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    Process for Preparing 1,3-Butadiene from N-Butenes by Oxidative Dehydrogenation
    1.
    发明申请
    Process for Preparing 1,3-Butadiene from N-Butenes by Oxidative Dehydrogenation 审中-公开
    通过氧化脱氢从N-丁烯制备1,3-丁二烯的方法

    公开(公告)号：US20140200380A1

    公开(公告)日：2014-07-17

    申请号：US14154558

    申请日：2014-01-14

    Applicant: BASF SE

    Inventor： Jan Pablo Josch ,  Philipp Grüne ,  Christian Walsdorff ,  Oliver Hammen ,  Ragavendra Prasad Balegedde Ramachandran

    IPC: C07C7/05 ,  C07C5/48

    CPC classification number: C07C7/05 ,  C07C5/48 ,  C07C7/08 ,  C07C7/11 ,  C07C11/167

    Abstract: The invention relates to a process for preparing butadiene from n-butenes, which comprises the steps: A) provision of a feed gas stream a comprising n-butenes; B) introduction of the feed gas stream a comprising n-butenes and an oxygen-comprising gas 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; Ca) cooling of the product gas stream b by contacting with an organic solvent as coolant, Cb) compression of the product gas stream b in at least one compression stage, 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) separation of incondensable and low-boiling gas constituents comprising oxygen, low-boiling hydrocarbons, possibly carbon oxides and possibly inert gases as gas stream d2 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 d2, and subsequent desorption of the C4-hydrocarbons from the loaded absorption medium stream to give a C4-product gas stream d1, E) separation of the C4 product stream d1 by extractive distillation using a solvent selective for butadiene into a stream e1 comprising butadiene and the selective solvent and a stream e2 comprising n-butenes; F) distillation of the stream f2 comprising butadiene and the selective solvent to give a stream g1 consisting essentially of the selective solvent and a stream g2 comprising butadiene.

    Abstract translation: 本发明涉及从正丁烯制备丁二烯的方法，其包括以下步骤：A）提供包含正丁烯的进料气流a; B）将包含正丁烯和含氧气体的进料气流a引入至少一个氧化脱氢区和将正丁烯氧化脱氢成丁二烯，得到包含丁二烯，未反应的正丁烯， 水蒸气，氧气，低沸点烃，高沸点次级组分，可能的碳氧化物和可能的惰性气体; Ca）通过与有机溶剂作为冷却剂接触来冷却产物气流b，Cb）在至少一个压缩级中压缩产物气流b，得到至少一种含水冷凝物流c1和包含丁二烯的气流c2， 正丁烯，水蒸气，氧气，低沸点烃，可能的碳氧化物和可能的惰性气体; D）通过吸收包含丁二烯和正丁烯的C 4烃在内，从气体流c2分离包含氧，低沸点烃，可能的碳氧化物和可能的惰性气体的不可冷凝和低沸点气体成分 吸收介质，得到负载有C4-烃和气流d2的吸收介质流，随后将C4-烃从负载的吸收介质流中解吸，得到C4-产物气流d1，E）C4产物的分离 通过使用对丁二烯选择性的溶剂进行萃取蒸馏，将其流入包含丁二烯和选择性溶剂的流e1和包含正丁烯的流e2; F）蒸馏包含丁二烯和选择性溶剂的料流f2，得到基本上由选择性溶剂组成的料流g1和包含丁二烯的料流g2。

    Method for preparing 1,3-butadiene from n-butenes by oxidative dehydrogenation
    3.
    发明授权
    Method for preparing 1,3-butadiene from n-butenes by oxidative dehydrogenation 有权

    公开(公告)号：US10370310B2

    公开(公告)日：2019-08-06

    申请号：US16069553

    申请日：2017-01-11

    Applicant: BASF SE ,  Linde AG

    Inventor： Jan Pablo Josch ,  Georgios Karanikoulis ,  Oliver Hammen ,  Claudia Mossbacher ,  Ulrike Wenning ,  Anton Wellenhofer ,  Christine Toegel ,  Hendrik Reyneke

    IPC: C07C5/48 ,  C07C7/06 ,  C07C7/08 ,  C07C7/11 ,  C07C7/00 ,  C07C7/04

    Abstract: The invention relates to a method for producing butadiene from n-butenes having the steps: A) providing a feed gas stream a comprising n-butenes; B) feeding the feed gas stream a comprising the n-butenes and an oxygen-comprising gas into at least one oxidative dehydrogenation zone and oxidatively dehydrogenating n-butenes to butadiene, wherein a product gas stream b comprising butadiene, unreacted n-butenes, steam, oxygen, low-boiling hydrocarbons, high-boiling minor components, possibly carbon oxides and possibly inert gases is obtained; Ca) cooling the product gas stream b by contacting it with a refrigerant and condensing at least a part of the high-boiling minor components; Cb) compressing the remaining product gas stream b in at least one compression stage, wherein at least one aqueous condensate stream c1 and a gas stream c2 comprising butadiene, n-butenes, steam, oxygen, low-boiling hydrocarbons, possibly carbon oxides and possibly inert gases are obtained; Da) separating off non-condensable and low-boiling gas components comprising oxygen, low-boiling hydrocarbons, possibly carbon oxides and possibly inert gases as gas stream d2 from the gas stream c2 by absorbing the C4 hydrocarbon-comprising butadiene and n-butenes in an absorbent, wherein an absorbent stream loaded with C4 hydrocarbons and the gas stream d2 are obtained, and Db) subsequent desorption of the C4 hydrocarbons from the loaded absorbent stream in a desorption column, wherein a C4 product gas stream d1 is obtained, wherein a polymerization inhibitor is added in step Db) at the column head of the desorption column.

    Process for preparing 1,3-butadiene from N-butenes by oxidative dehydrogenation
    5.
    发明授权
    Process for preparing 1,3-butadiene from N-butenes by oxidative dehydrogenation 有权

    公开(公告)号：US09957208B2

    公开(公告)日：2018-05-01

    申请号：US15503189

    申请日：2015-08-11

    Applicant: BASF SE ,  Linde AG

    Inventor： Philipp Grüne ,  Oliver Hammen ,  Rainer Eckrich ,  Jan Pablo Josch ,  Christian Walsdorff ,  Andre Biegner ,  Gregor Bloch ,  Heinz Boelt ,  Hendrik Reyneke ,  Christine Toegel ,  Ulrike Wenning

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

    CPC classification number: C07C5/48 ,  C07C7/005 ,  C07C7/08 ,  C07C7/09 ,  C07C7/11 ,  C07C2523/887 ,  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 of an organic solvent, wherein the organic solvent is selected from the group consisting of toluene, o-, m- and p-xylene, mesitylene, mono-, di- and triethylbenzene, mono-, di- and triisopropylbenzene and mixtures thereof, and the mass ratio of the aqueous phase to the organic phase in the cooling medium when it is fed into the cooling zones prior to the contacting with the product gas stream being from 0.015:1 to 10:1, 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.

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