公开(公告)号：US10144681B2

公开(公告)日：2018-12-04

申请号：US14150239

申请日：2014-01-08

申请人： BASF SE

发明人： Jan Pablo Josch ,  Alexander Weck ,  Sonja Giesa ,  Steffen Bütehorn ,  Ragavendra Prasad Balegedde Ramachandran ,  Regina Benfer ,  Markus Weber

IPC分类号： C07C5/327 ,  C07C5/48 ,  C07C7/08 ,  C07C7/11

摘要： A process for the oxidative dehydrogenation of n-butenes to butadiene is disclosed herein, in which the formation of butadiene peroxides from butadiene in the work-up of the product gas mixture from the oxidative dehydrogenation is effectively prevented.

公开(公告)号：US20140200379A1

公开(公告)日：2014-07-17

申请号：US14150239

申请日：2014-01-08

申请人： BASF SE

发明人： Jan Pablo Josch ,  Alexander Weck ,  Sonja Giesa ,  Steffen Büteborn ,  Ragavendra Prasad Balegedde Ramachandran ,  Regina Benfer ,  Markus Weber

IPC分类号： C07C5/48

CPC分类号： 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 following 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 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, possibly carbon oxides and possibly inert gases; C) cooling and compression of the product gas stream b in at least one compression stage, giving at least one condensate stream c1 comprising water 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 Da) absorption of the C4-hydrocarbons comprising butadiene and n-butenes in a high-boiling absorption medium, giving an absorption medium stream loaded with C4-hydrocarbons and the gas stream d2, Db) removal of oxygen from the absorption medium stream loaded with C4-hydrocarbons by stripping with an inert gas and Dc) desorption of the C4-hydrocarbons from the loaded absorption medium stream to give a C4 product gas stream d1 which consists essentially of C4-hydrocarbons and comprises less than 100 ppm of oxygen; E) separation of the C4 product stream d1 by extractive distillation with a solvent which is 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 e1 comprising butadiene and the selective solvent to give a stream f1 consisting essentially of the selective solvent and a butadiene-comprising stream f2.

公开(公告)号：US20130211166A1

公开(公告)日：2013-08-15

申请号：US13752516

申请日：2013-01-29

申请人： BASF SE

发明人： Sonja Giesa ,  Regina Benfer

IPC分类号： C07C7/11 ,  C07C7/08 ,  C07C5/333

CPC分类号： C07C7/11 ,  C07C5/333 ,  C07C5/48 ,  C07C7/08 ,  C07C11/167

摘要： The process for preparing butadiene from n-butane comprises the steps of A) providing a feed gas stream a comprising n-butane; B) feeding the feed gas stream a comprising n-butane into at least one first dehydrogenation zone; C) compressing in at least one first compression stage and cooling the gas stream b; D) absorbing the butenes and the stream c2 comprising butadiene, n-butane, hydrogen and water vapor, with or without inert gases and with or without carbon oxides, with a selective solvent; E) extractively distilling the selective solvent; F) distilling the selective solvent; G) feeding stream f and an oxygenous gas into at least one second dehydrogenation zone and oxidatively dehydrogenating 1-butene and 2-butenes.

摘要翻译： 从正丁烷制备丁二烯的方法包括以下步骤：A）提供包含正丁烷的进料气流a; B）将包含正丁烷的进料气流a送入至少一个第一脱氢区; C）在至少一个第一压缩级中压缩并冷却气流b; D）用选择性溶剂吸收丁烯和包含丁二烯，正丁烷，氢和水蒸汽的流c2，具有或不具有惰性气体和有或无碳氧化物; E）提取蒸馏选择性溶剂; F）蒸馏选择性溶剂; G）将料流f和氧气送入至少一个第二脱氢区并使1-丁烯和2-丁烯氧化脱氢。

公开(公告)号：US09193647B2

公开(公告)日：2015-11-24

申请号：US13752516

申请日：2013-01-29

申请人： BASF SE

发明人： Sonja Giesa ,  Regina Benfer

IPC分类号： C07C7/11 ,  C07C5/333 ,  C07C7/08 ,  C07C5/48

CPC分类号： C07C7/11 ,  C07C5/333 ,  C07C5/48 ,  C07C7/08 ,  C07C11/167

摘要： The process for preparing butadiene from n-butane comprises the steps of A) providing a feed gas stream a comprising n-butane; B) feeding the feed gas stream a comprising n-butane into at least one first dehydrogenation zone; C) compressing in at least one first compression stage and cooling the gas stream b; D) absorbing the butenes and the stream c2 comprising butadiene, n-butane, hydrogen and water vapor, with or without inert gases and with or without carbon oxides, with a selective solvent; E) extractively distilling the selective solvent; F) distilling the selective solvent; G) feeding stream f and an oxygenous gas into at least one second dehydrogenation zone and oxidatively dehydrogenating 1-butene and 2-butenes.

摘要翻译： 从正丁烷制备丁二烯的方法包括以下步骤：A）提供包含正丁烷的进料气流a; B）将包含正丁烷的进料气流a送入至少一个第一脱氢区; C）在至少一个第一压缩级中压缩并冷却气流b; D）用选择性溶剂吸收丁烯和包含丁二烯，正丁烷，氢和水蒸汽的流c2，具有或不具有惰性气体和有或无碳氧化物; E）提取蒸馏选择性溶剂; F）蒸馏选择性溶剂; G）将料流f和氧气送入至少一个第二脱氢区并使1-丁烯和2-丁烯氧化脱氢。

公开(公告)号：US20140316181A1

公开(公告)日：2014-10-23

申请号：US14186142

申请日：2014-02-21

申请人： BASF SE

发明人： Gauthier Luc Maurice Averlant ,  Alireza Rezai ,  Sonja Giesa ,  Martin Dieterle

IPC分类号： C07C7/10

CPC分类号： C07C7/163 ,  C07C11/167

摘要： In a process for removing oxygen from a C4-hydrocarbon stream comprising free oxygen by catalytic combustion, in which the hydrocarbon stream comprising free oxygen is reacted by catalytic combustion over a catalyst bed in the presence or absence of free hydrogen to give an oxygen-depleted hydrocarbon stream, the catalytic combustion is carried out continuously, the entry temperature in the catalyst bed is at least 300° C. and the maximum temperature in the catalyst bed is not more than 700° C.

摘要翻译： 在通过催化燃烧从包含游离氧的C 4烃流中除去氧气的方法中，其中包含游离氧的烃流在存在或不存在游离氢的情况下通过催化剂床在催化剂床上反应而产生氧耗尽 烃流，催化燃烧持续进行，催化剂床中的入口温度为至少300℃，催化剂床中的最高温度不超过700℃。