Transfer vessel between flash tank and purge column

Details Transfer vessel between flash tank and purge column Transfer vessel between flash tank and purge column

2005-02-08

2010-06-29

Boykin, Terressa M (Department: 1796)

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

Synthetic resins

Treating polymer containing material or treating a solid...

C034S259000, C034S368000, C034S403000, C034S500000, C422S132000, C422S255000, C502S113000, C502S117000, C502S120000, C528S498000, C528S500000

Reexamination Certificate

active

07745568

ABSTRACT:
A process is provided for recovering polymer solids from a polymerisation reactor effluent. The process comprises extracting the polymerisation effluent from a polymerisation reactor; passing the effluent, or a part thereof, to a flash vessel for flashing liquid in the effluent to vapour, and removing said vapour from said flash vessel; passing the polymer solids from the flash vessel to a transfer apparatus which comprises a transfer vessel; passing the polymer solids from the transfer vessel to a purging means for removing residual liquid from the polymer solids; wherein the polymer solids are passed from the flash vessel to the purging means in a continuous flow such that a quantity of polymer solids is maintained in the transfer vessel. An apparatus for performing the process is also provided.

REFERENCES:
patent: 3152872 (1964-10-01), Salmon et al.
patent: 6319997 (2001-11-01), Kendrick et al.
patent: 6566460 (2003-05-01), Salmon
patent: 2005/0272891 (2005-12-01), Fouarge et al.
patent: 2007/0032611 (2007-02-01), Vandaele
patent: 2007/0036693 (2007-02-01), Vandaele
patent: 2009/0143546 (2009-06-01), Fouarge et al.
patent: 0 415 427 (1991-03-01), None

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