发明名称 |
PROCESS AND APPARATUS FOR REDUCING TAKE-OFF VALVE PLUGGING IN A POLYMERIZATION PROCESS |
摘要 |
<p>A slurry polymerization process removes a portion of the fluid slurry without using a settling leg or a continuous take-off. The process uses a reactor take-off valve that is periodically fully closed and fully opened such that the withdrawn slurry is removed from the reactor in a discontinuous manner. The regular, periodic full closing and full opening of the take-off valve reduces instances of polymer plugging the take-off valve. In another aspect of the invention, a take-off valve is throttled in a repetitive pattern to reduce plugging of the take-off valve.</p> |
申请公布号 |
WO2004024781(A1) |
申请公布日期 |
2004.03.25 |
申请号 |
WO2003US28659 |
申请日期 |
2003.09.12 |
申请人 |
CHEVRON PHILLIPS CHEMICAL COMPANY LP |
发明人 |
HOTTOVY, JOHN, D.;ZELLERS, DALE, A.;HAGENSON, RANDY, L. |
分类号 |
C08F2/00;C08F2/14;C08F10/02;C08F110/02;(IPC1-7):C08F2/14 |
主分类号 |
C08F2/00 |
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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