Apparatus and process for the withdrawal of polymer from a gas-phase polymerization reactor
US7807761B2 · kind B2 · utility
5Cited by
9References
8Claims
0Family size
Assignee
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Key dates
| Filing date | Jan 6, 2006 |
| Grant date | Oct 5, 2010 |
| Priority date | — |
| Expiry date | Apr 6, 2027 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F210/06
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Process and apparatus for gas-phase polymerization of olefin(s), including a fluid or stirred bed reactor, a bed level controller, and at least one conduit for withdrawing polymer, provided with an isolation valve. The conduit connects the side wall of the reactor to at least one uplift conduit, at least one recovery gas lock hopper equipped with a discharge valve, and at least one degassing chamber. At least one flushing device is provided for flushing the at least one uplift conduit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.