METHOD FOR CONTROLLING THE POLYMER FLOW IN A POLYMERIZATION PROCESS

摘要

A method for controlling the flowability of polymer particles flowing downward in a densified form inside a polymerization reactor, in which one or more monomers are gas­phase polymerized in the presence of a polymerization catalyst, the density of solid (Kg of polymer per m<3> of reactor occupied by the polymer) being higher than 80% of the "poured bulk density" of the polymer, the method being characterized in that a liquid stream is continuously fed into the polymerization reactor at a mass flow rate per unity of reactor surface higher than 30 Kg/h m<2>.