发明名称 |
Process for post reactor purging of residual monomers from solid polymer resins |
摘要 |
A process for removing unpolymerized monomers from a solid olefin polymer containing the monomers by countercurrently feeding an inert purge gas through a bed of polymer in a cylindrical purge vessel having tapered walls wherein the vessel has a height to bottom diameter ratio of 0.5:1 to 10:1 and the walls have a tapered angle based on a vertical axis of 0.5 to 15 degrees. An apparatus for removing unpolymerized monomers from a solid olefin polymer containing the monomers which comprises, a cylindrical purge vessel having tapered walls wherein the vessel has a height to bottom diameter ratio of 0.5:1 to 10:1 and the walls have a tapered angle based on a vertical axis of 0.5 to 15 degrees; a solids inlet disposed in an upper portion of the vessel; a solids discharge disposed in a lower portion of the vessel; gas entry means disposed within or below a bed of solids, and gas discharge means disposed in the upper portion of the vessel.
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申请公布号 |
US5478922(A) |
申请公布日期 |
1995.12.26 |
申请号 |
US19940272099 |
申请日期 |
1994.07.08 |
申请人 |
UNION CARBIDE CHEMICALS & PLASTICS TECHNOLOGY CORPORATION |
发明人 |
RHEE, AARON S.;WANG, DUAN-FAN |
分类号 |
B01J8/18;C08F6/00;(IPC1-7):C08F6/28 |
主分类号 |
B01J8/18 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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