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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
Applicant: LINDE GMBH
Inventor： Mathieu Zellhuber , Martin Schubert , Andreas Meiswinkel
CPC classification number: C07C5/333 , B01J8/06 , B01J2208/00017
Abstract: 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
Applicant: LINDE GMBH
Inventor： Mathieu Zellhuber , Michael Horenz , Tobias Sinn , Sebastian Mayer
Abstract: 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
Applicant: LINDE GMBH , Clariant International Ltd.
Inventor： Mathieu Zellhuber , Martin Schubert , Andreas Meiswinkel , Wolfgang Muller , Ernst Haidegger , Gerhard Mestl , Klaus Wanninger , Peter Scheck
CPC classification number: C07C5/48 , B01J8/067 , B01J2208/0053 , B01J2208/065 , C07C2523/22 , C07C2523/28
Abstract: 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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公开(公告)号：US20230116690A1
公开(公告)日：2023-04-13
申请号：US17906171
申请日：2021-03-11
Applicant: LINDE GMBH , BASF SE
Inventor： Heinz Posselt , Mathieu Zellhuber , Martin Hofstätter , Clara Delhomme-Neudecker , Andrey Shustov , Eric Jenne , Kiara Aenne Kochendörfer , Heinrich Laib , Reiner Jacob , Heinz-Jürgen Kühn
Abstract: A reactor for carrying out a chemical reaction, which has a reactor vessel and one or more reaction tubes, wherein power input elements for electrical heating of the reaction tube(s) are guided into the reactor vessel. It is provided that the power input elements each have a rod-shaped section that, in each case, runs at a wall passage through a wall of the reactor vessel in such a way that a connection chamber into which the rod-shaped sections project is arranged outside the reactor vessel and adjacently to the wall of the reactor vessel through which the rod-shaped sections run at their wall passages, and that cooling panels through which a cooling fluid can flow are provided in the connection chamber and are arranged between at least two or between at least two groups of the rod-shaped sections that project into the connection chamber.
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