Patent ID: 6476161
Filing Date: 2002-11-05
Classification: B01J,Y10S

Abstract:
A method of introducing polymer slurry obtained from a slurry reactor into a gas phase reactor containing a fluidized bed (C, D) with a first fluidized zone (C) on top of a second fluidized zone (D), said fluidized zones having different flow patterns, comprising the steps ofconducting the content of the slurry reactor (R1) directly to the fluidized bed reactor (R2) as a multi-phase stream comprising polymer and active catalyst together with reaction medium as a downward directed flow using at least one feed line (10; 11), which protrudes substantially downwards into the fluidized bed (C, D), or as an upward directed flow using at least one feed line (12), which protrudes substantially upwards from the bottom of the gas phase reactor into the fluidized bed (C, D), and feeding the stream below the fluid bed surface (L) of the first fluidized zone (C) of the gas phase reactor in order to increase the once-through conversion of the process.