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1. 发明申请

US20070167661A1 Method for the production of butadiene 有权
标题翻译：生产丁二烯的方法
公开(公告)号：US20070167661A1
公开(公告)日：2007-07-19
申请号：US10584758
申请日：2004-12-30
申请人： Thorsten Johann , Gotz-Peter Schindler , Andreas Brodhagen , Sven Crone , Regina Benfer , Thomas Hill , Mark Duda
发明人： Thorsten Johann , Gotz-Peter Schindler , Andreas Brodhagen , Sven Crone , Regina Benfer , Thomas Hill , Mark Duda
IPC分类号： C07C5/327
CPC分类号： C07C5/333 , C07C5/48 , C07C11/167
摘要： The invention relates to a process for preparing butadiene from n-butane having 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 and nonoxidatively catalytically dehydrogenating n-butane to obtain a product gas stream b comprising n-butane, 1-butene, 2-butene, butadiene, hydrogen, low-boiling secondary constituents and in some cases steam; C) feeding the product gas stream b of the nonoxidative catalytic dehydrogenation and an oxygenous gas into at least one second dehydrogenation zone and oxidatively dehydrogenating 1-butene and 2-butene to obtain a product gas stream c comprising n-butane, 2-butene, butadiene, hydrogen, low-boiling secondary constituents and steam, said product gas stream c having a higher content of butadiene than the product gas stream b; D) removing hydrogen, the low-boiling secondary constituents and steam to obtain a C4 product gas stream d substantially consisting of n-butane, 2-butene and butadiene; E) separating the C4 product gas stream d into a recycle stream e1 consisting substantially of n-butane and 2-butene and a stream e2 consisting substantially of butadiene by extractively distilling and recycling the stream e1 into the first dehydrogenation zone; F) if desired, feeding some or all of the stream e2 consisting substantially of butadiene into a selective hydrogenation zone and selectively hydrogenating butadiene to 1- and/or 2-butene to obtain a stream f comprising 1-butene and 2-butene; G) if desired, feeding the stream f comprising 1-butene and 2-butene into a distillation zone and removing a product of value stream g1 consisting substantially of 1-butene to leave a stream g2 comprising 2-butene; H) if desired, recycling the stream g2 comprising 2-butene into the first dehydrogenation zone.
摘要翻译：本发明涉及一种从正丁烷制备丁二烯的方法，该方法具有以下步骤：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）进料到至少一个第一脱氢区和非氧化催化脱氢的正丁烷中，以获得包含正丁烷，1-丁烯，2-丁烯，丁二烯，氢，低沸点次生成分，有时还有蒸汽; C）将非氧化催化脱氢的产物气流b和氧气输送到至少一个第二脱氢区，并使1-丁烯和2-丁烯氧化脱氢得到包含正丁烷，2-丁烯，丁二烯，氢，低沸点二次成分和蒸汽，所述产物气流c具有比产物气流b更高含量的丁二烯; D）除去氢气，低沸点次级组分和蒸汽，得到基本上由正丁烷，2-丁烯和丁二烯组成的C 4 H 4产物气流d; E）将C 4 H 4产物气流d分离成基本上由正丁烷和2-丁烯组成的循环流e1和基本上由丁二烯组成的物流e2，通过萃取蒸馏并将流e1再循环到第一个脱氢区; F）如果需要，将基本上由丁二烯组成的一些或全部流e2加入到选择性氢化区中，并将丁二烯选择性氢化为1-和/或2-丁烯，以获得包含1-丁烯和2-丁烯的料流f; 如果需要，将包含1-丁烯和2-丁烯的料流f加入到蒸馏区中并除去基本上由1-丁烯组成的物流g1的产物以留下包含2-丁烯的料流g2; H）如果需要，将包含2-丁烯的料流g2再循环到第一脱氢区中。

2. 发明申请

US20070161842A1 Method for the production of butadiene and 1-butene 有权
标题翻译：制备丁二烯和1-丁烯的方法
公开(公告)号：US20070161842A1
公开(公告)日：2007-07-12
申请号：US10584783
申请日：2004-12-30
申请人： Thorsten Johann , Gotz-Peter Schindler , Andreas Brodhagen , Sven Crone , Regina Benfer , Marcus Sigl , Mark Duda
发明人： Thorsten Johann , Gotz-Peter Schindler , Andreas Brodhagen , Sven Crone , Regina Benfer , Marcus Sigl , Mark Duda
IPC分类号： C07C5/327 , C07C1/00
CPC分类号： C07C5/327 , C07C5/333 , C07C5/48 , C07C11/167
摘要： The invention relates to a process for preparing butadiene from n-butane having 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 and nonoxidatively catalytically dehydrogenating n-butane to obtain a product gas stream b comprising n-butane, 1-butene, 2-butene, butadiene, hydrogen, low-boiling secondary constituents and in some cases steam; C) feeding the product gas stream b of the nonoxidative catalytic dehydrogenation and an oxygenous gas into at least one second dehydrogenation zone and oxidatively dehydrogenating n-butane, 1-butene and 2-butene to obtain a product gas stream c comprising n-butane, 2-butene, butadiene, low-boiling secondary constituents and steam, said product gas stream c having a higher content of butadiene than the product gas stream b; D) removing the low-boiling secondary constituents and steam to obtain a C4 product gas stream d substantially consisting of n-butane, 2-butene and butadiene; E) separating the C4 product gas stream d into a stream e1 consisting substantially of n-butane and 2-butene and a product of value stream e2 consisting substantially of butadiene by extractive distillation; F) feeding the stream e1 consisting substantially of n-butane and 2-butene and a cycle stream g comprising 1-butene and 2-butene into a distillation zone and separating into a 1-butene-rich product of value stream f1, a recycle stream f2 comprising 2-butene and n-butane and a stream f3 comprising 2-butene, and recycling the recycle stream f2 into the first dehydrogenation zone; G) feeding the stream f3 comprising 2-butene into an isomerization zone and isomerizing 2-butene to 1-butene to obtain a cycle stream g comprising 1-butene and 2-butene, and recycling the cycle gas stream g into the distillation zone.
摘要翻译：本发明涉及一种从正丁烷制备丁二烯的方法，该方法具有以下步骤：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）进料到至少一个第一脱氢区和非氧化催化脱氢的正丁烷中，以获得包含正丁烷，1-丁烯，2-丁烯，丁二烯，氢，低沸点次生成分，有时还有蒸汽; C）将非氧化催化脱氢的产物气流b和氧气输送到至少一个第二脱氢区，并使正丁烷，1-丁烯和2-丁烯氧化脱氢得到包含正丁烷的产物气流c，丁二烯，低沸点二次成分和蒸汽，所述产物气流c具有比产物气流b更高含量的丁二烯; D）除去低沸点二次成分和蒸汽，得到基本上由正丁烷，2-丁烯和丁二烯组成的C 4 H 4产物气流d; E）将C 4 H 4产物气流d分离成基本上由正丁烷和2-丁烯组成的物流e1和通过萃取蒸馏基本上由丁二烯组成的价值流e2的产物; F）将基本上由正丁烷和2-丁烯组成的流e1和包含1-丁烯和2-丁烯的循环流g加入到蒸馏区中并分离成价值流f1的富含1-丁烯的产物，再循环包含2-丁烯和正丁烷的料流f2和包含2-丁烯的料流f3，并将再循环料流f2再循环到第一脱氢区中; G）将包含2-丁烯的料流f3进料到异构化区并将2-丁烯异构化成1-丁烯，得到包含1-丁烯和2-丁烯的循环流g，并将循环气流g再循环到蒸馏区中。

3. 发明申请

US20070179330A1 Method for the production of butadiene 有权
标题翻译：生产丁二烯的方法
公开(公告)号：US20070179330A1
公开(公告)日：2007-08-02
申请号：US10584785
申请日：2004-12-30
申请人： Thorsten Johann , Gotz-Peter Schindler , Andreas Brodhagen , Sven Crone , Mark Duda
发明人： Thorsten Johann , Gotz-Peter Schindler , Andreas Brodhagen , Sven Crone , Mark Duda
IPC分类号： C07C5/333 , C07C2/00
CPC分类号： C07C5/333 , C07C5/48 , C07C11/167
摘要： The invention relates to a process for preparing butadiene from n-butane having 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 and nonoxidatively catalytically dehydrogenating n-butane to obtain a product gas stream b comprising n-butane, 1-butene, 2-butene, butadiene, hydrogen, low-boiling secondary constituents and in some cases steam; C) feeding the product gas stream b of the nonoxidative catalytic dehydrogenation and an oxygenous gas into at least one second dehydrogenation zone and oxidatively dehydrogenating 1-butene and 2-butene to obtain a product gas stream c comprising n-butane, 2-butene, butadiene, hydrogen, low-boiling secondary constituents and steam, said product gas stream c having a higher content of butadiene than the product gas stream b; D) removing hydrogen, the low-boiling secondary constituents and steam to obtain a C4 product gas stream d substantially consisting of n-butane, 2-butene and butadiene; E) feeding the C4 product gas stream d into a distillation zone and removing a butadiene/butane mixture as the product of value stream e1, to leave a stream e2 consisting substantially of n-butane and 2-butene; F) recycling the stream e2 into the first dehydrogenation zone.
摘要翻译：本发明涉及一种从正丁烷制备丁二烯的方法，该方法具有以下步骤：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）进料到至少一个第一脱氢区和非氧化催化脱氢的正丁烷中，以获得包含正丁烷，1-丁烯，2-丁烯，丁二烯，氢，低沸点次生成分，有时还有蒸汽; C）将非氧化催化脱氢的产物气流b和氧气输送到至少一个第二脱氢区，并使1-丁烯和2-丁烯氧化脱氢得到包含正丁烷，2-丁烯，丁二烯，氢，低沸点二次成分和蒸汽，所述产物气流c具有比产物气流b更高含量的丁二烯; D）除去氢气，低沸点次级组分和蒸汽，得到基本上由正丁烷，2-丁烯和丁二烯组成的C 4 H 4产物气流d; E）将C 4 H 4产物气流d进料到蒸馏区中并除去作为值流e1的产物的丁二烯/丁烷混合物，以留下基本上由正丁烷和2- 丁烯 F）将流e2再循环到第一脱氢区。

4. 发明授权

US07488858B2 Method for the production of butadiene 有权
标题翻译：生产丁二烯的方法
公开(公告)号：US07488858B2
公开(公告)日：2009-02-10
申请号：US10584785
申请日：2004-12-30
申请人： Thorsten Johann , Götz-Peter Schindler , Andreas Brodhagen , Sven Crone , Mark Duda
发明人： Thorsten Johann , Götz-Peter Schindler , Andreas Brodhagen , Sven Crone , Mark Duda
IPC分类号： C07C5/333
CPC分类号： C07C5/333 , C07C5/48 , C07C11/167
摘要： The disclosure involves a process for preparing butadiene from n-butane. In the process, n-butane is first dehydrogenated autothermally under nonoxidative conditions to form a gas stream. The gas stream is then oxidatively dehydrogenated to form a second gas stream. From the second gas stream, a third gas stream containing n-butane, 2-butene and butadiene is obtained. From the third gas stream, a butadiene/butaine product stream is obtained and remaining n-butane and 2-butene is recycled into the first dehydrogenation zone.
摘要翻译：本公开涉及从正丁烷制备丁二烯的方法。在此过程中，正丁烷首先在非氧化条件下自热脱氢形成气流。然后将气流氧化脱氢以形成第二气流。从第二气流中获得含有正丁烷，2-丁烯和丁二烯的第三气流。从第三气流中获得丁二烯/丁内酯产物流，并将剩余的正丁烷和2-丁烯再循环到第一脱氢区中。

5. 发明授权

US07482500B2 Preparation of butadiene 有权
标题翻译：丁二烯的制备
公开(公告)号：US07482500B2
公开(公告)日：2009-01-27
申请号：US10584758
申请日：2004-12-30
申请人： Thorsten Johann , Götz-Peter Schindler , Andreas Brodhagen , Sven Crone , Regina Benfer , Thomas Hill , Mark Duda
发明人： Thorsten Johann , Götz-Peter Schindler , Andreas Brodhagen , Sven Crone , Regina Benfer , Thomas Hill , Mark Duda
IPC分类号： C07C5/327 , C07C5/32
CPC分类号： C07C5/333 , C07C5/48 , C07C11/167
摘要： The disclosure relates to a process for preparing butadiene. The process involves nonoxidatively catalytically dehydrogenating butane to obtain a product gas stream containing butane, 1-butene, 2-butene, butadiene, hydrogen and secondary constituents. The 1-butene and 2-butene of the product gas stream is then oxidatively dehydrogenated to give a second gas stream containing butane,2-butene, butadiene, hydrogen, steam and secondary constituents. Next, the butane,2-butene and butadiene are separated from the second gas stream and the butane and 2-butene are then separated from the butadiene product. The butane and 2-butene are then recycled into the nonoxidative catalytic dehydrogenating zone.
摘要翻译：本公开涉及一种制备丁二烯的方法。该方法涉及非氧化催化脱氢丁烷，以获得含有丁烷，1-丁烯，2-丁烯，丁二烯，氢和二次成分的产物气流。然后将产物气流的1-丁烯和2-丁烯氧化脱氢，得到含有丁烷，2-丁烯，丁二烯，氢气，蒸汽和二级成分的第二气流。接下来，将丁烷，2-丁烯和丁二烯与第二气流分离，然后从丁二烯产物中分离丁烷和2-丁烯。然后将丁烷和2-丁烯循环到非氧化催化脱氢区。

6. 发明授权

US07488857B2 Method for the production of butadiene and 1-butene 有权
标题翻译：制备丁二烯和1-丁烯的方法
公开(公告)号：US07488857B2
公开(公告)日：2009-02-10
申请号：US10584783
申请日：2004-12-30
申请人： Thorsten Johann , Götz-Peter Schindler , Andreas Brodhagen , Sven Crone , Regina Benfer , Marcus Sigl , Mark Duda
发明人： Thorsten Johann , Götz-Peter Schindler , Andreas Brodhagen , Sven Crone , Regina Benfer , Marcus Sigl , Mark Duda
IPC分类号： C07C5/333
CPC分类号： C07C5/327 , C07C5/333 , C07C5/48 , C07C11/167
摘要： The disclosure involves a process for the preparation of butadiene and 1-butene. The process includes at least a first catalytic dehydrogenation of n-butane to obtain a gas stream which is followed by at least a second oxidative dehydrogenation to form a second gas stream. The second gas stream is then subjected to distillation and isomeration steps to obtain butadiene and 1-butene.
摘要翻译：本公开涉及制备丁二烯和1-丁烯的方法。该方法至少包括正丁烷的第一催化脱氢以获得气流，随后进行至少第二氧化脱氢以形成第二气流。然后将第二气流进行蒸馏和异构化步骤以获得丁二烯和1-丁烯。

7. 发明申请

US20070244349A1 Method for Producing Butadiene From N-Butane 有权
标题翻译：从丁烷生产丁二烯的方法
公开(公告)号：US20070244349A1
公开(公告)日：2007-10-18
申请号：US11718814
申请日：2005-11-11
申请人： Sven Crone , Catharina Klanner , Gotz-Peter Schindler , Mark Duda , Frieder Borgmeier
发明人： Sven Crone , Catharina Klanner , Gotz-Peter Schindler , Mark Duda , Frieder Borgmeier
IPC分类号： C07C5/333 , C07C11/167
CPC分类号： C07C7/09 , C07C5/333 , C07C11/167
摘要： Processes for producing butadiene from n-butane comprising: (a) providing a feed gas stream comprising n-butane; (b) non-oxidatively dehydrogenating the feed gas stream in the presence of a catalyst in a first dehydrogenation zone to form a first intermediate gas stream comprising n-butane, 1-butene, 2-butene, butadiene and hydrogen; (c) oxidatively dehydrogenating the first intermediate gas stream in the presence of an oxygenous gas having an oxygen content of at least 75% by volume in a second dehydrogenation zone to form a second intermediate gas stream comprising n-butane, butadiene, hydrogen, carbon dioxide and steam; (d) compressing and cooling the second intermediate gas to form a first condensate stream comprising water and a third intermediate gas stream comprising n-butane, butadiene, hydrogen, carbon dioxide and steam; (e) compressing and cooling the third intermediate gas to form a second condensate stream comprising n-butane, butadiene and water and a fourth intermediate gas stream comprising n-butane, butadiene, hydrogen and carbon dioxide; (f) cooling the fourth intermediate gas stream to form a third condensate stream comprising n-butane and butadiene, and an offgas stream comprising carbon dioxide and hydrogen; (g) removing water from the second condensate stream and combining the second condensate stream and third condensate stream to form a C4 hydrocarbon stream comprising n-butane and butadiene; and (h) separating the C4 hydrocarbon stream to form a recycle stream comprising n-butane and a product stream comprising butadiene; wherein at least a portion of the recycle stream is fed to the first dehydrogenation zone.
摘要翻译：用于从正丁烷生产丁二烯的方法包括：（a）提供包含正丁烷的进料气流; （b）在催化剂存在下在第一脱氢区中使进料气流非氧化脱氢，以形成包含正丁烷，1-丁烯，2-丁烯，丁二烯和氢的第一中间气流; （c）在第二脱氢区中在氧含量至少为75体积％的氧气存在下，使第一中间气流氧化脱氢以形成包含正丁烷，丁二烯，氢，碳的第二中间气流二氧化碳和蒸汽; （d）压缩和冷却第二中间气体以形成包含水的第一冷凝物流和包含正丁烷，丁二烯，氢气，二氧化碳和蒸汽的第三中间气流; （e）压缩和冷却第三中间气体以形成包含正丁烷，丁二烯和水的第二冷凝物流和包含正丁烷，丁二烯，氢气和二氧化碳的第四中间气流; （f）冷却第四中间气流以形成包含正丁烷和丁二烯的第三冷凝物流和包含二氧化碳和氢气的废气流; （g）从第二冷凝物流中除去水并将第二冷凝物流和第三冷凝物流合并以形成包含正丁烷和丁二烯的C 4烃流; 和（h）分离C 4 O 4烃流以形成包含正丁烷和包含丁二烯的产物流的再循环料流; 其中所述再循环流的至少一部分被供给到所述第一脱氢区。

8. 发明申请

US20080097133A1 Method For The Production Of Butadine From N-Butane 有权
标题翻译：从丁烷生产丁二烯的方法
公开(公告)号：US20080097133A1
公开(公告)日：2008-04-24
申请号：US11721240
申请日：2005-12-07
申请人： Sven Crone , Catharina Klanner , Gotz-Peter Schindler , Mark Duda , Frieder Borgmeier
发明人： Sven Crone , Catharina Klanner , Gotz-Peter Schindler , Mark Duda , Frieder Borgmeier
IPC分类号： C07C5/333
CPC分类号： C07C11/167 , C07C5/48
摘要： A process for preparing butadiene from n-butane, comprising 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 and nonoxidatively, catalytically dehydrogenating n-butane to obtain a gas stream b comprising n-butane, 1-butene, 2-butene, butadiene and hydrogen, with or without carbon dioxide and with or without steam; C) feeding the gas stream b and an oxygenous gas into at least one second dehydrogenation zone and oxidatively dehydrogenating 1-butene and 2-butene to obtain a gas stream c comprising n-butane, butadiene, hydrogen, carbon dioxide and steam, D) compressing in at least one first compression stage and cooling the gas stream c to obtain at least one condensate stream d1 comprising water and a gas stream d2 comprising n-butane, butadiene, hydrogen, carbon dioxide and steam, E) separating the gas stream d2 by extractive distillation into a product stream e1 consisting substantially of butadiene and a stream e2 comprising n-butane, hydrogen, carbon dioxide and steam, F) compressing in at least one further compression stage and cooling the gas stream e2 to obtain at least one condensate stream f1 comprising n-butane and water, and a gas stream f2 comprising n-butane, hydrogen and carbon dioxide, G) cooling the gas stream f2 to obtain a condensate stream g1 comprising n-butane and an offgas stream g2 comprising carbon dioxide and hydrogen, H) removing water from the at least one condensate stream f1 and, if appropriate, from the condensate stream g1 by phase separation to obtain at least one recycle stream hi comprising n-butane and at least one wastewater stream h2, and recycling the at least one recycle stream h1 into the first dehydrogenation zone.
摘要翻译：一种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进料到至少一个第一脱氢区和非氧化催化脱氢的正丁烷中，以获得包含正丁烷，1-丁烯，2-丁烯，丁二烯和氢的气流b，有或没有二氧化碳，有或没有蒸汽; C）将气流b和氧气送入至少一个第二脱氢区并使1-丁烯和2-丁烯氧化脱氢得到包含正丁烷，丁二烯，氢气，二氧化碳和蒸汽的气流c，D）在至少一个第一压缩级中压缩并冷却气流c以获得至少一个包含水的冷凝物流d 1和包含正丁烷，丁二烯，氢气，二氧化碳和蒸汽的气流d 2，E）将气体分离流d 2通过萃取蒸馏成基本上由丁二烯组成的产物流e 1和包含正丁烷，氢气，二氧化碳和蒸汽的流e 2，F）在至少一个另外的压缩级中压缩并冷却气流e 2 以获得包含正丁烷和水的至少一个冷凝物流f 1和包含正丁烷，氢气和二氧化碳的气流f 2，G）冷却气流f 2以获得包含正丁烷和水的冷凝物流g 1，丁烷和废气流g 2包括二氧化碳和氢气，H）从至少一个冷凝物流f 1中除去水，如果合适的话，通过相分离从冷凝物流g 1中除去水，以获得至少一个包含正丁烷和至少一个废水流h 2，并将所述至少一个循环流h 1再循环到第一脱氢区中。

9. 发明申请

US20080183024A1 Method for Producing Butadiene from N-Butane 失效
标题翻译：从丁烷生产丁二烯的方法
公开(公告)号：US20080183024A1
公开(公告)日：2008-07-31
申请号：US11813935
申请日：2006-01-16
申请人： Catharina Klanner , Gotz-Peter Schindler , Sven Crone , Frieder Borgmeier , Mark Duda , Falk Simon
发明人： Catharina Klanner , Gotz-Peter Schindler , Sven Crone , Frieder Borgmeier , Mark Duda , Falk Simon
IPC分类号： C07C5/327
CPC分类号： C07C5/3337 , C07C7/08 , C07C11/167
摘要： A process for preparing butadiene from n-butane, comprising 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 and nonoxidatively catalytically dehydrogenating n-butane to obtain a product gas stream b comprising n-butane, 1-butene, 2-butene, butadiene, hydrogen and low-boiling secondary constituents, with or without carbon oxides and with or without steam; C) feeding the product gas stream b of the nonoxidative catalytic dehydrogenation and an oxygenous gas into at least one second dehydrogenation zone and oxidatively dehydrogenating n-butane, 1-butene and 2-butene to obtain a product gas stream c comprising n-butane, 2-butene, butadiene, low-boiling secondary constituents, carbon oxides and steam, said product gas stream c having a higher content of butadiene than product gas stream b; D) removing the low-boiling secondary constituents and steam to obtain a C4 product gas stream d substantially consisting of n-butane, 2-butene and butadiene; E) separating the C4 product gas stream d into a stream e1 consisting substantially of n-butane and 2-butene and a product-of-value stream e2 consisting substantially of butadiene by extractive distillation; F) recycling stream e1 into the first dehydrogenation zone.
摘要翻译：一种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进料到至少一个第一脱氢区和非氧化催化脱氢的正丁烷中，以获得包含正丁烷，1-丁烯，2-丁烯，丁二烯，氢和低沸点二次成分，有或没有碳氧化物，有或没有蒸汽; C）将非氧化催化脱氢的产物气流b和氧气输送到至少一个第二脱氢区，并使正丁烷，1-丁烯和2-丁烯氧化脱氢得到包含正丁烷的产物气流c，丁二烯，低沸点二次成分，碳氧化物和蒸汽，所述产物气流c具有比产物气流b更高的丁二烯含量; D）除去低沸点二次成分和蒸汽，得到基本上由正丁烷，2-丁烯和丁二烯组成的C 4 H 4产物气流d; E）通过萃取蒸馏将C 4 S 4产物气流d分离成基本上由正丁烷和2-丁烯组成的流e 1和基本上由丁二烯组成的价值产物流e 2; F）将流e 1再循环到第一脱氢区。

10. 发明申请

US20080119680A1 Method for Producing Butadiene from N-Butane 有权
公开(公告)号：US20080119680A1
公开(公告)日：2008-05-22
申请号：US11722278
申请日：2005-12-19
申请人： Sven Crone , Catharina Klanner , Gotz-Peter Schindler , Mark Duda , Frieder Borgmeier
发明人： Sven Crone , Catharina Klanner , Gotz-Peter Schindler , Mark Duda , Frieder Borgmeier
IPC分类号： C07C5/333
CPC分类号： C07C5/333 , C07C11/167
摘要： A process for preparing butadiene from n-butane, comprising 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 and nonoxidatively, catalytically dehydrogenating n-butane to obtain a gas stream b comprising n-butane, 1-butene, 2-butene, butadiene and hydrogen, with or without steam, with or without carbon oxides and with or without inert gases; C) feeding the gas stream b and an oxygenous gas into at least one second dehydrogenation zone and oxidatively dehydrogenating 1-butene and 2-butene to obtain a gas stream c comprising n-butane, butadiene, hydrogen, steam, with or without carbon oxides and with or without inert gases; D) compressing in at least one first compression stage and cooling the gas stream c to obtain at least one condensate stream d1 comprising water and a gas stream d2 comprising n-butane, butadiene, hydrogen and steam, with or without carbon oxides and with or without inert gases; E) separating the gas stream d2 by extractive distillation into a product stream e1 consisting substantially of butadiene and a stream e2 comprising n-butane, hydrogen and steam, with or without carbon oxides and with or without inert gases, F) if appropriate compressing in one or more further compression stages and cooling the gas stream e2 to obtain at least one condensate stream f1 comprising n-butane and water, and a gas stream f2 comprising n-butane and hydrogen, with or without carbon oxides and with or without inert gases, and if appropriate recycling the condensate stream f1 into the first dehydrogenation zone; G) separating the gas stream f2 into a recycle stream g1 comprising n-butane and an offgas stream g2 comprising hydrogen, with or without carbon oxides and with or without inert gases, by contacting the gas stream f2 with a high-boiling absorbent and subsequently desorbing the gas constituents dissolved in the absorbent.

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