EP 3083529 A1 20161026 - PREPARATION OF BUTADIENE BY OXIDATIVE DEHYDROGENATION OF N-BUTENE AFTER PRECEDING ISOMERIZATION
Title (en)
PREPARATION OF BUTADIENE BY OXIDATIVE DEHYDROGENATION OF N-BUTENE AFTER PRECEDING ISOMERIZATION
Title (de)
HERSTELLUNG VON BUTADIEN DURCH OXIDATIVE DEHYDRIERUNG VON N-BUTEN NACH VORHERGEHENDER ISOMERISIERUNG
Title (fr)
PRODUCTION DE BUTADIÈNE PAR DÉSHYDROGÉNATION OXYDATIVE DE N-BUTÈNE APRÈS ISOMÉRISATION PRÉALABLE
Publication
Application
Priority
- DE 102013226370 A 20131218
- EP 2014076569 W 20141204
Abstract (en)
[origin: CA2933757A1] The invention relates to a method for preparing 1,3-butadiene by heterogeneously catalyzed oxidative dehydrogenation of n-butene, wherein a butene mixture is provided that contains at least 2-butene. The problem addressed by the invention is to provide a method for economic production of 1,3-butadiene on a large industrial scale, being provided with a butene mixture as raw material having a 1-butene content therein that is relatively low in comparison to the 2-butene content and wherein the ratio of 1-butene to 2-butene is subject to fluctuations. The solution to this problem is achieved by a two-step procedure, wherein in a first step the provided butene mixture is subjected to a heterogeneously catalyzed isomerization, obtaining an at least partially isomerized butene mixture, and wherein subsequently in a second step the at least partially isomerized butene mixture obtained in the first step is subjected to oxidative dehydrogenation. The two-step process results in higher butadiene yields compared to the one-step process.
IPC 8 full level
C07C 5/25 (2006.01); C07C 5/333 (2006.01); C07C 11/08 (2006.01); C07C 11/167 (2006.01)
CPC (source: EP KR US)
B01J 23/02 (2013.01 - EP KR US); B01J 23/8876 (2013.01 - EP US); B01J 23/92 (2013.01 - KR); B01J 38/12 (2013.01 - EP US); C07C 5/2512 (2013.01 - EP KR US); C07C 5/48 (2013.01 - EP KR US); C07C 11/08 (2013.01 - KR); C07C 11/167 (2013.01 - KR); B01J 23/92 (2013.01 - EP US); B01J 2523/00 (2013.01 - EP US); C07C 2521/04 (2013.01 - EP KR US); C07C 2521/08 (2013.01 - EP KR US); C07C 2521/10 (2013.01 - EP US); C07C 2521/12 (2013.01 - EP US); C07C 2523/02 (2013.01 - EP KR US); C07C 2523/18 (2013.01 - EP KR US); C07C 2523/28 (2013.01 - EP KR US); C07C 2523/887 (2013.01 - US); Y02P 20/584 (2015.11 - EP US)
Citation (search report)
See references of WO 2015090998A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
DE 102013226370 A1 20150618; CA 2933757 A1 20150625; CN 106376236 A 20170201; EP 3083529 A1 20161026; JP 2017507902 A 20170323; KR 20160098383 A 20160818; MX 2016007890 A 20160913; SG 11201604917U A 20160728; TW 201538470 A 20151016; US 2016318829 A1 20161103; WO 2015090998 A1 20150625
DOCDB simple family (application)
DE 102013226370 A 20131218; CA 2933757 A 20141204; CN 201480073529 A 20141204; EP 14806313 A 20141204; EP 2014076569 W 20141204; JP 2016541259 A 20141204; KR 20167018825 A 20141204; MX 2016007890 A 20141204; SG 11201604917U A 20141204; TW 103143913 A 20141216; US 201415106084 A 20141204