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公开(公告)号：US20240216861A1
公开(公告)日：2024-07-04
申请号：US18271875
申请日：2022-01-05
Applicant: BASF SE
Inventor： Andreas WOELFERT , Michael LORENZ , Gerrit WATERS , Marcu REBLE , Holger FRIEDRICH , Andreas WEICKGENANNT , Wolfgang GMEINER
CPC classification number: B01D53/8625 , B01D53/343 , B01D53/8696 , B01D2257/402
Abstract: The invention relates to a process for decomposing nitrous oxide from a gas stream (1). comprising: (a) heating the gas stream (1) and splitting the gas stream (1) into at least two partial streams (3, 5) or splitting the gas stream (1) into at least two partial streams (3, 5) and heating the partial streams (3, 5): (b) feeding each of the partial streams (3, 5) into a separate decomposition reactor, wherein each reactor (31) comprises a catalyst: (c) decomposing the nitrous oxide into nitrogen and oxygen in the decomposition reactors to obtain purified streams (13, 15): (d) optionally feeding each purified stream (13, 15) into a unit (11) for decomposing nitrogen dioxide and/or nitrogen monoxide or combining at least two purified streams (13, 15) and feeding the combined purified streams into a unit (11) for decomposing nitrogen dioxide and/or nitrogen monoxide, wherein the catalysts of the decomposition reactors (31) are changed alternatingly and wherein one of the catalysts is changed when the arithmetic mean of the lifetime of the catalysts in the other reactors has reached 25 to 75% of the lifetime of one catalyst.
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公开(公告)号：US20180305210A1
公开(公告)日：2018-10-25
申请号：US15779347
申请日：2016-11-18
Applicant: BASF SE
Inventor： Gerhard OLBERT , Jochen GAUER , Holger FRIEDRICH , Andreas SPIEGEL , Andreas WÖLFERT , Wolfgang GMEINER , Michael LORENZ
CPC classification number: C01B21/28 , B01J10/007 , B01J19/2485 , C01B21/26 , C01B21/38
Abstract: The present invention relates to a reactor R with apparatus D, the latter comprising a gas- and/or liquid-permeable tray B, in the edge region of which there is disposed a lateral boundary W which fully encloses the tray B and forms a volume V comprising catalytic and/or noncatalytic shaped bodies (F), wherein there is at least one braid made of precious metal and/or base metal on the upstream side opposite the tray B, and the catalytic and/or noncatalytic shaped bodies (F) are selected from (i) shaped bodies (F1) in the form of straight prisms, the footprint of which is selected from triangle, rectangle, hexagon or fragments of these polygons, and (ii) a combination of the shaped bodies (F1) with shaped bodies (F2) that are smaller than the shaped bodies (F1), wherein groups of m to n shaped bodies (F1), m and n being an integer from 3 to 30 with n>m, are framed in a metal cassette open in the upstream direction and closed in the downstream direction by a gas-permeable tray, in a virtually seamless manner with side face to side face and with their longitudinal axis aligned in vertical direction, virtually completely covering the cross section of the tray, to form modules (M), and the modules (M), optionally with cooperation of a joint filler material, with vertical alignment of the longitudinal axis of the shaped bodies (F1), are joined to one another virtually seamlessly in a mosaic-like manner such
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公开(公告)号：US20240216862A1
公开(公告)日：2024-07-04
申请号：US18271877
申请日：2022-01-05
Applicant: BASF SE
Inventor： Andreas WÖLFERT , Michael LORENZ , Gerrit WATERS , Marcus REBLE , Holger FRIEDRICH , Andreas WEICKGENANNT , Wolfgang GMEINER
CPC classification number: B01D53/8625 , B01D53/343 , B01D53/8696 , B01D2257/402
Abstract: The invention relates on a process for working-up a nitrous oxide comprising off-gas stream from a production process of adipic acid by decomposing the nitrous oxide contained in the off-gas stream into nitrogen and oxygen in a fixed bed reactor (21) of a N2O decomposition unit (9) at a temperature in the range from 430 to 800° C. to obtain a purified gas, wherein for controlling the N2O decomposition unit (9) a nonlinear model predictive control is used which is based on a reactor model of the fixed bed reactor based on equations of energy transport and species transport for nitrogen, oxygen and N2O.
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公开(公告)号：US20160200575A1
公开(公告)日：2016-07-14
申请号：US14911952
申请日：2014-08-06
Applicant: BASF SE
Inventor： Gerhard OLBERT , Holger FRIEDRICH , Andreas WÖLFERT , Robert KUHN , Tobias LENKE , Wolfgang GMEINER
CPC classification number: C01B21/38 , B01J8/008 , B01J8/025 , B01J8/0285 , B01J2208/00495 , B01J2208/00814 , B01J2208/00884 , C01B21/20 , C01B21/265 , C01B21/28
Abstract: A device D accommodated in a reactor R and containing a gas- and/or liquid-permeable bottom B, in the peripheral region of which is arranged a lateral boundary W which completely surrounds the bottom B and forms a volume V which is partially or completely filled with catalytic and/or non-catalytic moldings, there optionally being located on the side facing the bottom B in the upstream direction at least one noble metal and/or non-noble metal fabric, wherein a thermal insulation layer S is located on at least part of the surface of the inner side of the lateral boundary W of the device D, the material for the thermal insulation layer S being selected from the group consisting of ceramic material, microporous material and silicate fibers.
Abstract translation: 容纳在反应器R中并且包含气体和/或液体可渗透底部B的装置D布置在其周边区域中，该侧部边缘W完全围绕底部B并形成部分或完全的体积V 填充有催化和/或非催化模制品，任选地在上游方向上位于面向底部B的一侧上的至少一种贵金属和/或非贵金属织物，其中绝热层S位于 装置D的横向边界W的内侧表面的最小部分，绝热层S的材料选自陶瓷材料，微孔材料和硅酸盐纤维。
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