting the stationary throttle part, the first axial face facing the collection chamber, and the throttle device including a throttle gap surrounding the shaft and extending from the first axial face to the second axial face.
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 1/08 - Pompes multiétagées les étages étant concentriques
F16C 17/02 - Paliers à contact lisse pour mouvement de rotation exclusivement pour charges radiales uniquement
F16C 17/08 - Paliers à contact lisse pour mouvement de rotation exclusivement pour charges axiales uniquement pour porter la partie extrême d'un arbre ou d'un autre organe, p.ex. crapaudines
F16C 17/14 - Paliers à contact lisse pour mouvement de rotation exclusivement caractérisés par des particularités sans rapport avec la direction de la charge spécialement adaptés au fonctionnement dans l'eau
09 - Appareils et instruments scientifiques et électriques
Produits et services
Mixing devices (machines), in particular static mixers;
static mixers for low-viscosity or gaseous fluids; static
mixers for homogenising, dispersing, emulsifying and
suspending fluid substances; static mixers for incorporating
gases, gas-liquid mixtures or liquids in a gaseous stream;
static mixers for turbulent streams; static mixers for flue
gas purification and for flue gas purification
installations; static mixers for mass transfer; mixing
elements, components, accessories and spare parts for the
aforesaid devices, not included in other classes. Chemistry apparatus and instruments, in particular static
mixers; chemistry apparatus and instruments, in particular
static mixers for the addition of additives, dilution of
concentrations, pH-adjustment, flocculation, neutralization
of substances in fluids for temperture homogenisation.
80.
FILTER ELEMENT FOR FILTER DISC COMPRISING ELEVATED RESTRICTION EDGES
In a filter element for use in a filter disc, a plurality of filter elements are arranged on a rotor shaft in a manner allowing liquid communication between the inside of the filter elements and the inside of the rotor shaft. The filter element has at least one passage in an edge structure for liquid communication between the inside of adjacent filter elements when the filter elements are assembled forming a filter disc. The passage has an elevated retention edge extending along at least one edge of the passage. Transportation of particles between filter elements in a disc filter is thereby minimized.
37 - Services de construction; extraction minière; installation et réparation
42 - Services scientifiques, technologiques et industriels, recherche et conception
Produits et services
Polymerization installations not for medical or dental purposes, namely, air cooling apparatus, cooling installations for water and air and cooling machines being cooling apparatus for water and air, distillation columns not for scientific use, drying apparatus for chemical processing and drying installations comprised of drying apparatus for chemical processing, evaporators for chemical processing, furnaces, heat exchangers, other than parts of machines, heating apparatus for water and air, heating installations, regulating accessories for water supply in the nature of metered valves, regulating and safety accessories for gas apparatus in the nature of metered valves, pressure regulators for gas pipes and lines, flashback arrectors, and reverse flow check valves, regulating and safety accessories for gas pipes in the nature of pressure regulators for gas pipes and lines, regulating and safety accessories for water apparatus being water supply in the nature of metered valves, safety accessories in the nature of metered valves for water or gas apparatus being water and gas supply and gas pipes, and ventilation installations and apparatus, namely, ventilation hoods and ventilating fans for industrial purposes Maintenance of chemical installations, particularly of polymerization installations being air cooling apparatus, cooling installations and machines, distillation columns, drying apparatus and installations, evaporators, furnaces, heat exchangers, other than parts of machines, heating apparatus, heating installations, regulating accessories for water or gas apparatus and pipes, regulating and safety accessories for gas apparatus, regulating and safety accessories for gas pipes, regulating and safety accessories for water apparatus, safety accessories for water or gas apparatus and pipes, and ventilation installations and apparatus; construction of chemical plants and polymerization installations being air cooling apparatus, cooling installations and machines, distillation columns, drying apparatus and installations, evaporators, furnaces, heat exchangers, other than parts of machines, heating apparatus, heating installations, regulating accessories for water or gas apparatus and pipes, regulating and safety accessories for gas apparatus, regulating and safety accessories for gas pipes, regulating and safety accessories for water apparatus, safety accessories for water or gas apparatus and pipes, and ventilation installations and apparatus Engineering services, particularly design of chemical plants and polymerization installations; industrial research in the field of process engineering, particularly in relation to polymerization processes
82.
A MULTISTAGE LIQUID DISTRIBUTOR FOR A SEPARATION DEVICE COMPRISING A DUAL-TROUGH PRE-DISTRIBUTOR
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.
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.
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
01 - Produits chimiques destinés à l'industrie, aux sciences ainsi qu'à l'agriculture
40 - Traitement de matériaux; recyclage, purification de l'air et traitement de l'eau
42 - Services scientifiques, technologiques et industriels, recherche et conception
Produits et services
Chemical products for use in industry, science, photography,
as well as in agriculture, horticulture and forestry;
polymers; biosourced polymers composed of cyclic esters;
cyclic esters. Treatment of materials and conversion of materials;
manufacture of cyclic compounds, manufacture of cyclic
esters, manufacture of polymers; manufacture of biosourced
polymers; polymerization. Engineering services, particularly in the field of planning
and construction of chemical plants.
85.
A PROCESS AND APPARATUS FOR PREPARING A PURIFIED STYRENE COMPOSITION USING A DIVIDED-WALL COLUMN AND A CRYSTALLIZATION UNIT
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.
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
C07C 15/46 - Styrène; Styrènes alkylés sur le cycle
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
09 - Appareils et instruments scientifiques et électriques
Produits et services
Mixing machines, in particular static mixers for industrial purposes; mixing machines, namely, static mixers for low-viscosity or gaseous fluids for industrial purposes; mixing machines, namely, static mixers for homogenising, dispersing, emulsifying and suspending fluid substances for industrial purposes; mixing machines, namely, static mixers for incorporating gases, gas-liquid mixtures or liquids in a gaseous stream for industrial purposes; mixing machines, namely, static mixers for turbulent streams for industrial purposes; mixing machines, namely, static mixers for flue gas purification and for flue gas purification installations for industrial purposes; mixing machines, namely, static mixers for mass transfer for industrial purposes; mixing elements, components, accessories and spare parts for the aforesaid devices, namely, beaters for mixing machines, gear drives for mixing machines, fluid pumps for mixing machines, mixing shafts for mixing machines, mixing plates for mixing machines, retaining rods for mixing machines, tubing for mixing machines Chemistry laboratory apparatus and instruments, in particular static mixers for a scientific purpose; chemistry laboratory apparatus and instruments, in particular static mixers for the addition of additives, dilution of concentrations, pH-adjustment, flocculation, neutralization of substances in fluids for temperature homogenization for scientific purposes
01 - Produits chimiques destinés à l'industrie, aux sciences ainsi qu'à l'agriculture
40 - Traitement de matériaux; recyclage, purification de l'air et traitement de l'eau
42 - Services scientifiques, technologiques et industriels, recherche et conception
Produits et services
Chemical products for use in industry, science, photography,
as well as in agriculture, horticulture and forestry;
chemical substances; processing solvents; solvent for
extraction; solvents used for degumming; solvents used for
paints; solvents used in paints; solvents used in adhesives;
solvent for synthesis; solvent as a fuel additive; solvent
for the cosmetic industry; chemical additives; styrene;
recycled chemical substances; recycled chemical additives;
recycled styrene. Treatment of materials; recycling of waste and trash
components, in particular recycling of raw materials,
chemicals or chemical substances from waste and trash;
treatment (purification) of raw materials, chemicals or
chemical substances recovered from waste and trash. Engineering services, in particular planning and
construction of chemical plants.
91.
A PROCESS AND PLANT FOR PREPARING A PURIFIED BENZENE COMPOSITION FROM A CRUDE HYDROCARBON STREAM CONTAINING BENZENE
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).
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
92.
APPARATUS FOR SUPPLYING OR DISSIPATING HEAT, FOR CARRYING OUT REACTIONS AND FOR MIXING AND DISPERSING FLOWING MEDIA
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.
01 - Produits chimiques destinés à l'industrie, aux sciences ainsi qu'à l'agriculture
11 - Appareils de contrôle de l'environnement
40 - Traitement de matériaux; recyclage, purification de l'air et traitement de l'eau
42 - Services scientifiques, technologiques et industriels, recherche et conception
Produits et services
Chemical products for use in industry, science, photography,
as well as in agriculture, horticulture and forestry;
polymers; biosourced polymers; polylactides. Polymerization installations. Treatment of materials and conversion of materials;
manufacture of polymers; manufacture of biosourced
polymers; manufacture of polylactides; polymerization. Engineering services, particularly in the field of planning
and construction of chemical plants; planning and design of
chemical plants for polymer manufacture.
94.
STRUCTURED PACKING BED FOR HIGH PRESSURE MASS TRANSFER AND/OR HEAT EXCHANGE APPLICATIONS
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°.
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
01 - Produits chimiques destinés à l'industrie, aux sciences ainsi qu'à l'agriculture
40 - Traitement de matériaux; recyclage, purification de l'air et traitement de l'eau
42 - Services scientifiques, technologiques et industriels, recherche et conception
Produits et services
Chemical products for use in industry, science, photography, as well as in agriculture, horticulture and forestry, namely, chemicals used in industry, chemical preparations for use in photography, chemical preparations for use in agriculture, horticulture and forestry, except fungicides, herbicides, insecticides and parasiticides; polymers, namely, unprocessed polymers, bioplastics, and biopolymers used in the manufacture, packaging, and transport of consumer goods; polymers, biopolymers, polymeric additives and biopolymeric additives for use in the manufacture of industrial products, consumer and household products, sealants or packaging; biosourced polymers composed of cyclic esters, namely, unprocessed polymers, biopolymers used in the manufacture, packaging, and transport of consumer goods; chemical and biochemical preparations for scientific and research purposes, namely, cyclic esters Treatment of materials and conversion of materials, namely, the treatment of materials by the addition of polymer and biopolymer additives; custom manufacture of cyclic compounds, cyclic esters, and polymers; custom manufacture of biosourced polymers, bioplastics, and biopolymers; polymerization services, namely, the chemical combination of monomers to create polymers and biopolymers, the chemical synthesis of polylactic acid and other polymers Engineering services, particularly in the field of planning and construction of chemical plants
97.
HEAT INTEGRATION VIA HEAT PUMP ON A BOTTOM DIVIDING WALL COLUMN
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.
A multistage centrifugal pump for conveying a fluid includes a pump housing, two first stage impellers, a last stage impeller and a shaft. The two first stage impellers and the last stage impeller convey the fluid from a housing inlet to a housing outlet. The shaft rotates each impeller about an axial direction, each impeller comprising a suction side to receive the fluid and a discharge side to discharge the fluid. The last stage impeller is a double suction impeller, having a first suction side and a second suction side, and the last stage impeller is arranged between the two first stage impellers with respect to the axial direction. Each impeller of the two first stage impellers is arranged with the suction side of a respective first stage impeller facing one of the first and second suction sides of the last stage impeller.
A multiphase pump for conveying a multiphase process fluid includes a pump housing, a stationary diffuser, a rotor and swirl brake. The rotor is arranged in the pump housing and is rotatable about an axial direction, the rotor including a pump shaft and an impeller fixedly mounted on the pump shaft. The stationary diffuser is arranged adjacent to and downstream of the impeller. The impeller includes a blade with the blade having a radially outer tip, and a ring surrounding the impeller and arranged at the radially outer tip of the blade. A passage is between the ring and a stationary part configured to be stationary with respect to the pump housing, the passage extending in the axial direction from an entrance to a discharge. The swirl brake is disposed at the passage, and configured and arranged to brake swirling of the process fluid passing through the passage.
01 - Produits chimiques destinés à l'industrie, aux sciences ainsi qu'à l'agriculture
40 - Traitement de matériaux; recyclage, purification de l'air et traitement de l'eau
42 - Services scientifiques, technologiques et industriels, recherche et conception
Produits et services
Chemical products for use in industry, science, photography, as well as in agriculture, horticulture and forestry, namely, chemicals used in industry, chemical preparations for use in photography, chemical preparations for use in agriculture, horticulture and forestry, except fungicides, herbicides, insecticides and parasiticides; chemical substances, namely, chemicals for use in industry; processing solvents, namely, solvent type processing composition for use in industry; solvent for extraction, namely solvents for industrial and commercial use, aromatic solvents for industrial and commercial use; degumming preparations for industrial purposes, namely, solvents used for degumming; chemical solvents for use in the manufacture of paints, namely, solvents used for paints other than for thinning paints; chemical solvents for use in the manufacture of paints, namely, solvents used in paints other than for thinning paints; chemical solvents for use in the manufacture of adhesives, namely, solvents used in adhesives, other than for removing adhesives; chemical solvents for use in industry, namely, solvent used for synthesis of polymers and polymeric additives; chemical additives for fuels, namely, solvent as a fuel additive; chemical additives for use in the manufacture of cosmetics, namely, solvent for the cosmetic industry; chemical additives for use in industry; styrene; recycled chemical substances, namely, recycled chemicals for use in industry; recycled styrene Treatment of materials, namely, the treatment and catalytic conversion of oil products and plastic waste to recover high purity aromatics and petrochemicals; recycling of waste and trash components, in particular recycling of raw materials, chemicals and chemical substances from waste and trash; treatment of raw materials, chemicals and chemical substances recovered from waste and trash, namely, treatment of aromatics and petrochemicals Engineering services, in particular planning and construction of chemical plants
