公开(公告)号：US20160347686A1

公开(公告)日：2016-12-01

申请号：US15110985

申请日：2015-01-09

Applicant: BASF SE

Inventor： Philipp GRÜNE ,  Gauthier Luc Maurice AVERLANT ,  Ulrich HAMMON ,  Ragavendra Prasad BALEGEDDE RAMACHANDRAN ,  Jan Pablo JOSCH ,  Christian WALSDORFF

IPC: C07C5/48

CPC classification number: C07C5/48 ,  C07C7/005 ,  C07C7/11 ,  C07C11/167

Abstract: The invention relates to a process for preparing butadiene from n-butenes having a start-up phase and an operating phase, wherein the process in the operating phase comprises the steps:A) provision of a feed gas stream a1 comprising n-butenes; B) introduction of the feed gas stream a1 comprising n-butenes, of an oxygen-comprising gas stream a2 and of an oxygen-comprising recycle gas stream d2 into at least one oxidative dehydrogenation zone and oxidative dehydrogenation of n-butenes to butadiene, giving a product gas stream b comprising butadiene, unreacted n-butenes, water vapor, oxygen, low-boiling hydrocarbons, high-boiling secondary components, possibly carbon oxides and possibly inert gases; C) cooling and compression of the 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, n-butenes, water vapor, oxygen, low-boiling hydrocarbons, possibly carbon oxides and possibly inert gases; D) introduction of the gas stream c2 into an absorption zone and separation of incondensable and low-boiling gas constituents comprising oxygen, low-boiling hydrocarbons, possibly carbon oxides and possibly inert gases as gas stream d from the gas stream c2 by absorption of the C4-hydrocarbons comprising butadiene and n-butenes in an absorption medium, giving an absorption medium stream loaded with C4-hydrocarbons and the gas stream d, and recirculation, optionally after separating off a purge gas stream p, of the gas stream d as recycle gas stream d2 to the oxidative dehydrogenation zone; and the start-up phase comprises the steps: i) introduction of the oxygen-comprising gas stream and an inert gas stream into the dehydrogenation zone in such a ratio that the oxygen content of the recycle gas stream d2 corresponds to from 30 to 80% of the oxygen content of the recycle gas stream d2 in the operating phase; ii) setting of the recycle gas stream d2 to at least 70% of the volume flow of the recycle gas in the operating phase; iii) optional introduction, at an initial oxygen content of the recycle gas stream d2 of from 30 to 80% of the oxygen content of the recycle gas stream d2 in the operating phase, of a steam stream a3 into the dehydrogenation zone; iv) introduction, at an initial oxygen content of the recycle gas stream d2 of from 30 to 80% of the oxygen content of the recycle gas stream d2 in the operating phase, of an oxygen-comprising gas stream a2′ and a butene-comprising feed gas stream a1′ having a smaller volume flow than in the operating phase in a ratio k=a2′/a1′ and raising of the volume flow of the gas streams a1′ and a2′ until the volume flows of the gas streams a1 and a2 in the operating phase are obtained, with the recycle gas stream d2 being at least 70% and not more than 120% of the volume flow in the operating phase.

公开(公告)号：US20160152531A1

公开(公告)日：2016-06-02

申请号：US14905497

申请日：2014-07-15

Applicant: BASF SE

Inventor： Christian WALSDORFF ,  Philipp GRÜNE ,  Christine SCHMITT ,  Ragavendra Prasad BALEGEDDE RAMACHANDRAN ,  Jan Pablo JOSCH

IPC: C07C5/48 ,  C07C7/11

CPC classification number: C07C5/48 ,  C07C7/11 ,  C07C11/167

Abstract: The invention relates to a process for preparing butadiene from n-butenes, comprising the steps of: A) providing an input gas stream a comprising n-butenes; B) feeding the input gas stream a comprising n-butenes and an oxygenous gas into at least one oxidative dehydrogenation zone and oxidatively dehydrogenating n-butenes to butadiene, giving a product gas stream b comprising butadiene, unconverted n-butenes, water vapor, oxygen, low-boiling hydrocarbons and high-boiling secondary components, with or without carbon oxides and with or without inert gases; Ca) cooling the product gas stream b by contacting it with a coolant and condensing at least a portion of the high-boiling secondary components; Cb) compressing the remaining product gas stream b in at least one compression stage, giving at least one aqueous condensate stream c1 and one gas stream c2 comprising butadiene, n-butenes, water vapor, oxygen and low-boiling hydrocarbons, with or without carbon oxides and with or without inert gases; Da) removing uncondensable and low-boiling gas constituents comprising oxygen and low-boiling hydrocarbons, with or without carbon oxides and with or without inert gases, as gas stream d2 from the gas stream c2 by absorbing the C4 hydrocarbons comprising butadiene and n-butenes in an absorbent, giving an absorbent stream laden with C4 hydrocarbons and the gas stream d2, and Db) subsequently desorbing the C4 hydrocarbons from the laden absorbent stream, giving a C4 product gas stream d1, which comprises additionally feeding in a methane-comprising gas stream at at least one point in the process section comprising steps B), Ca), Cb) and Da) in such amounts that the formation of an explosive gas mixture in step Da) is avoided.

Abstract translation: 本发明涉及一种从正丁烯制备丁二烯的方法，包括以下步骤：A）提供包含正丁烯的输入气流a; B）将包含正丁烯和含氧气体的输入气流a送入至少一个氧化脱氢区并将正丁烯氧化脱氢成丁二烯，得到包含丁二烯，未转化的正丁烯，水蒸汽，氧气的产物气流b 低沸点碳氢化合物和高沸点二级组分，有或没有碳氧化物和有或没有惰性气体; Ca）通过使产品气流b与冷却剂接触并冷凝至少一部分高沸点次级组分来冷却产物气流b; Cb）在至少一个压缩阶段压缩剩余的产物气流b，得到至少一种含水冷凝物流c1和一种含有或不含碳的丁二烯，正丁烯，水蒸汽，氧和低沸点烃的气流c2 氧化物和有或没有惰性气体; Da）通过吸收包含丁二烯和正丁烯的C 4烃，除去包含氧气和低沸点烃的无碳酸盐和低沸点烃，具有或不具有碳氧化物和有或无惰性气体作为气流d2来自气流c2 在吸收剂中，产生载有C 4烃的吸收剂流，气流d2和Db）随后从负载的吸收剂流中解吸C4烃，得到C4产物气流d1，其包括另外进料含甲烷气体 在包括步骤B），Ca），Cb）和Da）的过程部分中的至少一个点处的流量以使得在步骤Da）中形成爆炸性气体混合物的量被避免。

公开(公告)号：US20240376043A1

公开(公告)日：2024-11-14

申请号：US18692963

申请日：2022-09-19

Applicant: BASF SE

Inventor： Maximilian KOELLER ,  Johannes BUETTNER ,  Ruediger FRITZ ,  Jonas MATTERN ,  Jan Pablo JOSCH

IPC: C07C263/10 ,  B01J19/00

Abstract: A chemical production assembly for producing an isocyanate. comprising n serially arranged units U (i), i=1 . . . n, n≥2. wherein a unit U(i) is for preparing a chemical product cp(i) at a preparation rate PR(i) by using, as starting material. a chemical product cp(i+1) preprared in the unit U(i+1) ar—ranged upstream of said unit U(i), wherein said unit U(i) comprises an inlet means for receiving said chemical product cp(i+1) at an input rate IR(i). said unit U(i) being characterized by a nominal preparation rate PRN(i) and a nominal input rate IRN(i); and a unit U(i+1), i=1 . . . n-1, is for preparing the chemical product cp(i+1) and for supplying said chemical product cp(i+1) to the inlet means of the unit U(i) arranged downstream of said unit U(i+1) at a supply rate SR(i+1) with SR(i+1)=IR(i).

公开(公告)号：US20240368335A1

公开(公告)日：2024-11-07

申请号：US18562515

申请日：2022-05-24

Applicant: BASF SE

Inventor： Jens FERBITZ ,  Jan Pablo JOSCH ,  Kai THIELE ,  Torsten MATTKE

IPC: C08G18/65 ,  C08G18/38

Abstract: The present invention relates to a process for preparing at least one polyisocyanate R(—NCO)x, the process comprising preparing a mixture R1 comprising at least one polyamine R(—NH2)x, with x=2 or more, in a first reaction zone Z1; passing at least a portion P1 of the mixture R1, P1 comprising R(—NH2)x, into a storing device D1 and storing P1 in D1 for a period of time Δt1; removing, after storing for Δt1, at least a portion P2 of P1, P2 comprising R(—NH2)x, from D1; passing P2 into a reaction zone Z2; and reacting, in Z2, R(—NH2)x comprised in P2 with phosgene, obtaining a mixture R2 comprising the at least one polyisocyanate R(—NCO)x; wherein Δt1 is in the range of from 1 minute to 7 d.

公开(公告)号：US20240317590A1

公开(公告)日：2024-09-26

申请号：US18580641

申请日：2022-07-13

Applicant: BASF SE

Inventor： Jan Pablo JOSCH ,  Stefan ENGELS ,  Gerhard OLBERT ,  Torsten MATTKE

IPC: C01B32/80 ,  B01J21/18 ,  B01J37/08

CPC classification number: C01B32/80 ,  B01J21/18 ,  B01J37/08

Abstract: The invention relates to a process for producing phosgene by conversion of chlorine and CO over an activated carbon catalyst, wherein the activated carbon catalyst is dried by reducing the water content, where the drying comprises the following steps:



a) contacting the catalyst with an inert gas stream
b) determining the residual moisture content of the catalyst by determining the moisture content in the offgas stream
c) ending the drying process after attainment of the desired moisture content in the offgas stream by switching from the inert gas to the reaction gases and optionally
d) heating up the catalyst bed and/or the inert gas during the drying process.

公开(公告)号：US20230277999A1

公开(公告)日：2023-09-07

申请号：US18017678

申请日：2021-07-26

Applicant: BASF SE

Inventor： Gerhard OLBERT ,  Stefan ENGELS ,  Jan Pablo JOSCH

IPC: B01J19/24 ,  C01B32/80

CPC classification number: B01J19/24 ,  C01B32/80 ,  B01J2219/00036

Abstract: A unit for producing and processing phosgene, said unit being configured for at least one maintenance mode and at least one production mode and comprising a structure which defines a confined space in a production mode, said confined space being sub-divided into at least two sub-spaces, wherein (i) at least one sub-space contains at least one apparatus for producing phosgene; (ii) at least one sub-space, other than the at least one sub-space according to (i), contains at least one apparatus for processing phosgene; (iii) the structure comprises at least one openable and lockable access means for temporary access of at least one of the apparatuses according to (i) or (ii) from outside the structure in a maintenance mode.

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：US20170334809A1

公开(公告)日：2017-11-23

申请号：US15523862

申请日：2015-11-02

Applicant: BASF SE ,  Linde AG

Inventor： Philipp GRUNE ,  Stephan DEUBLEIN ,  Christian WALSDORFF ,  Jan Pablo JOSCH ,  Rainer RAHM ,  Hendrik REYNEKE ,  Anton WELLENHOFER ,  Ulrike WENNING ,  Christine TOEGEL ,  Heinz BOELT

IPC: C07C5/48 ,  C07C7/04 ,  C07C7/00 ,  C07C7/11 ,  C07C11/167

CPC classification number: C07C5/48 ,  C07C7/005 ,  C07C7/04 ,  C07C7/08 ,  C07C7/11 ,  C07C11/167 ,  C07C2523/31 ,  C07C2523/843 ,  C07C2523/847

Abstract: A process for preparing butadiene from n-butenes, comprising the steps of: A) providing an input gas stream comprising n-butenes; B) feeding the input gas stream comprising n-butenes and a gas containing at least oxygen into at least one oxidative dehydrogenation zone and oxidatively dehydrogenating n-butenes to butadiene, giving a product gas stream; Ca) cooling the product gas stream by contacting with a circulating cooling medium in at least one cooling zone; Cb) compressing the cooled product gas stream in at least one compression stage, giving at least one aqueous condensate stream c1 and one gas stream c2; D) removing uncondensable and low-boiling gas constituents comprising oxygen and low-boiling hydrocarbons as gas stream d2 from the gas stream c2 by absorbing the C4 hydrocarbons in an absorbent, giving an absorbent stream laden with C4 hydrocarbons and the gas stream d2, and then desorbing the C4 hydrocarbons from the laden absorbent stream, giving a C4 product gas stream d1; E) separating the C4 product stream d1 by extractive distillation; F) distilling the stream e1 into a stream f1 consisting essentially of the selective solvent and a stream f2 comprising butadiene; G) removing a portion of the aqueous phase of the cooling medium which circulates in step Ca) as aqueous purge stream g; H) distillatively separating the aqueous purge stream g into a fraction h1 and a fraction h2 depleted of organic constituents.

公开(公告)号：US20160355450A1

公开(公告)日：2016-12-08

申请号：US15033203

申请日：2014-10-27

Applicant: BASF SE

Inventor： Philipp GRÜNE ,  Oliver HAMMEN ,  Christine SCHMITT ,  Ragavendra Prasad BALEGEDDE RAMACHANDRAN ,  Jan Pablo JOSCH ,  Christian WALSDORFF

IPC: C07C5/48 ,  B01J23/00 ,  B01J23/887

CPC classification number: C07C5/48 ,  B01J23/002 ,  B01J23/8878 ,  B01J37/0045 ,  B01J2523/00 ,  C07C7/08 ,  C07C7/11 ,  C07C2523/04 ,  C07C2523/18 ,  C07C2523/26 ,  C07C2523/28 ,  C07C2523/745 ,  C07C2523/75 ,  C07C2523/887 ,  C07C11/167 ,  B01J2523/13 ,  B01J2523/54 ,  B01J2523/67 ,  B01J2523/68 ,  B01J2523/842 ,  B01J2523/845

Abstract: A process for preparing butadiene from n-butenes, comprising the steps of A) providing an input gas stream a1 comprising n-butenes; B) feeding the input gas stream a1 comprising n-butenes, an oxygenous gas and an oxygenous cycle gas stream a2 into at least one oxidative dehydrogenation zone and oxidatively dehydrogenating n-butenes to butadiene, giving a product gas stream b comprising butadiene, unconverted n-butenes, steam, oxygen, low-boiling hydrocarbons and high-boiling secondary components, with or without carbon oxides and with or without inert gases; Ca) cooling the product gas stream b and optionally at least partly removing high-boiling secondary components and steam, giving a product gas stream b′, Cb) compressing and cooling the product gas stream b′ in at least one compression and cooling stage, giving at least one aqueous condensate stream c1 and one gas stream c2 comprising butadiene, n-butenes, steam, oxygen and low-boiling hydrocarbons, with or without carbon oxides and with or without inert gases, Da) absorbing the C4 hydrocarbons comprising butadiene and n-butenes in an aromatic hydrocarbon solvent as an absorbent and removing uncondensable and low-boiling gas constituents comprising oxygen, low-boiling hydrocarbons, any carbon oxides, aromatic hydrocarbon solvent and any inert gases as gas stream d2 from the gas stream c2, giving an absorbent stream laden with C4 hydrocarbons and the gas stream d2, and then desorbing the C4 hydrocarbons from the laden absorbent stream, giving a C4 product gas stream d1, Db) at least partly recycling the gas stream d2 as cycle gas stream a2 into the oxidative dehydrogenation zone, wherein the content of aromatic hydrocarbon solvent in the cycle gas stream a2 is limited to less than 1% by volume.