METHOD FOR REDUCING POLYMER DEPOSITS ON SURFACES OF REACTOR EQUIPMENT IN THE PROCESS OF OLIGOMERIZATION OF OLEFINS Russian patent published in 2023 - IPC C23C20/02 C08F2/01 C08F110/00 

FIELD: reactor equipment.

SUBSTANCE: present invention relates to a method for reducing polymer deposits on the internal surfaces of reactor equipment, where the polymer is a by-product of an olefin oligomerization process or is a polymer formed during the polymerization or copolymerization of olefins. The method for reducing polymer deposits on the surfaces of reactor equipment during the oligomerization or (co)polymerization of olefins includes the preliminary application of a zinc-containing coating on the internal surfaces of the reactor equipment that are in contact with the reaction medium, includes the following steps: preparation of a zinc reaction solution by mixing a zinc compound selected from zinc oxide, zinc hydroxide and/or alkylzinc, with a hydrocarbon solvent; introduction of the zinc reaction solution into the reactor equipment; stirring the zinc solution in the reactor equipment with a gradual increase in temperature from 25 to 150°C with speed from 20 to 100°C/h, followed by the formation of a zinc-containing coating on the surface of the reactor equipment. The invention also relates to a process for the oligomerization or (co)polymerization of olefins, which includes the interaction of raw materials containing α-olefin, under reaction conditions and in the presence of a catalytic system, in reactor equipment, on the inner surfaces of which a zinc-containing coating is applied.

EFFECT: method for reducing polymer deposits on the internal surfaces of reactor equipment by applying a zinc-containing coating makes it possible to reduce polymer deposits on the surfaces of reactor equipment without the need to stop the process.

33 cl, 2 dwg