Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
IMPROVED PUMPING APPARATUS AND PROCESS FOR SLURRY POLYMERIZATION IN LOOP REACTORS
Document Type and Number:
WIPO Patent Application WO2004027264
Kind Code:
A3
Abstract:
An olefin polymerization process and apparatus wherein a fluid slurry comprising monomer, diluent and catalyst is circulated in a continuous loop reactor by two or more pumps (100, 102). The process and apparatus allow operating the reaction at significantly higher solids content in the circulating fluid slurry. In a preferred embodiment, the fluid slurry is circulated by two impellers (22a, 22b) arranged so that the downstream impeller (22a) benefits from the rotational energy imparted by the upstream impeller (22b). An olefin polymerization process operating at higher reactor solids by virtue of more aggressive circulation has improved efficiencies, particularly in larger-volume reactors.

Inventors:
HOTTOVY JOHN D
ZELLERS DALE A
FRANKLIN ROBERT K
Application Number:
PCT/US2003/029048
Publication Date:
July 01, 2004
Filing Date:
September 16, 2003
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
CHEVRON PHILLIPS CHEMICAL CO (US)
International Classes:
B01J8/20; B01J8/22; B01J19/00; B01J19/18; C08F2/00; C08F2/01; C08F6/00; C08F10/00; C08G85/00; C08F110/06; C08F210/16; F04D; (IPC1-7): C08F2/00; C08F2/01
Foreign References:
US6319997B12001-11-20
US6281300B12001-08-28
US5597892A1997-01-28
US4424641A1984-01-10
US6239235B12001-05-29
US5565175A1996-10-15
Other References:
See also references of EP 1549680A4
Download PDF: