PROCESS FOR FEEDING LIQUID COMONOMER TO A POLYMERIZATION CONDUCTED IN A FLUIDIZED BED REACTOR

摘要

PURPOSE: A method for feeding one or more kinds of monomers in liquid state is provided to prevent the formation of this chunking phenomenon and to operate the polymerization in a continuous manner over longer periods of time. CONSTITUTION: The process for a gas phase polymerization of a polymer using at least one liquid olefinic monomer in the presence of a catalyst, under polymerization conditions, and, optionally, in the presence of an inert particulate material, comprises adding one or more liquid olefinic monomers directly to a fluidized reactor at one or more points located between 5% and 90% of the fluidized bed height above a distributor plate positioned at or near the bottom of the reactor by means of at least one nozzle or tube positioned to protrude into the fluidized bed at least 2 inches and at least 20% of the radius of the reactor.