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1. 发明申请

WO1997025355A1 POLYMERISATION PROCESS 审中-公开
标题翻译：聚合过程
公开(公告)号：WO1997025355A1
公开(公告)日：1997-07-17
申请号：PCT/GB1996003223
申请日：1996-12-23
申请人： BP CHEMICALS LIMITED , CHINH, Jean-Claude , HERITIER, Jacques , POWER, Michael, Bernard , TAPLEY, Stephen, Allen
发明人： BP CHEMICALS LIMITED
IPC分类号： C08F10/00
CPC分类号： C08F10/00 , C08F2/34
摘要： The present invention relates to a start-up process of a continuous gas fluidised bed process for the polymerisation of olefin monomer selected from (a) ethylene, (b) propylene, (c) mixtures of ethylene and propylene, and (d) one or more other alpha-olefins mixed with (a), (b) or (c), in a fluidised bed reactor by continuously recycling a gaseous stream comprising at least some of the ethylene and/or propylene through a fluidised bed in said reactor in the presence of a polymerisation catalyst under reactive conditions, cooling at least part of said gaseous stream withdrawn from said reactor to a temperature at which liquid condenses out, separating at least part of the condensed liquid from the gaseous stream, and introducing at least part of the separated liquid directly into the fluidised bed using a liquid injection means, characterised in that at least part of the gaseous recycle stream by-passes the hereabove cooling/condensing/separating steps, and is reintroduced as the recycling gaseous stream passing through the reactor.
摘要翻译：本发明涉及用于聚合选自（a）乙烯，（b）丙烯，（c）乙烯和丙烯的混合物）的烯烃单体的连续气体流化床方法的启动方法，和（d）一种或多种在流化床反应器中通过连续地将包含至少一些乙烯和/或丙烯的气流通过所述反应器中的流化床再循环在流化床反应器中的更多其它α-烯烃与（a），（b）或（c）在反应条件下存在聚合催化剂，将从所述反应器排出的至少部分所述气流冷却至液体冷凝出的温度，将至少部分冷凝液体与气流分离，并引入至少部分使用液体注入装置将分离的液体直接进入流化床，其特征在于，至少部分气态循环物流绕过上述冷却/冷凝/分离步骤，并作为回收物再次引入气流通过反应器。

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