GAS PHASE FLUIDIZED BED POLYOLEFIN POLYMERIZATION PROCESS USING GAS OR GAS-SOLIDS TANGENTIAL FLOW

摘要

An improved method for polymerizing one or more polyolefins inthe presence of a transition metal catalyst in at least one gas phasereactor having an expanded section, the improvement comprisinggenerating a tangential flow of gas or gas-solids in the expandedsection of the gas phase reactor to reduce fines entrainment into thegas cycle system and to reduce or remove solid particle build-up on oneor more interior surfaces of the expanded section of the reactor.