摘要 |
THE INVENTION RELATES TO CONTINUOUS GAS FLUIDISED BED POLYMERISATION OF OLEFINS, ESPECIALLY ETHYLENE, PROPYLENE, OR MIXTURES OR MIXTURES OF THSE WITH OTHER ALPHA OLEFINS. WHEREIN THE MONOMER - CONTAINING RECYCLE GAS EMPLOYED TO FLUIDISE THE BED IS COOLED TO CONDENSE OUT AT LEAST SOME LIQUID HYDROCARBON LIQUID, WHICH CAN BE A MONOMER OR AN INERT LIQUID, IS SEPARATED FROM THE RECYCLE GAS AND IS FED DIRECTLY TO THE BED TO PRODUCE COOLING BY LATENT HEAT OF EVAPORATION. THE LIQUID FEEDING TO THE BED CAN BE THROUGH GAS - INDUCED ATOMISER NOZZLES (
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