Patent ID: 6838531
Filing Date: 2005-01-04
Classification: B01J,C08F

Abstract:
1. A process for slurry polymerization of olefins and for separating polymer solids from diluent, the process comprising: polymerizing in a reaction zone at least one olefin monomer in a liquid diluent to produce a fluid slurry comprising the liquid diluent and polymer solids; withdrawing a portion of the slurry from the reaction zone; heating the withdrawn portion of the slurry; passing the withdrawn portion of the slurry to an intermediate pressure zone in which a majority of the diluent is separated from the polymer solids, wherein the intermediate pressure zone is at a pressure in the range of from 100 psia to 1500 psia; withdrawing the polymer solids from the intermediate pressure zone; and transferring the polymer solids to a purge zone without passing through a flash zone.