利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

3 条记录 (耗时 0.016 秒)

    Monomer recovery by returning column overhead liquid to the reactor
    2.
    发明授权
    Monomer recovery by returning column overhead liquid to the reactor 有权
    通过将塔顶液体返回到反应器来回收单体

    公开(公告)号：US07629421B2

    公开(公告)日：2009-12-08

    申请号：US11313328

    申请日：2005-12-21

    申请人： John H. Tait ,  Robert S. Murphy ,  Michael A. Watts ,  Anurag Gupta

    发明人： John H. Tait ,  Robert S. Murphy ,  Michael A. Watts ,  Anurag Gupta

    IPC分类号： C08F6/04 ,  B01D3/14 ,  B01D5/00

    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： 聚烯烃生产系统，包括聚合反应器（例如聚乙烯回路浆料反应器）和分馏系统，其接收在稀释剂/单体回收系统中处理以反应至反应器和供应商的反应器流出物。 导管将包含单体（例如乙烯）的一部分回流流从分馏系统中分离出来，从而为供应商提供较少的单体例如乙烯的排放。 因此，随着返回到反应器的单体将单体原料置换到反应器，单体产率有利地增加。 回流可来自设置在分馏子系统中的稀释剂再循环柱的冷凝塔顶灯。 稀释剂再循环柱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，并且可以接收作为回流的回流的非转移部分。