公开(公告)号：US20180147561A1

公开(公告)日：2018-05-31

申请号：US15571649

申请日：2016-05-04

Applicant: BASF SE

Inventor： Jan UNGELENK ,  Ulrich HAMMON ,  Kazuhiko AMAKAWA ,  Philipp GRÜNE ,  Christian WALSDORFF

IPC: B01J23/28 ,  B01J23/887 ,  B01J37/08 ,  B01J37/00 ,  C07C5/48 ,  B01J37/04 ,  B01J23/31 ,  B01J35/02 ,  B01J37/02

CPC classification number: B01J23/28 ,  B01J23/31 ,  B01J23/8878 ,  B01J35/023 ,  B01J37/0036 ,  B01J37/0219 ,  B01J37/0221 ,  B01J37/04 ,  B01J37/08 ,  B01J2523/00 ,  C07C5/48 ,  C07C2523/887 ,  B01J2523/13 ,  B01J2523/41 ,  B01J2523/54 ,  B01J2523/67 ,  B01J2523/68 ,  B01J2523/842 ,  B01J2523/845 ,  C07C11/167

Abstract: Process for producing a multimetal oxide catalyst comprising molybdenum, chromium and at least one further metal by mixing of a pulverulent multimetal oxide comprising molybdenum and at least one further metal but no chromium with pulverulent chromium(III) oxide and thermal treatment of the resulting pulverulent mixture in the presence of oxygen at a temperature in the range from 350° C. to 650° C.

公开(公告)号：US20180282246A1

公开(公告)日：2018-10-04

申请号：US15525330

申请日：2015-11-09

Applicant: BASF SE ,  Linde AG

Inventor： Jan UNGELENK ,  Philipp GRÜNE ,  Christian WALSDORFF ,  Jan Pablo JOSCH ,  Michael BENDER

IPC: C07C5/48 ,  C07C11/167 ,  C07C6/04 ,  C07C7/08 ,  C07C7/11 ,  C07C2/06 ,  C07C2/56 ,  C07C11/06 ,  C07C9/16

CPC classification number: C07C5/48 ,  C07C2/06 ,  C07C2/10 ,  C07C2/56 ,  C07C2/62 ,  C07C6/04 ,  C07C7/08 ,  C07C7/11 ,  C07C9/16 ,  C07C11/06 ,  C07C11/167 ,  C07C2521/04 ,  C07C2523/18 ,  C07C2523/28 ,  C07C2523/30 ,  C07C2523/36 ,  C07C2523/755 ,  C07C2527/043 ,  C07C2527/1206 ,  C07C2527/126 ,  C10G7/06 ,  C10G29/205 ,  C10G53/04 ,  C10G2300/1092 ,  C10G2300/305 ,  C10G2400/02 ,  C07C11/08 ,  C07C9/10 ,  C07C9/21 ,  C07C11/02

Abstract: The invention relates to a process for preparing 1,3-butadiene from n-butenes, comprising the steps of: A) providing an input gas stream a comprising butanes, 1-butene, 2-butene and isobutene, with or without 1,3-butadiene, from a fluid catalytic cracking plant; B) removing isobutene from the input gas stream a, giving a stream b comprising butanes, 1-butene and 2-butene, with or without 1,3-butadiene; C) feeding the stream b comprising butanes, 1-butene and 2-butene and optionally an, oxygenous gas and optionally water vapor into at least one dehydrogenating zone and dehydrogenating 1-butene and 2-butene to 1,3-butadiene, giving a product gas stream c comprising 1,3-butadiene, butanes, 2-butene and water vapor, with or without oxygen, with low-boiling hydrocarbons, with high-boiling secondary components, with or without carbon oxides and with or without inert gases; D) cooling and compressing the product gas stream c, giving at least one aqueous condensate stream d1 and a gas stream d2 comprising 1,3-butadiene, butanes, 2-butene and water vapor, with or without oxygen, with low-boiling hydrocarbons, with or without carbon oxides and with or without inert gases; Ea) removing uncondensable and low-boiling gas constituents comprising low-boiling hydrocarbons, with or without oxygen, with or without carbon oxides and with or without inert gases, as gas stream e2 from the gas stream d2 by absorbing the C4 hydrocarbons comprising 1,3-butadiene, butanes and 2-butene in an absorbent, giving an absorbent stream laden with C4 hydrocarbons and the gas stream e2, and Eb) subsequently desorbing the C4 hydrocarbons from the laden absorbent stream, giving a C4 hydrocarbon stream e1; F) separating the C4 hydrocarbon stream e1 by extractive distillation with a 1,3-butadiene-selective solvent into a stream f1 comprising 1,3-butadiene and the selective solvent and a stream f2 comprising butanes and 2-butene, wherein at least 90% of the 1-butene present in stream b is converted in step C) and a product stream f2 comprising butanes and 2-butene is obtained in step F.

公开(公告)号：US20200039901A1

公开(公告)日：2020-02-06

申请号：US16498693

申请日：2018-03-26

Applicant: BASF SE ,  Linde AG

Inventor： Jan UNGELENK ,  Oliver HAMMEN ,  Christian WALSDORFF ,  Rainer ECKRICH ,  Heinz BOELT ,  Christine TOEGEL ,  Ulrike WENNING ,  Hendrik REYNEKE ,  Anton WELLENHOFER

IPC: C07C11/167 ,  C07C7/04 ,  C07C7/11 ,  C07C5/333

Abstract: The invention relates to a process for preparing butadiene from n-butenes in n reactors R1 to Rn operated in parallel, wherein the process in the production phase of a reactor Rm in the n reactors comprises the steps: A) provision of a feed gas stream a1m comprising n-butenes; B) feeding of the feed gas stream a1m comprising n-butenes, an oxygen-comprising gas stream a2m and a substream d2m of an oxygen-comprising total recycle gas stream d2 into the oxidative dehydrogenation zone of the reactor and oxidative dehydrogenation of n-butenes to butadiene, giving a product gas substream bm comprising butadiene; C) combination of the product gas substream bm with further product gas substreams to form a total product gas stream b and cooling and compression of the total product gas stream b and condensation of at least part of the high-boiling secondary components, giving at least one aqueous condensate stream c1 and a gas stream c2 comprising butadiene; D) feeding of the gas stream c2 into an absorption zone and separation of incondensable and low-boiling gas constituents as gas stream d from the gas stream c2 by absorption of the C4-hydrocarbons in an absorption medium, giving an absorption medium stream d1 loaded with C4-hydrocarbons and a recycle gas stream d2, and recirculation of a substream d2m of the total recycle gas stream d2 into the reactor Rm, and during the regeneration phase of the reactor Rm further reactors are in the production phase and the regeneration phase of the reactor Rm comprises the steps in the order i) to v): i) reduction of the feed gas stream a1m comprising n-butenes and of the oxygen-comprising gas stream a2m and the feeding of an inert gas stream a4m into the reactor Rm; ii) further reduction of the feed gas stream a1m comprising n-butenes down to 0, reduction of the recycle gas substream d2m and increase of the inert gas stream a4m until the oxygen content in the reactor Rm is from 2 to 3% by volume; iii) regeneration of the catalyst by burning off carbon-comprising deposits at an oxygen content of from 2 to 3% by volume; iv) reduction of the inert gas stream a4m and increase of the recycle gas substream d2m until the oxygen content in the reactor Rm is from 4 to 10% by volume; v) reoxidation of the catalyst at an oxygen content of from 4 to 10% by volume.