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公开(公告)号：US20240294447A1
公开(公告)日：2024-09-05
申请号：US18549581
申请日：2022-03-14
发明人： Mathieu Zellhuber , Martin Schubert , Andreas Meiswinkel , Wolfgang Muller , Gerhard Mestl , Klaus Wanninger , Peter Scheck
CPC分类号： C07C5/3332 , B01J19/2425 , C07C5/3335 , B01J2219/00054 , B01J2219/00162 , C07C2523/22 , C07C2523/28 , C07C2527/057
摘要： A method for producing a target compound includes distributing a feed mixture containing ethane to multiple reaction tubes of a shell-and-tube reactor arranged in parallel, and subjecting to an oxidative catalytic conversion of the ethane in the reaction tubes. The catalytic reaction is carried out by means of catalysis zones with different activity arranged in series in the reaction tubes. One or more catalytically active materials and one or more catalytically inactive materials are provided in each of the catalysis zones. The different activity of the catalysis zones is effected by providing the one or more catalytically active materials having identical or essentially identical basic formulation, wherein the one or more catalytically active materials is or are prepared using different calcination intensities.
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公开(公告)号：US20240278225A1
公开(公告)日：2024-08-22
申请号：US18568559
申请日：2022-05-11
申请人： LINDE GMBH , BASF SE
发明人： Nicole SCHÖDEL , Stephanie NEUENDORF , Axel BEHRENS , Wibke KORN , Sonja SCHULTE , Stefan HOFFMANN , Marcelo Daniel KAUFMAN RECHULSKI , Virginie LANVER , Stefan DIETRICH , Nils BOTTKE , Christiane KURETSCHKA , Hamideh AHI , Manuel Frederik GENTZEN , Michael KRAMER
CPC分类号： B01J37/10 , B01J21/04 , B01J23/78 , B01J23/83 , B01J37/18 , C01B3/40 , C01B2203/0238 , C01B2203/1052 , C01B2203/1082
摘要： The invention relates to a method for activating a catalyst for catalytic reforming that is particularly carried out with carbon dioxide being reacted, and according to which an activation gas that contains steam and hydrogen is passed over the catalyst to be activated at an activation temperature during an activation period. The activation gas comprises 10 to 30 mol-% steam, 40 to 60 mol-% hydrogen and 20 to 40 mol-% one or more inert gases.
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公开(公告)号：US20240263881A1
公开(公告)日：2024-08-08
申请号：US18566412
申请日：2022-06-02
申请人： Linde GmbH
发明人： Joachim VON SCHEELE , Anders CARLSSON , Eric FRANK , Mats JONSSON
CPC分类号： F27D17/004 , F27B11/00 , F27D7/06 , F27D2007/063 , F27D2017/007
摘要： The invention relates to a method for heating a furnace, wherein the furnace comprises an inner chamber and a outer chamber. A process gas is introduced into the inner chamber. A fuel is combusted with an oxidant to produce combustion gases in a combustion chamber. The combustion gases are passed through the outer chamber, and recirculated to the combustion chamber. The process gas is pre-heated by indirect heat exchange with the combustion gases.
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公开(公告)号：US20240254400A1
公开(公告)日：2024-08-01
申请号：US18564407
申请日：2022-05-30
申请人： Linde GmbH
CPC分类号： C10G9/16 , C10G75/00 , G05B17/00 , C10G2300/4075
摘要： A method of determining a carburisation model of a coil of a steam cracking furnace, the method comprises the steps of: determining reference temperature values at reference positions of a wall of a reference coil during operation of a reference steam cracking furnace comprising a reference coil; determining reference carburised portion values of a depth at a reference point in time; determining the at least one material specific constant in dependence of the first relation and the second relation; and determining the carburisation model of the coil in dependence of the determined at least one material specific constant and further in dependence of the first relation and the second relation.
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5.发明公开公开(公告)号：US20240217022A1
公开(公告)日：2024-07-04
申请号：US18558106
申请日：2022-04-28
申请人： Linde GmbH
IPC分类号： B23K9/235 , B08B7/00 , B23K9/095 , B23K103/10
CPC分类号： B23K9/235 , B08B7/0035 , B23K9/0956 , B23K2103/10
摘要： The present invention relates to a method for cleaning of a surface of at least one workpiece made out of an aluminium alloy, comprising the steps of: generating an electric arc or a plasma jet by means of a torch, applying the electric arc or the plasma jet to the surface, and moving the torch and the at least one workpiece relative to one another to clean the surface by evaporating impurities of the surface using the electric arc or plasma jet, and e.g. detecting light coming from the electric arc or plasma jet by means of an optical sensor, wherein the optical sensor generates an output signal indicative of the presence of impurities of the surface evaporated by the electric arc or by the plasma jet.
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公开(公告)号：US12012377B2
公开(公告)日：2024-06-18
申请号：US15734497
申请日：2019-06-19
申请人： LINDE GmbH
发明人： Mathieu Zellhuber , Martin Schubert , Andreas Meiswinkel , Florian Winkler , Desislava Tota , Hans-Jörg Zander
IPC分类号： C07C5/48 , B01J8/04 , C07C11/04 , C07C51/215 , C07C53/08
CPC分类号： C07C5/48 , B01J8/0496 , C07C11/04 , C07C51/215 , C07C53/08 , B01J2208/00044
摘要： The invention relates to a method for producing one or more olefins and one or more carboxylic acids, in which one or more paraffins is or are subjected to an oxidative dehydrogenation. For the oxidative dehydrogenation, a reactor (10) having a plurality of reaction zones (11, 12, 13) is used, a gas mixture comprising the one or more paraffins is successively passed through the reaction zones (11, 12, 13), and at least two of the reaction zones (11, 12, 13) are subject to varying temperature influences. The invention also relates to a corresponding system (100).
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公开(公告)号：US11993551B2
公开(公告)日：2024-05-28
申请号：US17425827
申请日：2020-01-28
申请人： LINDE GmbH
CPC分类号： C07C2/10 , B01J21/02 , B01J35/615 , C07C2521/02
摘要： A process (100) for the production of linear alpha-olefins is proposed, wherein ethylene in a feed mixture is subjected to catalytic oligomerization (1) to obtain a product mixture containing alpha-olefins with different chain length and side compounds. In a primary fractionation (2), a primary fraction is formed using at least part of the product mixture, and in a secondary fractionation (4), a secondary fraction is formed using at least part of the primary fraction. The primary fractionation (2) and the secondary fractionation (4) are carried out such that the primary fraction and the secondary fraction predominantly contain one of the alpha-olefins and are low in or free of other alpha-olefins, that the primary fraction contains one or more of the side compounds, and that the secondary fraction is depleted relative to the primary fraction in the one or more side compounds. In an intermediate step (3) between the primary fractionation (2) and the secondary fractionation (4), to which at least part of the primary fraction is subjected, the one or more side compounds are at least partly converted to one or more secondary compounds, and the one or more secondary compounds are at least partly separated in the secondary fractionation (4). The intermediate step (3) is carried out in such a way that not more than 0.8% of the alpha-olefin predominantly contained in the primary fraction or the part thereof subjected to the intermediate step is reacted. The intermediate step is carried out using an alumina-based catalyst.
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公开(公告)号：US20240166579A1
公开(公告)日：2024-05-23
申请号：US18548887
申请日：2022-03-14
申请人： LINDE GMBH
CPC分类号： C07C5/333 , B01J8/06 , B01J2208/00017
摘要： A process for producing ethylene by oxidative dehydrogenation of ethane using a shell-and-tube reactor having reaction tubes extending between a first end and a second end includes disposing one or more catalyst beds in each of the reaction tubes. In each of the reaction tubes, a ratio of a total length of the one or more catalyst beds between the first end and the second end to a diameter of each of the reaction tubes has a value between 150 and 400. The shell-and-tube reactor is operated at a linear velocity of 250 to 800 cm/s, and the one or more catalyst beds are configured such that a ratio of active catalyst mass to effective cooling area is in a range between 1.5 and 5 kg/m2.
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公开(公告)号：US20240158702A1
公开(公告)日：2024-05-16
申请号：US18548889
申请日：2022-03-08
申请人： LINDE GMBH
摘要： A method of steam cracking using a steam cracking system includes a first steam cracking furnace unit or a plurality of first steam cracking furnace units and a second steam cracking furnace unit or a plurality of second steam cracking furnace units. The first steam cracking furnace unit or each of the plurality of first steam cracking furnace units comprises one or more fired steam cracking furnaces. The second steam cracking furnace unit or each of the plurality of second steam cracking furnace units comprises one or more electric steam cracking furnaces. The first steam cracking furnace unit or each of the plurality of first steam cracking furnace units further includes means for preheating at least a part of combustion air provided to its fired steam cracking furnace or furnaces to a temperature level of at least 100° C.
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公开(公告)号：US20240158322A1
公开(公告)日：2024-05-16
申请号：US18549584
申请日：2022-03-14
发明人： Mathieu Zellhuber , Martin Schubert , Andreas Meiswinkel , Wolfgang Muller , Ernst Haidegger , Gerhard Mestl , Klaus Wanninger , Peter Scheck
CPC分类号： C07C5/48 , B01J8/067 , B01J2208/0053 , B01J2208/065 , C07C2523/22 , C07C2523/28
摘要： A method for producing a target compound includes distributing a feed mixture at a temperature in a first temperature range to a plurality of parallel reaction tubes of a shell-and-tube reactor, and subjecting the feed mixture in first tube sections of the reaction tubes to heating to a temperature in a second temperature range and in second tube sections of the reaction tubes arranged downstream of the first tube sections to oxidative catalytic conversion using one or more catalysts. A gas mixture flowing out of the second tube sections is brought into contact in third tube sections arranged downstream of the second tube sections with a catalyst which has a volumetric activity below the highest volumetric activity of the one or the plurality of catalysts arranged in the second tube sections. A gas mixture from the third tube sections is withdrawn from the shell-and-tube reactor without further catalytic conversion.
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