The invention relates to an installation (1) for the production of granular urea, having at least one urea granulator (2), at least one dust scrubber (3), at least one concentrating device (4), and at least one condensation device (5), wherein an exhaust gas flow (6) from the urea granulator (2) can be fed to the dust scrubber (3), wherein the exhaust gas flow (6) is washed in the dust scrubber (3), wherein at least one outflow (7) from the dust scrubber (3) can be fed to the concentrating device (4), wherein the outflow (7) can be concentrated in the concentrating device (4), wherein the vapors (8) created during concentration can be fed, at least in part, to the condensation device (5), and wherein the vapors (8) are at least partially condensed in the condensation device (5). Indicating an installation (1) for the production of granular urea, in which a clogging up of parts of the installation by non-water-soluble substances can be avoided wherever possible, is characterized in that possible deposits of non-water-soluble substances, in particular sulfur, in the condensation device (5) can be removed from the condensation device (5) while it is running.
B01D 53/00 - SÉPARATION Épuration chimique ou biologique des gaz résiduaires, p.ex. gaz d'échappement des moteurs à combustion, fumées, vapeurs, gaz de combustion ou aérosols
C05C 9/00 - Engrais contenant de l'urée ou ses composés
The present invention relates to a reactor and to a method at least for pyrolysis of hydrocarbon-containing fluids at least for production of at least hydrogen-containing fluids, wherein the reactor has a reactor shell and a reactor shaft disposed within the reactor shell, and a reactor lining at least for thermal sealing of the reactor shaft with respect to the reactor shell is disposed between the reactor shell and the reactor shaft, and wherein the reactor shaft has an at least tetragonal geometry in cross section, wherein at least one electrode for generation of thermal energy is disposed on each of two mutually opposite side walls of the reactor shaft.
C01B 3/30 - Production d'hydrogène ou de mélanges gazeux contenant de l'hydrogène par décomposition de composés organiques gazeux ou liquides d'hydrocarbures avec des particules solides mobiles utilisant la technique du lit fluidisé
B01J 8/12 - Procédés chimiques ou physiques en général, conduits en présence de fluides et de particules solides; Appareillage pour de tels procédés avec des particules mobiles se déplaçant par gravité en un flux descendant
B01J 8/42 - Procédés chimiques ou physiques en général, conduits en présence de fluides et de particules solides; Appareillage pour de tels procédés les particules étant fluidisées selon la technique du "lit fluidisé" le lit fluidisé étant soumis à l'action d'un courant électrique ou à des radiations
4.
AIRCRAFT AND METHOD FOR INSPECTING EQUIPMENT IN COKING PLANTS TO DETECT SOURCES OF DEFECTS
The present invention relates to an aircraft and to a method using this aircraft to inspect equipment in coking plants for detecting sources of error. The aircraft has at least one inspection device for inspecting surfaces of the equipment that are to be inspected, and an airspace, distanced from one of the surfaces to be inspected, and at least one transmitting and receiving device for data communication with at least other aircraft or at least one external analysis device for detecting the sources of error. The method comprises converting the detected phototechnical and optical data, in particular 2D data, into a 3D thermal point cloud by means of a conversion unit of the analysis device, in particular by photogrammetry, for generating at least orthophotos or surface textures or 3D models, processing the data detected from chemically reactive, physically reactive and thermographic devices in a comparison unit of the analysis device to determine deviation data, and combining all converted data and all deviation data and further operating data in an evaluation unit of the analysis device to detect sources of error by means of image processing algorithms and/or machine learning algorithms.
A waterborne sound receiver is disclosed, comprising a receiving unit and a decoder. The receiving unit is configured to receive a waterborne sound signal comprising compressed image data having a first resolution and to convert the waterborne sound signal into a data stream. The decoder is configured to decode the data stream as to obtain the compressed image data. The decoder is further configured to upsample the image data as to obtain image data having a second resolution which is higher than the first resolution, wherein the decoder is implemented as a neural network.
H04B 13/02 - Systèmes de transmission dans lesquels le milieu de propagation est constitué par la terre ou une grande masse d'eau la recouvrant, p.ex. télégraphie par le sol
H04N 19/59 - Procédés ou dispositions pour le codage, le décodage, la compression ou la décompression de signaux vidéo numériques utilisant le codage prédictif mettant en œuvre un sous-échantillonnage spatial ou une interpolation spatiale, p.ex. modification de la taille de l’image ou de la résolution
A roller mill for comminuting bulk material, having a first grinding roller and a second grinding roller arranged opposite one another capable of being driven in opposite directions, wherein a grinding gap is formed between the grinding rollers, a floating bearing unit for receiving the first grinding roller and a fixed bearing unit for receiving the second grinding roller, wherein the floating bearing unit has two bearings, each receives one end of the first grinding roller, wherein a plurality of hydraulic actuators is mounted on the floating bearing unit for applying a force to the floating bearing unit, and wherein the bearings of the floating bearing unit are connected to one another via a synchronization device, wherein the synchronization device has a coupling element which, in a coupling position, prevents a relative movement of the bearings and, in a free position, permits a relative movement of the bearings.
The invention relates to a roller press device for milling input material, comprising: a fixedly mounted fixed roller having a roller shaft mounted so as to be at least approximately in a fixed position; a loosely mounted loose roller having a roller shaft that can be arranged in a variable position; a frame supporting at least the fixed roller and optionally also the loose roller; at least one force application unit acting on the loose roller at a force application point; wherein the fixed and loose rollers can be mounted and positioned relative to one another for applying a milling force; wherein the loose roller with the positionally variable roller shaft is mounted so as to pivot about a pivot axis in the manner of a one-sided lever such that the relative position of the loose roller relative to the fixed roller can be defined by said pivot movement, the one-sided lever being formed between the pivot axis and the force application point. This brings about not only advantages in terms of design. Furthermore, the invention relates to a corresponding method for milling input material.
The present invention relates to a method for operating a descending moving bed reactor with flowable granular material, said method comprising the steps of (i) Filling a upper lock-hopper with granular material and/or emptying a lower lock-hopper, (ii) Purging the lock-hoppers with purging gas, (iii) Filling the reaction chamber comprising a descending moving bed from the upper lock-hopper and/or emptying the reaction chamber into the lower lock-hopper, wherein the pressure equalization between the reaction chamber and lock-hopper is achieved with product gas, (iv) optionally Relieving the lock-hoppers and conveying the product gas flow into the product line and (v) Purging the lock-hoppers with purging gas.
B01J 8/12 - Procédés chimiques ou physiques en général, conduits en présence de fluides et de particules solides; Appareillage pour de tels procédés avec des particules mobiles se déplaçant par gravité en un flux descendant
9.
METHOD AND SYSTEM FOR USING THE CARBON OXIDE ARISING IN THE PRODUCTION OF ALUMINIUM
The invention relates to a method for using the carbon oxide arising in the production of aluminium via the electrolytic reduction of aluminium oxide in the melt using at least one anode made of a carbon-containing material, wherein a pyrolytic carbon is used for the production of the at least one anode, wherein a pyrolysis (1) of hydrocarbons, in particular methane or natural gas, is carried out, in which pyrolytic carbon and hydrogen arise, and wherein, according to the invention, the hydrogen (4) arising in the pyrolysis of methane is mixed with carbon dioxide and/or carbon monoxide from the electrolytic production of aluminium in order to generate a gas flow (15) which is supplied for further application. The invention also relates to a system network comprising an electrolysis device (9) for producing aluminium via the electrolytic reduction of aluminium oxide in a melt, wherein the system network also comprises at least one reactor (1) in which pyrolytic carbon and hydrogen are generated via the pyrolysis of hydrocarbons.
The present invention relates to an integrated process containing the following steps (i) pyrolysis of hydrocarbons to carbon and hydrogen, (iia) removal of at least a part of the produced carbon in step (i) and at least partly further processing of said carbon into a carbon containing electrode, (iib) removal of the hydrogen produced in step (i) and at least partly use said hydrogen for providing energy, preferably electric energy or heat, for the electrode production in step (iia). In addition, the present invention relates to a joint plant containing (a) at least one reactor for pyrolysis process, (b) at least one reactor for the production of electrodes for an aluminum process, (c) a power plant and/or at least one gas-fired burner and optionally (d) at least one reactor for the electrolysis for producing aluminum.
The invention relates a method for continuously performing one or more heat-consuming processes, which is characterized in that the at least one heat-consuming process is electrically heated, the maximum temperature in the reaction zone of the heat-consuming process is greater than 500°C, at least 70% of the products of the at least one heat-consuming process are continuously further processed in downstream processes and/or are passed on to a local energy carrier network and the required electrical energy for the at least one heat-consuming process is drawn from an external power grid and from at least one local power source, wherein the at least one local power source is fed at least 50% of its annual energy requirement from at least one local energy carrier network and is fed at most 50% of its annual energy requirement by products from the heat-consuming process, wherein natural gas, naphtha, hydrogen, syngas and/or steam is stored as an energy carrier in the at least one local energy carrier network, wherein the at least one local energy carrier network is fed at least one further product and/or byproduct from at least one further chemical process and wherein the local energy carrier network has a total capacity of at least 5 GWh. The invention also relates to the use of this method as a minute reserve for the public power grid and to the use of local energy carrier networks of chemical sites for the storage of electrical energy.
H02J 3/28 - Dispositions pour l'équilibrage de charge dans un réseau par emmagasinage d'énergie
H02J 3/38 - Dispositions pour l’alimentation en parallèle d’un seul réseau, par plusieurs générateurs, convertisseurs ou transformateurs
H02J 3/14 - Circuits pour réseaux principaux ou de distribution, à courant alternatif pour règler la tension dans des réseaux à courant alternatif par changement d'une caractéristique de la charge du réseau par interruption, ou mise en circuit, des charges du réseau, p.ex. charge équilibrée progressivement
The invention relates to a method for treating an exhaust gas flow (9) arising in a system (7) for producing aluminium via the electrolytic reduction of aluminium oxide in a melt, using at least one anode made of a carbon-containing material, said exhaust gas flow containing carbon oxides due to the reduction of the aluminium oxide by means of the carbon, wherein, according to the invention, at least one sub-flow of the carbon oxide contained in the exhaust gas flow is reacted with hydrogen (23) or mixed with a hydrogen flow and then supplied for utilisation. After a purification and conditioning of the exhaust gas flow in a device (16), e.g. an enrichment with carbon monoxide can then be carried out in a reactor (20) and the syngas obtained in this way can be supplied to a chemical or biotechnological system (25) for the synthesis of valuable chemical substances.
The invention relates to a process for synthesis of methanol, wherein a CO2 stream consisting predominantly of carbon dioxide and an H stream consisting predominantly of hydrogen are supplied to a methanol reactor arrangement for conversion to methanol, wherein a tail gas stream comprising unreacted hydrogen is obtained from the methanol reactor arrangement and wherein the unreacted hydrogen is at least partly recycled to the methanol reactor arrangement. The process is characterized in that the tail gas stream is supplied to a hydrogen recovery arrangement to obtain a return stream comprising the unreacted hydrogen, and in that the molar proportion of hydrogen in the return stream is higher than in the tail gas stream. The invention likewise relates to a corresponding plant for synthesis of methanol.
C07C 29/151 - 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 réduction exclusivement des oxydes de carbone avec de l'hydrogène ou des gaz contenant de l'hydrogène
The invention relates to a reactor (1) for carrying out an endothermic reaction, in particular a high-temperature reaction, in which a product gas (P) is obtained from a feed gas (E), wherein: the reactor (1) surrounds a reactor interior (10); the reactor (1) is configured to provide a reactor bed (120) in a reaction zone (12) of the reactor interior (10), which reactor bed comprises a large number of solid material particles (F); the reactor (1) is also configured to guide the feed gas (E) into the reaction zone (12); in order to heat the feed gas (E), the reactor (1) is designed to heat the solid material particles (F) in the reaction zone (12) such that, by transferring heat from the solid material particles (F) to the feed gas (E), the feed gas (E) in the reaction zone (12) can be heated to a reaction temperature in order to participate as a starting product in the endothermic reaction for producing the product gas (P); and the reactor interior (10) also comprises a first heat integration zone (11) in which heat from the product gas (P) produced in the reaction zone (12) can be transferred to solid material particles (F) of the reactor bed (120) which are to be guided into the reaction zone (12); and the reactor interior (10) also comprises a second heat integration zone (13) in which heat from solid material particles (F) of the reactor bed (12) coming from the reaction zone (12) can be transferred to the feed gas (E) in order to preheat the feed gas (E). The invention also relates to a method in which a reactor (1) according to the invention is used.
C01B 3/00 - Hydrogène; Mélanges gazeux contenant de l'hydrogène; Séparation de l'hydrogène à partir de mélanges en contenant; Purification de l'hydrogène
B01J 8/12 - Procédés chimiques ou physiques en général, conduits en présence de fluides et de particules solides; Appareillage pour de tels procédés avec des particules mobiles se déplaçant par gravité en un flux descendant
15.
ELECTRONIC MODULE, TRANSPORT CONTAINER AND SEA, AIR OR LAND VEHICLE
The invention relates to an electronic module for mobile sea, land and air loading at least comprising the following components: a.) a base frame comprising a main frame and a secondary frame connected to the main frame; b.) a support frame connected to the main frame vertically or at right angles; c.) at least one inner or cross member arranged within the main frame; d.) a switch cabinet, wherein the switch cabinet is connected to the support frame via connection elements; and wherein the switch cabinet is connected to the inner and or cross member and/or main frame via connection elements; an input and control unit arranged on the secondary frame.
B65D 85/68 - Réceptacles, éléments d'emballage ou paquets spécialement adaptés à des objets ou à des matériaux particuliers pour machines, moteurs ou véhicules assemblés ou en pièces détachées
16.
WEAPON HAVING A DEFLAGRATION IGNITER AND METHOD FOR OPERATING SUCH A WEAPON
The present invention relates to a weapon and to a method for operating a weapon of this kind. The weapon comprises an explosive charge, an activatable detonation ignition means, an activatable deflagration ignition means, and an ignition device. The ignition device is able to activate, selectively, the detonation ignition means or the deflagration ignition means. The activated detonation ignition means is able to cause the explosive charge to detonate. The activated deflagration ignition means is able to cause the same explosive charge to deflagrate. According to the method, the ignition device activates the detonation ignition means. The activated detonation ignition means causes the explosive charge to detonate. If a predetermined event takes place without the explosive charge having been previously detonated, the ignition device activates the deflagration ignition means. The activated deflagration ignition means causes the explosive charge to deflagrate.
The present invention relates to a launching device for launching an underwater running body from a platform, in particular from a watercraft, and to a method using such a launching device. The launching device comprises a ramp, which extends along a longitudinal ramp axis, and a propellant deflection unit. The ramp encloses an underwater running body with a propulsion unit under water. The launching device activates the propulsion unit, which then emits a propellant. The propellant deflection unit deflects emitted propellant into an outlet direction. This outlet direction of the propellant is directed perpendicularly or obliquely away from the platform.
The present invention relates to a method for the production of a metal strip (M) coated with a coating (B), said coating (B) containing chromium metal and chromium oxide and being electrolytically deposited from an electrolyte solution (E) that contains a trivalent chromium compound onto the metal strip (M) by bringing the metal strip (M), which is connected as the cathode, into contact with the electrolyte solution (E). An effective deposition of the coating with a high chromium oxide portion is achieved by successively passing the metal strip (M) at a predefined strip travel speed (v) through a plurality of electrolysis tanks (1a to 1h) arranged successively in a strip travel direction, wherein the first electrolysis tank (1a), as viewed in the strip travel direction, or in a front group of electrolysis tanks (1a, 1b), is set to a low current density (j1); a second electrolysis tank (1c), which follows in the strip travel direction, or a middle group of electrolysis tanks (1c-1f), is set to a medium current density (j2); and a last electrolysis tank (1h), as viewed in the strip travel direction, or a rear group of electrolysis tanks (1g, 1h), is set to a high current density (j3), where j1 <= 12 <13 and the low current density (j1) is greater than 20 A/dm2.
C25D 5/14 - Dépôt de plusieurs couches du même métal ou de métaux différents au moins une couche étant du nickel ou du chrome plusieurs couches étant du nickel ou du chrome, p.ex. couches doubles ou triples
C25D 3/06 - Dépôt électrochimique; Bains utilisés à partir de solutions de chrome à partir des solutions de chrome trivalent
The present invention relates to a method for the production of a metal strip (M) coated with a coating (B), said coating (B) containing chromium metal and chromium oxide and being electrolytically deposited from an electrolyte solution (E) that contains a trivalent chromium compound onto the metal strip (M) by bringing the metal strip (M), which is connected as the cathode, during an electrolysis time into contact with the electrolyte solution (E). An efficient deposition of a coating with a high proportion of chromium oxide is obtained by successively passing the metal strip (M) at a predefined strip travel speed (v) through a plurality of electrolysis tanks (1a, 1b, 1c; 1a bis 1h) arranged successively in a strip travel direction, wherein the electrolyte solution (E) in at least the last electrolysis tank (1 c; 1h), as viewed in the strip travel direction, or in a rear group of electrolysis tanks (1g, 1h) has a temperature, averaged across the volume of the electrolysis tank(s), of at most 40°C, and the electrolysis time (tE), during which the metal strip (M) is in electrolytically effective contact with the electrolyte solution (E) in the last electrolysis tank (1c) or in the rear group of electrolysis tanks (1g, 1h) is less than 2.0 seconds.
C25D 5/14 - Dépôt de plusieurs couches du même métal ou de métaux différents au moins une couche étant du nickel ou du chrome plusieurs couches étant du nickel ou du chrome, p.ex. couches doubles ou triples
C25D 3/06 - Dépôt électrochimique; Bains utilisés à partir de solutions de chrome à partir des solutions de chrome trivalent
The present invention relates to an apparatus for the production of ammonia or hydrogen, comprising a) a gas stream feed conduit having a connecting conduit to a steam reformer with a waste heat section, b) a heat exchanger located downstream of the gas stream feed conduit; c) a gas stream preheater located downstream of the heat exchanger; d) a recirculation conduit which is located downstream of the gas stream preheater and leads to the gas stream feed conduit or, upstream of the heat exchanger, to the connecting conduit, and e) the steam reformer with the waste heat section, where the waste heat section is in thermal contact with the gas stream preheater and the flow of the gas stream which has been heated in the gas stream preheater through the recirculation conduit can be regulated. The invention further relates to a process for the production of ammonia or hydrogen using the apparatus of the invention and also to the use of this apparatus.
C01B 3/02 - Production d'hydrogène ou de mélanges gazeux contenant de l'hydrogène
C01B 3/34 - Production d'hydrogène ou de mélanges gazeux contenant de l'hydrogène par réaction de composés organiques gazeux ou liquides avec des agents gazéifiants, p.ex. de l'eau, du gaz carbonique, de l'air par réaction d'hydrocarbures avec des agents gazéifiants
The invention relates to a fluid-bed granulator system for producing fertilizer granules with a defined size at least comprising: a.) a fluid-bed granulator, b.) a first cooler externally connected with the fluid-bed granulator or forming an internal part of the fluid-bed granulator, c.) a product screen connected with the first cooler wherein the product screen at least comprises: - an exit for on-size particles; - an exit for oversized particles; and - an exit for undersized particles; c.1) wherein the exit for undersized particles is connected with the fluid- bed granulator and wherein the exit for oversized particles is connected with the fluid-bed granulator via one or more crushers; c.2) wherein the exit for on-size particles is connected with a first splitter and wherein the first splitter is connected with the fluid-bed granulator and a post processing unit; and wherein a particle size analyzer is located between the fluid-bed granulator and the product screen.
B02C 23/10 - Séparation ou triage de matériaux, associé au broyage ou à la désagrégation au moyen d'un séparateur situé dans le passage de décharge de la zone de broyage ou de désagrégation
B02C 23/14 - Séparation ou triage de matériaux, associé au broyage ou à la désagrégation au moyen de plusieurs séparateurs
C05C 9/00 - Engrais contenant de l'urée ou ses composés
22.
SPRAY NOZZLE FOR PRODUCING A UREA-SULFUR FERTILIZER
The invention relates to a spray nozzle for the production of urea fertilizer granules and/or urea-sulfur fertilizer granules, at least comprising a conveying channel and an atomizing gas channel, wherein the conveying channel has at least one separating pin and the atomizing channel has at least one swirl element and the swirl elements comprise inserts, cutouts and moving and fixed elements. The invention further comprises a fluidized bed granulator with a spray nozzle for production of a urea-sulfur fertilizer, a process for producing a urea-sulfur, fertilizer, and the use of the spray nozzle for production of fertilizer granules.
B01J 2/16 - Procédés ou dispositifs pour la granulation de substances, en général; Traitement de matériaux particulaires leur permettant de s'écouler librement, en général, p.ex. en les rendant hydrophobes par suspension de la substance en poudre dans un gaz, p.ex. sous forme de "lits fluidisés" ou de rideau
B05B 7/06 - Pistolets pulvérisateurs; Appareillages pour l'évacuation avec un orifice de sortie en entourant un autre situé approximativement dans le même plan
B05B 7/10 - Pistolets pulvérisateurs; Appareillages pour l'évacuation produisant une turbulence à la sortie
C05C 9/00 - Engrais contenant de l'urée ou ses composés
Disclosed is a urea production plant at least comprising a. a synthesis and recovery section; b. a first evaporation section connected with the synthesis and recovery section and a first condensation section; c. a granulation section connected with the first evaporation section; d. a scrubbing section connected with the granulation section; e. a second evaporation section connected with the scrubbing section and wherein the second evaporation section is connected with the granulation section , f. a second condensation section connected with the second evaporation section ; g. a quenching section comprising a liquid inlet for the distribution of a quenching liquid, located and connected between the granulation section and the scrubbing section and wherein the quenching section is connected with a quenching liquid providing section and the second condensation section.
C05C 9/00 - Engrais contenant de l'urée ou ses composés
B01D 47/00 - Séparation de particules dispersées dans l'air, des gaz ou des vapeurs en utilisant un liquide comme agent de séparation
B01J 2/00 - Procédés ou dispositifs pour la granulation de substances, en général; Traitement de matériaux particulaires leur permettant de s'écouler librement, en général, p.ex. en les rendant hydrophobes
24.
USE OF A Q&P STEEL FOR PRODUCING A SHAPED COMPONENT FOR HIGH-WEAR APPLICATIONS
The invention relates to the use of a Q&P steel for production of a formed component (2) for high-wear applications, wherein the Q&P steel has a hardness of at least 230 HB, especially at least 300 HB, preferably at least 370 HB, and a bending angle .alpha. of at least 60°, especially at least 75°, preferably at least 85°, determined to VDA238-100, and/or a bending ratio of r/t < 2.5, especially r/t < 2.0, preferably r/t < 1.5, where t corresponds to the material thickness of the steel and r to the (inner) bending radius of the steel.
SHEET STEEL WITH A CONVERSION COATING, METHOD OF PRODUCING CONVERSION-COATED SHEET STEEL AND TREATMENT AGENT FOR APPLICATION OF A CONVERSION COATING ON SHEET STEEL
The invention makes available sheet steel, in particular strip-shaped blackplate, with a conversion coating which is prepared from components dissolved in water, wherein the components are selected from the group of i) hexafluorotitanate, ii) zinc phosphate, iii) phosphoric acid, iv) a mixture of any of i) to iii), provided that the components i), ii) and iii) do not contain any organic ingredients.
C23C 22/36 - Traitement chimique de surface de matériaux métalliques par réaction de la surface avec un milieu réactif laissant des produits de réaction du matériau de la surface dans le revêtement, p.ex. revêtement par conversion, passivation des métaux au moyen de solutions aqueuses au moyen de solutions aqueuses acides d'un pH < 6 contenant des fluorures ou des fluorures complexes et des phosphates
The invention relates to a composite material, in particular for use in a stator stack and/or rotor stack, comprising a first and a second electrical-steel-strip layer and a polymer layer arranged therebetween, the polymer layer consisting of a cross-linked high-molecular-weight acrylate-based copolymer and having a layer thickness in the range from 3 bis 20 µm.
B32B 15/01 - Produits stratifiés composés essentiellement de métal toutes les couches étant composées exclusivement de métal
C21D 1/70 - Revêtements temporaires ou matériaux d'enrobage appliqués avant ou pendant le traitement thermique pendant le chauffage ou la trempe
H01F 3/04 - Noyaux, culasses ou induits en bandes ou rubans
H01F 27/25 - Noyaux magnétiques fabriqués à partir de bandes ou de feuillards
H01F 41/02 - Appareils ou procédés spécialement adaptés à la fabrication ou à l'assemblage des aimants, des inductances ou des transformateurs; Appareils ou procédés spécialement adaptés à la fabrication des matériaux caractérisés par leurs propriétés magnétiques pour la fabrication de noyaux, bobines ou aimants
27.
METHOD FOR CLEANING THE EXHAUST AIR OF A GRANULATING SYSTEM FOR PRODUCING A UREA-CONTAINING GRANULATE
Disclosed is a process for purifying the exhaust air from a granulation plant for producing a urea- containing granulate wherein a gas stream containing a urea-containing dust and ammonia is contacted with a sulfuric acid solution or a nitric acid solution in a scrubbing process, wherein the scrubbing process comprises at least two separate sequential scrubbing stages. Accordingly, an acidic scrubbing solution generated in the second scrubbing stage may be recycled into the first scrubbing stage via a conduit and used therein as a first weakly acidic scrubbing solution. A pre-scrubbing stage in which a substantial proportion of the dust is scrubbed out of the gas stream may additionally be arranged upstream of the first scrubbing stage.
HOT ROLLED FLAT STEEL PRODUCT CONSISTING OF A COMPLEX-PHASE STEEL WITH A LARGELY BAINITIC MICROSTRUCTURE AND METHOD FOR MANUFACTURING SUCH A FLAT STEEL PRODUCT
The invention relates to a hot-rolled, economically alloyed flat steel product having minimized edge-crack sensitivity characterized by a hole expansion of at least 60%, good welding suitability, a yield strength Rp0.2 of at least 660 MPa, a tensile strength Rm of at least 760 MPa, and an elongation at break A80 of at least 10%. The flat steel product is produced from a complex-phase steel, which consists of (in wt%) C: 0.01-0.1%, Si: 0.1-0.45%, Mn: 1-2.5%, Al: 0.005-0.05%, Cr: 0.5-1%, Mo: 0.05-0.15%, Nb: 0.01-0.1%, Ti: 0.05-0.2%, N: 0.001-0.009%, P: < 0.02%, S: < 0.005%, Cu: < 0.1%, Mg: < 0.0005%, O: < 0.01%, optionally one or more elements from the group "Ni, B, V, Ca, Zr, Ta, W, REM, Co" with the stipulation Ni: < 1%, B: < 0.005%, V: < 0.3%, Ca: 0.0005-0.005%, Zr, Ta, W: in total < 2%, REM: 0.0005-0.05%, Co: < 1%, and iron and unavoidable impurities as the remainder, wherein the following applies to the contents %Ti, %Nb, %N, %C, %S of Ti, Nb, N, C, and S in the complex-phase steel: (1) %Ti > (48/14) %N + (48/32) %S (2) %Nb < (93/12) %C + (45/14) %N + (45/32) %S, and wherein the microstructure of the flat steel product consists (in area %) of = 80% bainite, < 15% ferrite, < 15% martensite, < 5% cementite, and < 5 vol% residual austenite. The invention further relates to a method for producing such a flat steel product.
A method for producing highly dimensionally accurate sheet-metal components is described, the method comprising: forming a sheet bar into a preformed part (10, 10'), wherein the preformed part (10, 10') has in cross section an excessive developed length, at least in certain regions; calibrating the preformed part (10, 10'), at least in certain regions, to form a calibrated part (50) by using the excessive developed length of the cross section of the preformed part (10, 10'), at least in certain regions, wherein during the calibration the preformed edges of the preformed part (10, 10') are arranged without any form fit, at least in certain regions; and trimming the calibrated part (50), at least in certain regions, after the calibration to produce the sheet-metal component (60). A device for producing highly dimensionally accurate sheet-metal components is also described.
The invention relates to a hot-rolled flat steel product having a larger sheet thickness and an optimized combination of properties. For this purpose, the flat steel product consists of a steel having (in wt%) C: 0.1 0.3%, Mn: 1.5 3.0%, Si: 0.5 1.8%, Al: = 1.5%, P: = 0.1%, S: = 0.03%, N: = 0.008%, optionally one or more elements of the group "Cr, Mo, Ni, Nb, Ti, V, B" with the following concentration: Cr: 0.1 - 0.3%, Mo: 0.05 - 0.25%, Ni: 0.05 - 2.0%, Nb: 0.01 - 0.06%, Ti: 0.02 - 0.07%, V: 0.1 - 0.3%, B: 0.0008 - 0.0020%, the remainder iron and unavoidable production-related impurities. The flat steel product has a tensile strength Rm of 800 - 1500 MPa, a yield strength Rp of more than 700 MPa, an elongation at break A of 7 - 25% and a hole expansion ? of more than 20%. Furthermore, the microstructure of the flat steel product consists of at least 85 area % martensite, at least half of which is tempered martensite, wherein the remainder of the microstructure consists of = 15 vol% retained austenite, = 15 area % bainite, = 15 area % polygonal ferrite, = 5 area % cementite and/or of = 5 area % non-polygonal ferrite, wherein the microstructure of the flat steel product has a kernel average misorientation "KAM" of at least 1.50°. The invention further relates to a method for producing a flat steel product according to the invention, wherein the microstructure characteristics of the flat steel product according to the invention are set by means of a suitable heat treatment.
C21D 8/00 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
C21D 8/04 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes pour produire des produits plats ou des bandes pour l'emboutissage profond
In a method of inspecting a steel strip, wherein at least one surface of the steel strip (1) is illuminated and scanned by at least one camera (2) so as to generate an image record (10) that defines a two-dimensional image of the scanned surface and wherein the image record (10) is sent to an image processing unit (3), with said image processing unit (3) subjecting the image record (10) to the detection of defects and, upon detection of a surface defect (11), classifying the detected surface defect (11), the steel strip (1) is magnetized and the magnetic flux leakage on the surface of the steel strip (1) is detected by means of at least one magnetic field-sensitive flux leakage sensor (4) in order to detect inhomogeneities (21) in the interior of the steel strip (1), with the flux leakage sensor (4) generating a flux leakage record (20) that is sent to the image processing unit (3) and that is subjected by the image processing unit (3) to the detection of defects so as to identify inhomogeneities (21) in the interior of the steel strip (1).
The invention relates to an assembly device for stacking a fuel cell stack in a vertical direction, said fuel cell stack being structured of membrane electrode units and bi-polar plates in alternation.
The invention relates to a method for producing an NOx reductant AUS 32 solution (diesel exhaust fluid) comprising at least the mixing of water and a particulate composition containing (i) urea; and an additive comprising component (ii): (ii) combination of at least one polymer or oligomer containing amino groups and at least one functionalized polyvinyl compound; wherein the weight percentage of component (i) in the particulate composition is greater than 60 wt% and the weight percentage of component (ii) in the particulate composition is less than 1 wt% and wherein a urea solution is obtained and the weight percentage of component (i) in the obtained urea solution is between 31 wt% and 34 wt%.
The invention relates to a method for producing a formed body that does not require the high forming forces employed in previous methods (15, 15'). The present method comprises: - providing a round or pre-formed semi-finished product (1) of a steel material; - heating the semi-finished product (1) at least in regions to a first temperature, - forming a hub (8) on the heated semi-finished product (1), for generating a preform (3) having the upper geometric element in a first operative step and/or tool (7) by means of roller spinning; - heating or re-heating the preform (3) having the upper geometric element at least in regions to a second temperature; - forming a bell (14) on the heated preform (3) having the upper geometric element, for generating a preform (11) having the upper and at least one lower geometric element in a second operative step and/or tool (12) by means of roller spinning; - heating or re-heating the preform (11) at least in regions to a third temperature; - profiling the heated preform (11) warm for generating a formed body (15, 15') in a third operative step and/or tool (16, 20).
The present invention relates to a remote-controlled underwater vehicle 10 for extracting oil from the underside of a closed ice cover, a system for extracting oil from the underside of a closed ice cover consisting of a remote-controlled underwater vehicle 10 and a submarine, as well as a method for extracting oil from the underside of a closed ice cover.
B63B 35/32 - Embarcations ou structures flottantes similaires spécialement adaptées à des finalités spécifiques et non prévues ailleurs pour le ramassage des matières polluantes au large
E02B 15/04 - Dispositifs pour éliminer le mazout ou les produits flottants similaires de la surface de l'eau ou pour l'en maintenir exempte, en séparant ou en enlevant ces matériaux
36.
METHOD FOR THE PROVISION OF CARBON DIOXIDE FOR THE SYNTHESIS OF UREA
The invention relates to a method for the separation of carbon dioxide from CO2-containing gases and to a device for the provision of carbon dioxide for the synthesis of urea.
C07C 273/10 - Préparation d'urée ou de ses dérivés, c. à d. de composés contenant l'un des groupes les atomes d'azote ne faisant pas partie de groupes nitro ou nitroso d'urée, de ses sels, de ses complexes ou de ses composés d'addition combinée avec la synthèse d'ammoniac
C01B 3/02 - Production d'hydrogène ou de mélanges gazeux contenant de l'hydrogène
Process for preparing sulfuric acid, wherein, in a production mode of the process, sulfur is oxidized to sulfur dioxide in a first oxidation stage and the sulfur dioxide is catalytically oxidized to sulfur trioxide in a second oxidation stage. The sulfur trioxide is absorbed in at least one absorption stage. In the production mode, process gases from the last absorption stage in the flow direction are discharged. In a standby mode of the process, at least one heating stage for heating the process gases is connected in. The process gases exiting from the absorption stage are conveyed to the heating stage and the process gases are circulated via the heating stage, the second oxidation stage and the absorption stage.
Disclosed is a catalytic reactor having a shell which extends about a reactor center axis and having at least one reactor module which comprises a gas distribution chamber connected to a shell-side gas feed, a gas collection chamber connected to a shell-side gas discharge, and, between the gas distribution chamber and the gas collection chamber, a catalyst bed which extends transversely of the reactor center axis, wherein the gas distribution chamber and the gas collection chamber are each bounded by the catalyst bed and an associated reactor wall, wherein the gas feed either opens into the gas distribution chamber on the shell side or is connected to a pipe length which extends towards the reactor center axis and opens into the gas distribution chamber in the region of the reactor center axis, wherein, inter alia, a height, determined parallel to the reactor center axis, of the gas distribution chamber reduces towards the reactor center axis starting from a mouth of the gas feed in the case of a shell-side connection.
B01J 8/04 - Procédés chimiques ou physiques en général, conduits en présence de fluides et de particules solides; Appareillage pour de tels procédés avec des particules immobiles, p.ex. dans des lits fixes le fluide passant successivement à travers plusieurs lits
C01B 17/765 - Conversion de SO3 en plusieurs stades
The invention relates to a method for producing sulfuric acid, wherein elementary sulfur is melted in a melting step. Subsequently sulfuric acid is produced from the melted sulfur. The sulfur-containing waste gases produced in the melting step are oxidized in an additional oxidation step in which sulfur-containing components of the waste gases are oxidized to form sulfur dioxide. Said sulfur dioxide is manufactured to form at least one reaction product. The invention also relates to a device for carrying out said method.
The present invention relates to a method of thermally treating black plate which is coated with a conversion coating, wherein the conversion-coated black plate is heated during a thermal treatment time (t) from 0.1 seconds to 30 seconds to a temperature in the range of 240°C to 320°C. The heat treatment makes it possible to improve the adhesion of the conversion coating to the black plate surface. In one application of the method, the heat treatment is carried out in a process for the production of corrosion- resistant black plate, wherein prior to, during or after the heat treatment, an organic coating in the form of paint or a polymer coating is applied to the conversion coating of the black plate.
The present invention relates to a recirculation fuel cell device with reduced reactant emission. The invention further relates to a method for fully recirculating the anode gas flow of a recirculation fuel cell device. The invention further relates to a submarine with a corresponding fuel cell, and to the carrying out of the method aboard a submarine.
H01M 8/04089 - Dispositions pour la commande des paramètres des réactifs, p.ex. de la pression ou de la concentration des réactifs gazeux
H01M 8/04119 - Dispositions pour la commande des paramètres des réactifs, p.ex. de la pression ou de la concentration des réactifs gazeux avec apport simultané ou évacuation simultanée d’électrolyte; Humidification ou déshumidification
The present invention relates to a method for the application of an aqueous treatment solution to the surface of a strip (1) which is moving at a preset trip speed, comprising the following steps: spraying the aqueous treatment solution onto at least one rotating roll (21, 22) of a roll coater (20) by means of rotary sprayer (2) having a plurality of spray rotors (3) disposed side by side in the longitudinal direction of the roll (21, 22), to which the aqueous treatment solution is supplied and which are made to rotate by a spray rotor drive so that the treatment solution, driven by the centrifugal force, is sprayed in the form of a spray jet onto the surface of the roll (21, 22), and applying the aqueous treatment solution to at least one surface of the strip (1) by moving the strip (1) past a rotating application roll (21) of the roll coater (20), with the application roll (21) transferring the aqueous treatment solution in the form of a wet film onto the surface of the strip (1). In addition, the present invention also relates to an application device comprising a roll coater (20) and a rotary sprayer (2) as well as to a system for carrying out the method. (Figure 2)
B05D 1/28 - Procédés pour appliquer des liquides ou d'autres matériaux fluides aux surfaces par transfert de liquides ou d'autres matériaux fluides, à partir de la surface d'éléments porteurs, p.ex. de pinceaux, tampons, rouleaux
C23C 22/05 - Traitement chimique de surface de matériaux métalliques par réaction de la surface avec un milieu réactif laissant des produits de réaction du matériau de la surface dans le revêtement, p.ex. revêtement par conversion, passivation des métaux au moyen de solutions aqueuses
C23C 22/76 - Application du liquide par pulvérisation
43.
ROLLER FOR DEFLECTING OR GUIDING A METAL STRIP, WHICH IS TO BE COATED, IN A METAL MELT BATH
The invention relates to a roller (5, 6) for deflecting or guiding a metal strip, which is to be coated, in a metal melt bath, having bearing journals (9) arranged coaxially with one another for rotationally supporting the roller (5, 6). In order to obtain a high coating quality in the hot-dip coating of metal strip, in particular steel strip, using such a roller, and to increase the service life of such a roller, the invention proposes that each bearing journal (9) comprise a plurality of axially spaced, annular elevations (9.5; 12.1), which are provided with a plain-bearing coating (12) or are formed from a plain- bearing coating (12). The roller (5, 6) preferably comprises a steel roller shell (8), wherein a substantially cylindrical or circular-disk-shaped connecting steel portion (9.1), which extends radially in the direction of the roller shell (8), is provided on each bearing journal (9), wherein at least one of the connecting portions (9.1) comprises at least one passage (9.3) opening out at the end face of the roller shell (8), and wherein at least the one passage (9.3) is closed by means of a gas-permeable plug element (10) composed of ceramic material.
C23C 2/00 - Procédés de trempage à chaud ou d'immersion pour appliquer le matériau de revêtement à l'état fondu sans modifier la forme de l'objet immergé; Appareils à cet effet
B05C 3/12 - Appareillages dans lesquels un ouvrage est mis en contact avec une grande quantité de liquide ou autre matériau fluide l'ouvrage étant immergé dans le liquide ou autre matériau fluide pour traiter un ouvrage de longueur indéfinie
The invention relates to a method for producing a nitrided packaging steel from a hot-rolled steel product with a carbon content of 400 to 1200 ppm, characterized by a cold-rolling of the steel product to a flat steel product, subsequent recrystallization annealing of the cold-rolled flat steel product in an annealing furnace, in particular a continuous annealing furnace, wherein a nitrogen-containing gas is supplied into the annealing furnace and is directed at the flat steel product in order to introduce unbonded nitrogen into the flat steel product in an amount corresponding to a concentration of more than 100 ppm, or to increase the amount of unbonded nitrogen in the flat steel product to a concentration of more than 100 ppm, and subsequent cooling of the recrystallized annealed flat steel product at a cooling rate of at least 100 K/s directly after the recrystallization annealing. Using this method, cold-rolled flat steel products may be produced for packaging purposes with a tensile strength of more than 650 MPa and in particular between 700 and 850 MPa.
C21D 10/00 - Modification des propriétés physiques autrement que par traitement thermique ou déformation
C21D 1/76 - Réglage de la composition de l'atmosphère
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
C23C 8/26 - Nitruration de la couche superficielle de matériaux ferreux
C23F 17/00 - Procédés à étapes multiples pour le traitement de surface de matériaux métalliques utilisant au moins un procédé couvert par la classe et au moins un procédé couvert soit par la sous-classe , soit par la sous-classe , soit par la classe
The disclosure relates to a stretcher that can be rolled up and that comprises at least two straps for securing a person in the longitudinal direction of the stretcher. The straps for securing a person in the longitudinal direction of the stretcher are arranged such that the straps are fastened above a first region, wherein the first region is designed to accommodate the shoulders of the person on the stretcher. The stretcher comprises a foot plate, wherein the foot plate is adjustable in the longitudinal direction of the stretcher. A deployable buoyancy device is mounted on the stretcher, wherein the deployable buoyancy device is fastened in a second region on the stretcher, and wherein the second region is designed to accommodate a person's neck. The deployable buoyancy device is of a tubular configuration, wherein the deployable buoyancy device is connected in the second region to the straps for securing a person in the longitudinal direction.
A process for decreasing content of a harmful substance of a chlorine- containing off-gas stream formed or used in a thermal treatment of a material, in which - the off-gas stream is divided into a main stream and a substream, - at least some of the chlorine is separated off from the main stream, and - the content of the harmful substance is then lowered in the main stream by separation, wherein - a chlorine-containing additive is introduced into the main stream in order to achieve an increase in the degree of separation in the separation of the harmful substance, and in which the substream is filtered, wherein a filter cake separated from the substream in the filtration is used at least in part as chlorine-containing additive.
The disclosure provides a cold-rolled and recrystallization-annealed flat steel product having a ferritic microstructure, which possesses optimized formability and suitability for painting. For this purpose, it consists of a steel comprising (in % by weight): C: 0.0001%-0.003%, Si: 0.001%-0.025%, Mn: 0.05%-0.20%, P: 0.001%-0.015%, Al: 0.02%-0.055%, Ti: 0.01%-0.1%, and in each case optionally Cr: 0.001%-0.05%, V: up to 0.005%, Mo: up to 0.015%, N: 0.001%-0.004%. At the same time, it has the following mechanical properties: Rp0.2 <= 180 MPa, Rm <= 340 MPa, A80 <= 40%, n value <= 0.23. At at least one of its surfaces, it additionally has an arithmetic mean roughness Ra of 0.8-1.6 µm and a peak count RPc of 75/cm. Also provided is a method of production thereof.
C22C 38/14 - Alliages ferreux, p.ex. aciers alliés contenant du titane ou du zirconium
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
Disclosed herein is a method in which a steel component can be produced, by forming of a flat steel product in a forming machine, such that a flat steel product is provided. A tribologically active layer is produced on at least one of the surfaces of the flat steel product or of the forming machine used for forming the steel product that come into mutual contact in the course of forming, by coating with a coating material selected from the group consisting of aluminum sulfate, ammonium sulfate, iron sulfate, and magnesium sulfate. The flat steel product is inserted into the forming tool, and the flat steel product inserted into the forming machine is formed, to produce the steel component.
The invention relates to a method for producing a nitrided packaging steel with a carbon content of 10 to 1000 ppm and an amount of uncombined nitrogen, dissolved in the steel, of more than 100 ppm, wherein the nitriding is performed in two stages, to be specific a first stage, in which a molten steel is nitrided to a nitrogen content of at most 160 ppm by introducing a nitrogen-containing gas and/or a nitrogen-containing solid into the molten steel, and a second stage, in which a flat steel product produced from the nitrided molten steel by cold rolling is treated with a nitrogen-containing gas in order to increase further the amount of uncombined nitrogen in the flat steel product. The second nitriding stage is in this case performed in an annealing furnace, in which the flat steel product is at the same time annealed in a recrystallizing manner. The packaging steels produced by this method are distinguished by great strength, in excess of 600 MPa, and good elongation to fracture, regularly in excess of 5%, as well as by good forming properties. The invention also relates to a nitrided packaging steel in the form of a flat steel product.
C22C 33/04 - Fabrication des alliages ferreux par fusion
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
50.
STEEL PRODUCT WITH AN ANTICORROSIVE COATING OF ALUMINIUM ALLOY AND METHOD FOR THE PRODUCTION THEREOF
The invention relates to a steel product, more particularly flat steel product, having a metallic anticorrosion coating of an aluminum alloy, and to a method for producing a steel product of this kind. So that such a steel product possesses high media resistance, more particularly high acid resistance and corrosion resistance, the steel product is immersed in a liquid-melt coating bath which comprises an aluminum alloy comprising in accordance with the invention, further to Al and unavoidable impurities, the following elements: Mn 0.2-2 wt% and/or Mg 0.2-7 wt% Fe 0.5-5 wt% as obligatory element Ti 0.05-0.4 wt% and/or Zr 0.05-0.4 wt%. The method of the invention is characterized by the following steps: Provision of a steel product, more particularly flat steel product, in a hot-rolled or cold-rolled state, Activation of the surface of the steel product to remove passive oxides from the surface of the steel product, and Coating of the surface-activated steel product by immersion in a liquid-melt coating bath which comprises an aluminum alloy having the composition specified above.
Disclosed is a fuel cell which comprises a membrane which is arranged between two gas diffusion layers, and also a first current collector which is arranged on a first side of the membrane and a second current collector which is arranged on a second side, which second side is situated opposite the first side, wherein a second current collector edge region extends substantially as far as an edge region of the membrane at least on the second side of the membrane, or wherein a second current collector edge region extends further in the direction of an edge region of the membrane on the second side of the membrane than a first current collector edge region which is arranged on the first side of the membrane.
The invention relates to a particulate, urea-containing composition, to a method and apparatus for producing it, to the use thereof as fertilizer, as technical urea or as feed additive, and to the use of an additive for producing a particulate, urea- containing composition. The particular, urea-containing composition comprises an additive component (ii) and one or both of components (iii) and (iv): where component (ii) is a combination of polyethylenimine and polyvinyl alcohol or combination of polyethylenimine and polyvinylamine; component (iii) is at least one aliphatic C2-C8 dialdehyde; and component (iv) is at least one compound selected from the group consisting of aliphatic clicarboxylic acids, aliphatic tricarboxylic acids, aromatic dicarboxylic acids, aldehydic acids, and salts and anhydrides thereof.
C05G 3/20 - Mélanges d'un ou plusieurs engrais avec des additifs n'ayant pas une activité spécifique d'engrais pour éviter que les engrais soient réduits en poudre; Additifs anti-poussière
C05G 5/10 - Engrais solides ou semi-solides, p.ex. poudre
C05C 9/00 - Engrais contenant de l'urée ou ses composés
53.
REDUCING THE EMISSION OF NITROGEN OXIDE WHEN STARTING UP SYSTEMS FOR PRODUCING NITRIC ACID
CA 02949728 2016-12-20 Abstract: The invention relates to a method of reducing the concentration of NOõ nitrogen oxides in tail gas obtained during the startup of a plant for preparation of nitric acid. The tail gas contains NO, and is obtained during the startup of the plant. The tail gas is heated from a starting temperature To, passing through a threshold temperature TG and up to an operating temperature TB at which steady-state operation of the plant is subsequently effected (To < TG < TB). The method comprises the following steps: (a) passing the NO,-containing tail gas through a storage medium for NO, and storing at least a portion of the NO, in the storage medium for NO, while the temperature of the tail gas is lower than the threshold temperature TG; and (b) combining the NO, with a reducing agent for NO, in the presence of an SCR catalyst after the temperature of the tail gas has exceeded the threshold temperature TG, which results in catalytic reduction of at least a portion of the NOx.
Method for constructing a borehole, particularly into the Earth's crust, by means of a drill head which is held in the borehole by linkage, wherein the drill head comprises a thermal device which causes material on the base of the borehole to be released from the solid phase via phase change, wherein the released material is taken away in the direction of the Earth's surface wherein the thermal device is operated so that it generates a high thermal output power, by means of which the material predominantly sublimates when transitioning out of the solid phase.
Disclosed is a process comprising: a) smelting a steel melt consisting of C, S, Al, N, Cr, Nb, B, Ti, unavoidable impurities, and the remainder Fe; b) casting the melt to give a slab; c) reheating the slab to 1200-1300°C; d) rough-rolling the slab at 950-1250°C and a total draft of 50%; e) hot finish-rolling the rough-rolled slab with a hot rolling end temperature of 800 - 880°C; f) cooling the hot-finish-rolled flat steel product within s after the hot finish-rolling to 550-620°C at a cooling rate of 40 K/s; and g) coiling the hot-finish-rolled flat steel product.
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
The invention presents and describes a method for operating a shaft furnace, in particular a blast furnace, wherein at least one gas is introduced into the furnace. To achieve an acceleration of the reaction processes in the furnace, it is proposed that shockwaves be introduced into the furnace.
The disclosure relates to a process for preparing ammonia gas and CO 2 for a urea synthesis. In the process, a process gas containing nitrogen, hydrogen and carbon dioxide as main components is produced from a metallurgical gas which contains blast furnace gas at least as mixing component or consists of blast furnace gas. The process gas is fractionated to give a gas stream containing the CO 2 component and a gas mixture consisting essentially of N2 and H2. An ammonia gas suitable for the urea synthesis is produced from the gas mixture by means of ammonia synthesis. CO 2 is branched off from the CO 2-containing gas stream in a purity and amount suitable for the urea synthesis.
C01B 3/02 - Production d'hydrogène ou de mélanges gazeux contenant de l'hydrogène
C07C 273/04 - Préparation d'urée ou de ses dérivés, c. à d. de composés contenant l'un des groupes les atomes d'azote ne faisant pas partie de groupes nitro ou nitroso d'urée, de ses sels, de ses complexes ou de ses composés d'addition à partir de dioxyde de carbone et d'ammoniac
C07C 273/10 - Préparation d'urée ou de ses dérivés, c. à d. de composés contenant l'un des groupes les atomes d'azote ne faisant pas partie de groupes nitro ou nitroso d'urée, de ses sels, de ses complexes ou de ses composés d'addition combinée avec la synthèse d'ammoniac
The invention relates to a plant complex for steel production comprising a blast furnace (1) for producing pig iron, a converter steel works (2) for producing crude steel and a gas-conducting system for gases that occur in the production of pig iron and/or in the production of crude steel. According to the invention, the plant complex additionally has a chemical or biotechnological plant (11) connected to the gas-conducting system and a plant (21) for producing hydrogen. The plant (21) for producing hydrogen is connected to the gas-conducting system by a hydrogen-carrying line. Also the subject of the invention is a method for operating the plant complex.
The disclosure relates to a plant complex for steel production comprising a blast furnace for producing pig iron, a converter steel works for producing crude steel, a gas-conducting system for gases that occur in the production of pig iron and/or in the production of crude steel, and also a power-generating plant for electricity generation. The power-generating plant is operated with a gas that comprises at least a partial amount of the blast-furnace top gas that occurs in the production of pig iron in the blast furnace and/or a partial amount of the converter gas that occurs in the converter steel works. A chemical or biotechnological plant is provided, connected to the gas-conducting system and arranged in parallel with the power-generating plant with respect to the gas supply. The gas-conducting system comprises an operationally controllable gas diverter for dividing the streams of gas that are fed to the power-generating plant and the chemical or biotechnological plant.
Disclosed herein is a plant complex for steel production comprising a blast furnace for producing pig iron, a converter steel works for producing crude steel, a gas-conducting system for gases that occur when producing the pig iron and/or producing the crude steel, and a power-generating plant for electricity generation. The power-generating plant is designed as a gas-turbine power- generating plant or gas-turbine and steam-turbine power-generating plant and is operated with a gas that comprises at least a partial amount of the blast- furnace top gas that occurs in the blast furnace when producing the pig iron and/or a partial amount of the converter gas that occurs in the converter steel works. The plant complex additionally comprises a chemical plant and a biotechnological plant, the power-generating plant, the chemical plant and the biotechnological plant being arranged in a parallel setup with regard to the gas supply. The gas- conducting system comprises an operationally controllable gas-distributing device for dividing the streams of gas that are fed to the power-generating plant, the chemical plant and the biotechnological plant. Also disclosed is a method for operating the plant complex.
Disclosed herein is a method for producing syngas in combined operation with a metallurgical plant which comprises at least one blast furnace for producing pig iron, a converter steel works and a coke-oven plant. Part of the blast-furnace top gas that is produced in the production of pig iron and/or part of the converter gas that occurs in the converter steel works and/or part of the coke-oven gas that is produced in the coke-oven plant are mixed. By choosing the gas streams that are brought together to form a mixed gas and/or by changing the mixing ratios of the gas streams that are brought together, at least two streams of useful gas are produced, differing with regard to their composition and respectively prepared to form streams of syngas.
Disclosed herein is a plant complex for steel production comprising a blast furnace for producing pig iron, a converter steel works for producing crude steel and a gas-conducting system for gases that occur when producing the pig iron and/or producing the crude steel. The plant complex additionally has a chemical plant or biotechnological plant, connected to the gas-conducting system, and also an energy storage for covering at least part of the electricity demand of the plant complex. Also disclosed herein is a method for operating the plant complex.
brevets
