公开(公告)号：US20160263543A1

公开(公告)日：2016-09-15

申请号：US14642204

申请日：2015-03-09

Applicant: FINA TECHNOLOGY, INC.

Inventor： Joseph E. PELATI

IPC: B01J8/04

CPC classification number: B01J8/0496 ,  B01J8/0221 ,  B01J8/0278 ,  B01J8/0285 ,  B01J8/0492 ,  B01J8/062 ,  B01J2208/00371 ,  B01J2208/00504 ,  B01J2208/00637 ,  B01J2208/00681 ,  C07C5/327 ,  C07C15/46

Abstract: A process may include shutting down a reactor in which ethylbenzene is undergoing dehydrogenation to styrene in the presence of steam and a catalyst adapted to catalyze dehydrogenation of ethylbenzene to styrene. Shutting down the reactor may include reducing a temperature of the reactor. Shutting down the reactor may include supplying a purge stream to the reactor. Supplying a purge stream may include increasing a steam-to-ethylbenzene molar ratio of an input stream to the reactor. Supplying a purge stream may include supplying steam and one or more of H2, CO2, and styrene to the reactor. The process may include stopping supply of the purge stream to the reactor and supplying an inert gas purge stream to the reactor. Shutting down the reactor may be performed without use of a steam-only purge stream.

Abstract translation: 一种方法可以包括在蒸汽和适于催化乙苯脱氢成苯乙烯的催化剂存在下，关闭其中乙苯正在脱氢的苯乙烯的反应器。 关闭反应器可能包括降低反应器的温度。 关闭反应器可以包括向反应器供应吹扫流。 提供吹扫流可以包括增加输入流与反应器的蒸汽 - 乙苯摩尔比。 提供吹扫流可以包括向反应器供应蒸汽和一种或多种H 2，CO 2和苯乙烯。 该方法可以包括停止向反应器供应吹扫流，并将惰性气体吹扫流供应到反应器。 可以在不使用仅蒸汽净化流的情况下执行关闭反应器。