FIELD: chemistry.
SUBSTANCE: invention can be used in chemical industry. The apparatus for polymerisation of olefins, particularly ethylene, has a gas-phase reactor with a fluidised layer, a gas recirculation line connected to the reactor for outlet and recirculation of the stream of recirculation gas; and a cyclone 3. The cyclone 3 has an upper section 3a, having an inlet opening 4 lying eccentrically relative the central axis, a middle section 3b, adjacent to the upper section 3a and a lower section 3c for outlet of solid particles released from the recirculation gas, which is adjacent to the middle section 3b. Inside the upper section 3a and part of the middle section 3b there is a vertical cylindrical pipe 5, which continues downwards and serves for outlet of the recirculation gas with low content of particles.
EFFECT: invention ensures good separation of finely dispersed particles from recirculation gas, while preventing accumulation of hot fine polymer particles.
10 cl, 2 dwg
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