PROCESS FOR SUPPLYING CATALYST TO A POLYMERIZATION REACTOR

摘要

The present invention relates to a method for feeding metallocene catalyst slurry to an olefin polymerization loop reactor (1) using a positive displacement device (5) comprising a first chamber (5-6) and a second chamber (5-3) each chamber having an outlet and each chamber comprising a ball arranged between the walls of said chamber, wherein said chambers are connected to each other by a pump chamber (5-2) operably connected to a pump, wherein the difference between the diameter of said ball and the diameter of said chamber is comprised between 5 to 200 times the average particle size (d50) of said catalyst.