Method for polymerizing olefins in a fluid-bed reactor

摘要

PCT No. PCT/FI94/00304 Sec. 371 Date Jan. 4, 1996 Sec. 102(e) Date Jan. 4, 1996 PCT Filed Jul. 1, 1994 PCT Pub. No. WO95/01831 PCT Pub. Date Jan. 19, 1995A fluidized bed polymerization process in which a central mixing element sweeps the interior of the bed. The mixing element contains agitator arm which pass adjacent to the reactor walls and a have a perforated surface. Gas is directed to the central mixing shaft and distributed to the agitator arms.