Method for improving cooling of fluid bed polymer reactor

摘要

Disclosed herein is a fluid bed polymerization process including an improved method for cooling the fluid bed. The recycled fluid stream is cooled by a method comprising a) cooling said gas sufficiently to condense a portion of said gas to a liquid, b) thereafter separating said liquid from said cooled gas, c) compressing said cooled gas, d) thereafter recooling said cooled gas sufficiently to condense a portion thereof to a liquid, e) reintroducing said liquid portions and said recooled gas into said reactor sufficiently to maintain reactive conditions.