Apparatus and process for the withdrawal of polymer from a...

Details Apparatus and process for the withdrawal of polymer from a... Apparatus and process for the withdrawal of polymer from a...

2006-01-06

2010-10-05

Griffin, Walter D (Department: 1797)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C526S065000, C526S067000, C422S131000, C422S135000, C422S139000, C422S141000, C422S142000, C422S143000, C422S144000, C422S145000, C422S146000, C422S147000

Reexamination Certificate

active

07807761

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.

REFERENCES:
patent: 2651565 (1953-09-01), Bergman
patent: 4877587 (1989-10-01), Rhee et al.
patent: 5041473 (1991-08-01), Gau et al.
patent: 5545378 (1996-08-01), Morterol et al.
patent: 5798309 (1998-08-01), Breuers et al.
patent: 5929180 (1999-07-01), Chinh
patent: 6056927 (2000-05-01), Chinh et al.
patent: 6255411 (2001-07-01), Hartley et al.
patent: 6498220 (2002-12-01), Hartley et al.
patent: 2002/0198335 (2002-12-01), Bernier et al.
patent: 2004/0213706 (2004-10-01), Kivela et al.
patent: 2005/0152816 (2005-07-01), Kivela et al.
patent: 0 728 771 (1996-08-01), None
patent: 0 728 772 (1996-08-01), None
patent: 0 830 892 (1998-03-01), None
patent: WO 00/29452 (2000-05-01), None
patent: WO 03/011920 (2003-02-01), None

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