发明名称 |
POLYMERIZATION PROCESS |
摘要 |
Process for the gas-phase catalytic polymerization of olefins carried out in a plurality of interconnected polymerization zones, the process comprising feeding one or more monomers to said polymerization zones in the presence of a catalyst under reaction conditions and collecting the polymer product from said polymerization zones, in which process the polymer particles grow within a first polymerization zone where a fluidized bed is formed, at least a part of said polymer particles leave said first polymerization zone to enter a second polymerization zone through which they flow downward, leave said second polymerization zone and enter a third polymerization zone through which they flow upward under fast fluidization or transport conditions, leave said third polymerization zone and are reintroduced into the first polymerization zone, thus establishing a circulation of polymer between the different polymerization zones. |
申请公布号 |
EP1549687(A1) |
申请公布日期 |
2005.07.06 |
申请号 |
EP20030753465 |
申请日期 |
2003.09.25 |
申请人 |
BASELL POLIOLEFINE ITALIA S.P.A. |
发明人 |
COVEZZI, MASSIMO;MEIER, GERHARDUS;MEI, GABRIELE |
分类号 |
B01J8/18;B01J8/24;B01J8/26;B01J8/38;B01J19/24;C08F2/00;C08F2/34;C08F10/00;C08F110/02;C08F110/06;C08F210/06;C08F210/16;C08F210/18 |
主分类号 |
B01J8/18 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|