发明名称 |
Methods for Operating a Polymerization Reactor |
摘要 |
Methods for shutting down and restarting polymerization in a gas phase polymerization reactor are provided. The method can include introducing a polymerization neutralizer to the reactor in an amount sufficient to stop polymerization therein. The method can also include stopping recovery of a polymer product from the reactor and stopping introduction of a catalyst feed and a reactor feed to the reactor. The method can also include adjusting a pressure within the reactor from an operating pressure to an idling pressure. The method can also include adjusting a superficial velocity of a cycle fluid through the reactor from an operating superficial velocity to an idling superficial velocity. The method can also include maintaining the reactor in an idled state for a period of time.
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申请公布号 |
US2012329962(A1) |
申请公布日期 |
2012.12.27 |
申请号 |
US201113575872 |
申请日期 |
2011.02.17 |
申请人 |
MARKEL ERIC J.;HAGERTY ROBERT O.;PANNELL RICHARD B.;SIELOFF MICHAEL E.;HOLVECK JEROME;UNIVATION TECHNOLOGIES, LLC |
发明人 |
MARKEL ERIC J.;HAGERTY ROBERT O.;PANNELL RICHARD B.;SIELOFF MICHAEL E.;HOLVECK JEROME |
分类号 |
C08F2/38 |
主分类号 |
C08F2/38 |
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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