FLUIDIZED BED POLYMERIZATION REACTOR WITH MULTIPLE FLUIDIZATION GRIDS

摘要

The invention teaches a novel design for a fluidized bed polymerization reactor (1) which utilizes a primary fluidization grid (2) to provide mixing and fluidization of the polymer and at least one secondary distribution plate (3) located above the first distribution plate (2) to promote segregation of polymer particles by size, the larger particles falling into the lower fluidization zone (2a) and the smaller particles being entrained up from the primary fluidization grid (2) and through the secondary distribution grid (3) into an upper reaction zone (3a).