abstract |
IN A FLUID BED REACTOR FOR THE GAS-PHASE POLYMERIZATION OF OLEFINS, THE INCOMING GAS STREAM IS SEPARATED INTO PARTIAL STREAM BY BEING PASSED THROUGH A PLURALITY OF PARALLEL CONICALLY SHAPED DIFFUSER TUBES. AN AGITATED SUSPENSION OF CATALYST IS FORMED IN EACH TUBE. A SHELL COMMON TO THE TUBES HOLDS A LOW BOILING COOLANT. |