发明名称 |
PROCESS FOR FEEDING A CATALYST IN A POLYMERIZATION REACTOR |
摘要 |
A process for introducing a catalyst powder based on a titanium compound supported on magnesium halide into a gas-phase olefin polymerization reactor, characterized in that it comprises: (a) storing the catalyst powder under an atmosphere of a liquid C3-C12 alkane; (b) withdrawing from step (a) a measured amount of said catalyst powder by means of a rotary valve; (c) transferring said metered amount of catalyst powder to a catalyst activation section by a continuous pick-up flow of a liquid C3-C12 alkane; (d) contacting the catalyst powder with a liquid phase comprising an organo-aluminum compound and optionally an external donor compound, at a temperature ranging from -20° C. to 60° C.; (e) introducing the activated catalyst powder in one or more gas-phase olefin polymerization reactors, where a gaseous mixture comprising at least one alpha-olefin is subjected to polymerization. |
申请公布号 |
KR20110100310(A) |
申请公布日期 |
2011.09.09 |
申请号 |
KR20117017775 |
申请日期 |
2009.12.23 |
申请人 |
BASELL POLIOLEFINE ITALIA S.R.L. |
发明人 |
BAITA PIETRO;KARER RAINER;MEIER GERHARDUS;FUNK GUIDO;MEI GABRIELE |
分类号 |
B01J8/00;B01J8/24;C08F2/01;C08F10/00 |
主分类号 |
B01J8/00 |
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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