知搜-全球专利检索

  1. 登录
  2. 注册

搜索结果

33 条记录 (耗时 0.017 秒)

    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：US10421700B2

    公开(公告)日：2019-09-24

    申请号：US15561711

    申请日：2016-03-23

    申请人： BASF SE ,  Linde AG

    发明人： Jan Pablo Josch ,  Ragavendra Prasad Balegedde Ramachandran ,  Christian Walsdorff ,  Regina Benfer ,  Anton Wellenhofer ,  Ulrike Wenning ,  Heinz Boelt ,  Hendrik Reyneke ,  Christine Toegel

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

    摘要： The invention relates to a process for producing butadiene from n-butenes which comprises the steps of: A) providing a vaporous n-butenes-comprising input gas stream a1 by evaporating a liquid n-butenes-comprising stream a0; B) introducing the vaporous n-butenes-comprising input gas stream a1 and an at least oxygenous gas 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) chilling the product gas stream b by contacting with a cooling medium comprising an organic solvent in at least one chilling zone, the cooling medium being at least partially recycled into the chilling zone, Cb) compressing the chilled product gas stream b which is possibly depleted of high-boiling secondary components in at least one compression stage to obtain 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, D) removing noncondensable 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 absorbing the C4 hydrocarbons comprising butadiene and n-butenes into an absorption medium to obtain a C4-hydrocarbons-laden absorption medium stream and the gas stream d2 and subsequently desorbing the C4 hydrocarbons from the laden absorption medium stream to obtain a C4 product gas stream d1, wherein at least some of the recycled cooling medium from step Ca) is brought into thermal contact with the liquid n-butenes-comprising stream a0 in one or more indirect heat exchangers and at least some of the liquid n-butenes-comprising stream a0 is evaporated by indirect heat transfer with the recycled cooling medium.

    Method for producing 1,3-butadiene by dehydrogenating n-butenes, a material flow containing butanes and 2-butenes being provided
    6.
    发明授权
    Method for producing 1,3-butadiene by dehydrogenating n-butenes, a material flow containing butanes and 2-butenes being provided 有权

    公开(公告)号：US10384990B2

    公开(公告)日：2019-08-20

    申请号：US15525330

    申请日：2015-11-09

    申请人： BASF SE ,  Linde AG

    发明人： Jan Ungelenk ,  Philipp Grüne ,  Christian Walsdorff ,  Jan Pablo Josch ,  Michael Bender

    IPC分类号： C07C5/48 ,  C07C2/10 ,  C07C2/62 ,  C07C6/04 ,  C07C7/08 ,  C07C7/11 ,  C07C2/06 ,  C07C2/56 ,  C07C9/16 ,  C07C11/06 ,  C07C11/167

    摘要： 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.

    Process for preparing an unsaturated aldehyde and/or an unsaturated carboxylic acid
    8.
    发明授权
    Process for preparing an unsaturated aldehyde and/or an unsaturated carboxylic acid 有权
    制备不饱和醛和/或不饱和羧酸的方法

    公开(公告)号：US09169188B2

    公开(公告)日：2015-10-27

    申请号：US14536969

    申请日：2014-11-10

    申请人： BASF SE

    发明人： Josef Macht ,  Christian Walsdorff ,  Cornelia Katharina Dobner ,  Cathrin Alexandra Welker-Nieuwoudt ,  Ulrich Hammon

    IPC分类号： C07C51/16 ,  C07C51/42 ,  C07C51/25 ,  B01J23/887 ,  C07C45/35

    CPC分类号： C07C51/252 ,  B01J23/8876 ,  C07C45/35 ,  C07C47/22 ,  C07C57/04

    摘要： An α,β-unsaturated aldehyde and/or an α,β-unsaturated carboxylic acid are prepared by gas phase oxidation of alkene with molecular oxygen over a fixed catalyst bed comprising a bed of hollow cylindrical shaped catalyst bodies having a multimetal oxide active composition. The fixed catalyst bed comprises at least three successive reaction zones; the highest local temperature in the fixed catalyst bed does not occur in the reaction zone closest to the reactor outlet; the highest local temperature in the fixed catalyst bed does not occur in the reaction zone closest to the reactor inlet; and the value WT=(ED−ID)/2 in the reaction zone in which the highest local temperature in the fixed catalyst bed occurs is lower than in the other reaction zones, in which ED is the external diameter and ID is the internal diameter of the shaped catalyst body. The yield of the products of value is enhanced in this way.

    摘要翻译： 通过在固定的催化剂床上用分子氧气气氧化烯烃制备α，β-不饱和醛和/或α，β-不饱和羧酸，所述催化剂床包含具有多金属氧化物活性的中空圆柱形催化剂体床 组成。 固定的催化剂床包括至少三个连续的反应区; 在最接近反应器出口的反应区域内不会发生固定催化剂床中最高的局部温度; 固定催化剂床中最高的局部温度不会在最接近反应器入口的反应区中发生; 在固定催化剂床中发生最高局部温度的反应区域中的值WT =（ED-ID）/ 2低于其他反应区域，其中ED为外径，ID为内径 的成形催化剂体。 以这种方式提高了产品的产量。

    Process for Preparing 1,3-Butadiene from N-Butenes by Oxidative Dehydrogenation
    9.
    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

    申请人： BASF SE

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

    IPC分类号： C07C7/05 ,  C07C5/48

    CPC分类号： C07C7/05 ,  C07C5/48 ,  C07C7/08 ,  C07C7/11 ,  C07C11/167

    摘要： 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.

    摘要翻译： 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。