FIELD: process engineering.
SUBSTANCE: method of olefins polymerisation comprises feed of olefin and polymerisation catalyst into polymerisation reactor to produce polyolefin. Said reactor comprises fluidised bed region with top and bottom zones and mobile bed region. Note here that mobile bed region one end communicates with fluidised bed region top part. Note also that mobile bed region opposite end communicates with fluidised bed region bottom part. Fluidised bed region diameter exceeds that of mobile bed region. Besides, method comprises circulation of, at least, fraction of olefin, catalyst and polyolefin through fluidised bed region and mobile bed region. Also, it comprises sustaining fluidised bed in sold-phase state in fluidised bed region and removal of polyolefin from the latter.
EFFECT: ruled out formation of polymer layers and surface shells.
13 cl, 3 tbl, 4 dwg
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