公开(公告)号：US06884915B2

公开(公告)日：2005-04-26

申请号：US10124318

申请日：2002-04-18

申请人： Shuji Obayashi ,  Takahito Nishiyama

发明人： Shuji Obayashi ,  Takahito Nishiyama

IPC分类号： C07C5/333 ,  C07C15/46 ,  C07C2/64

CPC分类号： C07C15/46 ,  C07C5/333

摘要： The present invention is a process for producing styrene by dehydrogenation of ethylbenzene, which contains the steps of (i) feeding a raw material gas containing ethylbenzene and steam to a first dehydrogenating step to produce a reacted gas containing ethylbenzene, styrene and hydrogen in the presence of a dehydrogenation catalyst, (ii) feeding the reacted gas obtained in the first dehydrogenating step to an oxidizing step to combust at least part of hydrogen in the presence of an oxidation catalyst, and (iii) feeding the reacted gas obtained in the oxidizing step to a second dehydrogenating step to produce styrene from ethylbenzene in the presence of the dehydrogenation catalyst, with maintaining the carbon dioxide-generating ratio in the second dehydrogenating step at a level less than 2.1 times that at the initial stage of the reaction.

摘要翻译： 本发明是一种通过乙苯脱氢生产苯乙烯的方法，其包括以下步骤：（i）将含有乙苯和蒸汽的原料气体进料至第一脱氢步骤，以在存在下产生含有乙苯，苯乙烯和氢的反应气体 的脱氢催化剂，（ii）将在第一脱氢步骤中获得的反应气体进料到氧化步骤，以在氧化催化剂存在下使至少部分氢燃烧，和（iii）将在氧化步骤中获得的反应气体进料 在脱氢催化剂存在下从乙苯生产苯乙烯的第二脱氢步骤，将第二脱氢步骤中的二氧化碳产生比维持在反应初始阶段的二氧化碳发生比的水平。