发明名称 |
Slurry phase polymerisation process |
摘要 |
Polymerisation process in which polyethylene is produced in slurry in a polymerisation reactor in the presence of a Ziegler Natta catalyst and an activator, and a stream or slurry containing the polymer is withdrawn from the reactor and transferred to a flash tank operating at a pressure and temperature such that at least 50 mol % of the liquid or non-polymer component of the stream entering the flash tank or slurry is withdrawn from the flash tank as a vapour and at least 98 mol % of the vapour withdrawn from the flash tank is capable of being condensed at a temperature of between 15 and 50° C., without compression. A by-product suppressor, which reduces the amount of by-product formed per unit of polyethylene produced by at least 10%, compared with an identical polymerisation process where the by-product suppressor is not present, is used in the reactor. The molar ratio of the by-product suppressor added to the reactor to titanium added to the reactor is between 0.2 and 1. |
申请公布号 |
US8183333(B2) |
申请公布日期 |
2012.05.22 |
申请号 |
US20080733378 |
申请日期 |
2008.08.29 |
申请人 |
KOCH BENOIT;MARISSAL DANIEL;PARISEL MARC;WALWORTH BRENT R;FREDERICH ANDRE;INEOS MANUFACTURING BELGIUM NV |
发明人 |
KOCH BENOIT;MARISSAL DANIEL;PARISEL MARC;WALWORTH BRENT R;FREDERICH ANDRE |
分类号 |
C08F2/00;C08F4/00;C08F110/02 |
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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