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    PROCESS FOR PREPARING 1,3-BUTADIENE FROM N-BUTENES BY OXIDATIVE DEHYDROGENATION
    12.
    发明申请
    PROCESS FOR PREPARING 1,3-BUTADIENE FROM N-BUTENES BY OXIDATIVE DEHYDROGENATION 审中-公开

    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.

    PROCESS FOR PREPARING 1,3-BUTADIENE FROM N-BUTENES BY OXIDATIVE DEHYDROGENATION
    13.
    发明申请
    PROCESS FOR PREPARING 1,3-BUTADIENE FROM N-BUTENES BY OXIDATIVE DEHYDROGENATION 有权
    通过氧化脱氢制备N-丁烯的1,3-丁二烯的方法

    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.

    A PROCESS FOR PREPARING AT LEAST ONE AROMATIC ISOCYANATE
    14.
    发明申请
    A PROCESS FOR PREPARING AT LEAST ONE AROMATIC ISOCYANATE 有权

    公开(公告)号：US20240383822A1

    公开(公告)日：2024-11-21

    申请号：US18692911

    申请日：2022-09-19

    Applicant: BASF SE

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

    IPC: C07B43/10 ,  B01J19/24

    Abstract: A chemical process for preparing at least one aromatic isocyanate, said process comprising n chemical sub-processes sp(i), wherein a sub-process sp(i) is carried out in a chemical processing sub-unit U(i), i=1 . . . n, n≥1, wherein during a regular operating mode of a sub-unit U(i), the sub-process sp(i) being carried out in said sub-unit U(i) comprises feeding an educt composition E(i) comprising at least one aromatic compound ZjE(i), j≥(i), into said sub-unit U(i), processing said composition E(i) in said sub-unit U(i) and obtaining a product composition P(i) comprising at least one aromatic compound Zkp(i), k≥1, wherein the chemical process comprises starting up said sub-process sp(i) in said sub-unit U(i), wherein said starting-up comprises processing a chemical start-up composition S(i) in said sub-unit U(i), wherein said S(i) #E(i) and wherein said S(i) comprises at least one of the aromatic compounds Zkp(i).

    PHOSGENE PRODUCTION UNIT
    15.
    发明公开
    PHOSGENE PRODUCTION UNIT 审中-公开

    公开(公告)号：US20230278000A1

    公开(公告)日：2023-09-07

    申请号：US18017679

    申请日：2021-07-27

    Applicant: BASF SE

    Inventor： Jan Pablo JOSCH ,  Stefan ENGELS

    IPC: B01J19/24 ,  C01B32/80

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

    Abstract: A unit for producing and/or processing phosgene, preferably for producing and processing phosgene, said unit being configured for at least one production mode and at least one maintenance mode and comprising a structure which defines a confined space in a production mode, wherein (i) the confined space contains at least one apparatus for producing phosgene, or for processing phosgene, or for producing and processing phosgene; (ii) the structure comprises at least one openable and lockable transfer means for temporary removal, in a maintenance mode, of at least part of at least one apparatus according to (i) from the structure through at least one of said transfer means in opened state.

    PROCESS FOR PREPARING 1,3-BUTADIENE FROM N-BUTENES BY OXIDATIVE DEHYDROGENATION
    16.
    发明申请
    PROCESS FOR PREPARING 1,3-BUTADIENE FROM N-BUTENES BY OXIDATIVE DEHYDROGENATION 审中-公开

    公开(公告)号：US20180072638A1

    公开(公告)日：2018-03-15

    申请号：US15561623

    申请日：2016-03-14

    Applicant: BASF SE ,  Linde AG

    Inventor： Jan Pablo JOSCH ,  Stephan DEUBLEIN ,  Regina BENFER ,  Friedemann GAITZSCH ,  Hendrik REYNEKE ,  Christine TOEGEL ,  Ulrike WENNING ,  Anton WELLENHOFER ,  Heinz BOELT

    IPC: C07C5/48 ,  C07C7/11 ,  C07C7/09 ,  C07C7/08 ,  C07C7/00 ,  C07C11/167

    CPC classification number: C07C5/48 ,  C07C7/005 ,  C07C7/08 ,  C07C7/09 ,  C07C7/11 ,  C07C11/167

    Abstract: The invention relates to a process for producing butadiene from n-butenes, comprising the steps of: A) providing an n-butenes-comprising input gas stream a1, B) feeding the n-butenes-comprising input gas stream al, an oxygenous gas and an oxygenous cycle gas stream a2 into at least one oxidative dehydrogenation zone and oxidatively dehydrogenating n-butenes to butadiene to obtain a product gas stream b comprising butadiene, unconverted n-butenes, steam, oxygen, low-boiling hydrocarbons, high-boiling secondary components, possibly carbon oxides and possibly inert gases, Ca) cooling down the product gas stream b and optionally at least partially removing high-boiling secondary components and steam to obtain a product gas stream b′, Cb) compressing and cooling the product gas stream b′ in at least one compression and cooling stage to obtain at least one aqueous condensate stream c1 and one gas stream c2 comprising butadiene, n-butenes, steam, oxygen, low-boiling hydrocarbons, possibly carbon oxides and possibly inert gases, Da) absorbing the C4 hydrocarbons comprising butadiene and n-butenes into an aromatic hydrocarbon solvent absorption medium stream A1 in an absorption column K1 and removing noncondensable and low-boiling gas constituents comprising steam, oxygen, low-boiling hydrocarbons, possibly carbon oxides, aromatic hydrocarbon solvent and possibly inert gases as gas stream d2 from the gas stream c2 to obtain a C4 hydrocarbons-laden absorption medium stream A1′ and the gas stream d2 and subsequently desorbing the C4 hydrocarbons from the laden absorption medium stream A1′ to obtain a C4 product gas stream d1, Db) at least partially recycling the gas stream d2 into the oxidative dehydrogenation zone as cycle gas stream a2, wherein said process comprises limiting the content of aromatic hydrocarbon solvent in the cycle gas stream a2 to less than 1 vol % by contacting in a further column K2 the gas stream d2 exiting the removal stage Da) with an at least partially recirculating liquid absorption medium stream A2 for the aromatic hydrocarbon solvent A1, and limiting the water content of the liquid absorption medium stream A2 in the column K2 to no more than 80 wt %.

    PROCESS FOR PREPARING 1,3-BUTADIENE FROM N-BUTENES BY OXIDATIVE DEHYDROGENATION
    17.
    发明申请
    PROCESS FOR PREPARING 1,3-BUTADIENE FROM N-BUTENES BY OXIDATIVE DEHYDROGENATION 审中-公开

    公开(公告)号：US20180002254A1

    公开(公告)日：2018-01-04

    申请号：US15514077

    申请日：2015-09-14

    Applicant: BASF SE ,  Linde AG

    Inventor： Jan Pablo JOSCH ,  Philipp GRÜNE ,  Regina BENFER ,  Maximilian VICARI ,  Andre BIEGNER ,  Gergor BLOCH ,  Heinz BOELT ,  Hendrik REYNEKE ,  Christine TOEGEL ,  Ulrike WENNING

    IPC: C07C5/48 ,  B01D3/40

    CPC classification number: C07C5/48 ,  B01D3/40 ,  C07C5/333 ,  C07C7/005 ,  C07C7/05 ,  C07C7/08 ,  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 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 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 with a cooling medium in at least one cooling zone, the cooling medium being at least partly recycled and having an aqueous phase and an organic phase, Cb) compressing the cooled product gas stream b which may have been depleted of high-boiling secondary components 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; D) 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 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 with a butadiene-selective solvent into a stream e1 comprising butadiene and the selective solvent and a stream e2 comprising n-butenes; F) distilling the stream e1 comprising butadiene and the selective solvent into a stream f1 consisting essentially of the selective solvent and a stream f2 comprising butadiene, wherein stage Cb) comprises at least two compression stages Cba) and at least two cooling stages Cbb) configured in the form of quench columns, the cooling in the cooling stages being effected by direct contacting with a biphasic cooling medium having an aqueous phase and an organic phase.

    METHOD OF STARTING UP A REACTOR FOR THE OXIDATIVE DEHYDROGENATION OF N-BUTENES
    18.
    发明申请
    METHOD OF STARTING UP A REACTOR FOR THE OXIDATIVE DEHYDROGENATION OF N-BUTENES 审中-公开
    启动N-BUTEN的氧化脱氢反应器的方法

    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.

    METHOD FOR PRODUCING 1,3-BUTADIEN FROM N-BUTENES BY MEANS OF AN OXIDATIVE DEHYDROGENATION
    19.
    发明申请
    METHOD FOR PRODUCING 1,3-BUTADIEN FROM N-BUTENES BY MEANS OF AN OXIDATIVE DEHYDROGENATION 审中-公开
    通过氧化脱氢生产1,3-丁二烯的方法

    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。

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