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11. 发明申请

WO2010006832A3 PROCESS FOR PRODUCTION OF ISOBUTENE BY CRACKING MTBE-CONTAINING MIXTURES 审中-公开
标题翻译：通过剪切含MTBE的混合物制备异丁醇的方法
公开(公告)号：WO2010006832A3
公开(公告)日：2010-04-15
申请号：PCT/EP2009056069
申请日：2009-05-19
申请人： EVONIK OXENO GMBH , WINTERBERG MARKUS , ROETTGER DIRK , BUKOHL REINER , WIEDERHOLD HOLGER , LUH WALTER
发明人： WINTERBERG MARKUS , ROETTGER DIRK , BUKOHL REINER , WIEDERHOLD HOLGER , LUH WALTER
IPC分类号： C07C1/20 , C07C11/09
CPC分类号： C07C1/20 , C07C7/04 , C07C2521/12 , C07C2523/02 , C07C11/09
摘要： The invention relates to a process for production of isobutene from MTBE-containing mixtures which comprises the following steps a) cracking, in a reactor R, a mixture obtained from an MTBE-containing feedstock (1a) and/or an MTBE-containing stream (13, 5), delivering a stream (6) of reaction products consisting of isobutene, methanol, MTBE and also by-products, wherein these consist of a1) high boilers having a boiling range above 55°C at a pressure of 0.1 MPa; a2) medium boilers having a boiling range from 12 to 55°C at a pressure of 0.1 MPa; and a3) low boilers having a boiling range below 12°C at a pressure of 0.1 MPa; b) separation of stream (6) by distillation into a stream (7) which contains the product isobutene and low boilers and a stream (8) which contains MTBE, methanol, medium boilers and high boilers; c) separating the stream (8) by distillation obtaining an MTBE-containing stream (10, 12) and a methanol-containing high-boiler stream (9, 11); d) recirculating an MTBE-containing stream (10, 12, 13) to step a) of the process, wherein the medium-boilers are completely or partially separated off from the medium-boiler-rich streams (10, 12) upstream of step d).
摘要翻译：本发明涉及一种方法，用于从含MTBE的混合物制备异丁烯，包括：a）分离的步骤在反应器R A（从含MTBE原料1a）和/或含MTBE的流（13，5 ）由异丁烯，甲醇，MTBE和副产物组成的反应产物流（6），这些产物来自a1）高沸点化合物，沸点范围高于55℃，压力为0.1MPa; a2）在0.1MPa的压力下沸程为12-55℃的中级锅炉; 和a3）在0.1MPa的压力下具有低于12℃的沸程的低沸点物; b）将所述物流（6）蒸馏分离成含有产物异丁烯和低沸物的物流（7）和含有MTBE，甲醇，介质锅炉和高沸点物流的物流（8）; c）蒸馏分离物流（8）以获得含有MTBE的物流（10,12）和含甲醇的高沸点物流（9,11）; d）回收在步骤a的方法的含MTBE的流（10，12，13）），其中，被执行（从中间沸点组分丰富的流10，12）到步骤d）之前的介质锅炉的完全或部分分离。

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