Patent ID: 6218484
Filing Date: 2001-04-17
Classification: B01J,C08F,Y10S

Abstract:
A continuous process for the polymerization of a polymerizable olefin monomer or a mixture of two or more olefinic monomers which comprises passing a gaseous stream comprised of an olefin monomer or a mixture of olefinic monomers through a fluidized bed in a reactor in the presence of a polymerization catalyst under reactive conditions, to polymerize at least a portion of said olefin monomer or said mixture of olefinic monomers, which comprises:A. withdrawing a gaseous stream from said reactor which is comprised of at least some unreacted olefin monomer or at least some of said mixture of olefinic monomers,B. cooling at least a part of said gaseous stream withdrawn from said reactor to a temperature at or below that at which liquid condenses out of said stream,C. separating at least part of the condensed liquid from the cooled gaseous stream,D. continuously introducing at least a portion of said cooled gaseous stream into the said reactor,E. bringing at least a part of said condensed liquid into indirect heat exchange relationship with said fluidized bed, thereby to produce a heated fluid.