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1. 发明申请

WO2007075615A2 MONOMER RECOVERY BY RETURNING COLUMN OVERHEAD LIQUID TO THE REACTOR 审中-公开
标题翻译：通过将柱顶液返回到反应器来进行单体回收
公开(公告)号：WO2007075615A2
公开(公告)日：2007-07-05
申请号：PCT/US2006048323
申请日：2006-12-19
申请人： CHEVRON PHILLIPS CHEMICAL CO , TAIT JOHN H , MURPHY ROBERT S , WATTS MICHAEL A , GUPTA ANURAG
发明人： TAIT JOHN H , MURPHY ROBERT S , WATTS MICHAEL A , GUPTA ANURAG
IPC分类号： C08F6/00 , C08F10/00
CPC分类号： C08F6/003 , B01J19/1837 , B01J2208/00274 , B01J2208/00761 , B01J2219/00006 , Y10S526/92 , C08L23/00
摘要： A polyolefin production system, comprising a polymerization reactor (such as a polyethylene loop slurry reactor) and a fractionation system that receives reactor effluent processed in a diluent/monomer recovery system for recycle to the reactor and to suppliers. A conduit diverts a portion of a reflux flow comprising monomer, such as ethylene, from within the fractionation system to the polymerization reactor, providing for less venting of monomer, such as ethylene, to the supplier. Accordingly, monomer yield is advantageously increased, as the monomer returned to the reactor displaces monomer feedstock to the reactor. The reflux flow may originate from a condensed overhead lights from a diluent recycle column disposed in the fractionation subsystem. The diluent recycle column may receive a stream comprising diluent and monomer as feed from the diluent/monomer recovery subsystem, and may receive the non-diverted portion of the reflux flow as reflux.
摘要翻译：一种聚烯烃生产系统，其包括聚合反应器（例如聚乙烯回路淤浆反应器）和分馏系统，其接收在稀释剂/单体回收系统中处理的反应器流出物，用于再循环至反应器和供应商。导管将包含单体例如乙烯的回流的一部分从分馏系统内转移至聚合反应器，从而向供应商提供较少的单体例如乙烯的排放。因此，单体产率有利地增加，因为返回反应器的单体将单体原料置换到反应器中。回流可以源自设置在分馏子系统中的来自稀释剂再循环塔的冷凝顶灯。稀释剂再循环塔可以接收包含稀释剂和单体的物流作为来自稀释剂/单体回收子系统的进料，并且可以接收回流的非转向部分作为回流。

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