发明名称 |
Method and device for optimising catalyst supply to a polymerisation reactor |
摘要 |
Methods for supplying a catalyst to an ethylene slurry loop polymerization reactor and polymers formed therefrom are described herein. The method generally includes preparing a catalyst slurry in a preparation vessel wherein the slurry includes a hydrocarbon diluent liquid which contains a Ziegler-Natta catalyst; supplying the catalyst slurry from the preparation vessel to a buffer vessel; withdrawing the catalyst slurry from the buffer vessel and supplying the catalyst slurry to a slurry loop polymerization reactor in which ethylene is polymerized; mixing a co-catalyst with the Ziegler Natta catalyst in the slurry prior to the supplying of the catalyst slurry to the slurry loop polymerization reactor; and controlling the transfer of catalyst slurry from the preparation vessel to the buffer vessel and the withdrawal of catalyst slurry from the buffer vessel to maintain the level of catalyst slurry in the buffer vessel substantially constant relative to the level of catalyst slurry in the preparation vessel. |
申请公布号 |
US8258245(B2) |
申请公布日期 |
2012.09.04 |
申请号 |
US20100778401 |
申请日期 |
2010.05.12 |
申请人 |
FOUARGE LOUIS;TOTAL PETROCHEMICALS RESEARCH FELUY |
发明人 |
FOUARGE LOUIS |
分类号 |
C08F4/00;B01J8/00;B01J8/20;B01J19/00;B01J19/18;B01J19/24;C08F4/12;C08F10/00 |
主分类号 |
C08F4/00 |
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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