- 专利标题: METHOD AND APPARATUS FOR POLYMERISING OLEFINS IN GAS PHASE
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申请号: EP15171820.2申请日: 2015-06-12
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公开(公告)号: EP3103818B1公开(公告)日: 2018-06-06
- 发明人: Kanellopoulos, Vasileios , Nyfors, Klaus , Aguayo Arellano, Pablo Ivan , Weickert, Gunter , Prinsen, Eric-Jan
- 申请人: Borealis AG
- 申请人地址: Wagramerstrasse 17-19 1220 Vienna AT
- 专利权人: Borealis AG
- 当前专利权人: Borealis AG
- 当前专利权人地址: Wagramerstrasse 17-19 1220 Vienna AT
- 代理机构: Kador & Partner
- 主分类号: C08F2/01
- IPC分类号: C08F2/01 ; B01J8/08 ; B01J8/18 ; B01J8/24 ; C08F2/34
摘要:
The present invention deals with an olefin polymerisation process. At least one olefin is polymerised in gas phase in a fluidised bed in the presence of an olefin polymerisation catalyst in a polymerisation reactor having a vertical body; a generally conical downwards tapering bottom zone; a generally cylindrical middle zone above and connected to said bottom zone; and a generally conical upwards tapering top zone above and connected to said middle zone. Fluidisation gas is introduced to the bottom zone of the reactor from where it passes upwards through the reactor, and withdrawn from the top zone of the reactor. The gas is then compressed, cooled and returned into the bottom zone of the reactor. A fluidised bed is thus formed within the reactor where the growing polymer particles are suspended in the upwards rising gas stream wherein the superficial velocity of the fluidisation gas is less than the transport velocity of the particles. There is no fluidisation grid in the reactor. The fluidisation gas is passed from an inlet chamber into the bottom zone and the gas flows from the upper part of the inlet chamber to the lower part thereof and the gas flows from the lower part of the inlet chamber to the bottom zone.
公开/授权文献
- EP3103818A1 METHOD AND APPARATUS FOR POLYMERISING OLEFINS IN GAS PHASE 公开/授权日:2016-12-14
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