FIELD: chemistry.
SUBSTANCE: method of treating fluidised-bed gas-phase reactor and method of polymerising olefins in the fluidised-bed gas-phase catalyst in the presence of a catalyst which enables formation of films, realised by feeding a chromium-containing compound into the reactor and forming a high-molecular weight polymer coating on the reactor walls. The invention also relates to an apparatus and a method of feeding the chromium-containing compound into the fluidised-bed gas-phase reactor at several points near the bottom part of the section of the wall in the region of the fluidised bed of the fluidised-bed reactor, and formation of a high-molecular weight polymer coating on the section of the wall in the region of the fluidised bed.
EFFECT: according to the invention, chromium is deposited on wall sections in the region of the fluidised bed and not at the bottom or other equipment of the gas-phase system, which prevents formation of films in the polymerisation method.
25 cl, 6 tbl, 3 dwg, 1 ex
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