POLYOLEFINS PRODUCTION IN MULTI-REACTOR POLYMERIZATION SYSTEM Russian patent published in 2018 - IPC B01J19/24 C08F2/01 

FIELD: chemistry.

SUBSTANCE: system comprises the first reactor configured to obtain a product leaving the first reactor and containing a first polyolefin, the second reactor configured to obtain a product leaving the second reactor and containing the second polyolefin, a post-reactor treatment zone configured to receive products, leaving the first and second reactors. The first and second reactors are arranged to allow the product leaving the first reactor to be transferred to the second reactor and, alternatively, bypassing the second reactor and feeding to the post-reactor treatment zone. The first and second polyolefins are contacted for the first time in the post-reactor treatment zone. At that, the post-reactor treatment zone contains a blowing-off column. The first and second polyolefins directed thereto come in contact for the first time there, a tank, a feeding extruder. The first and second polyolefins directed thereto come in contact for the first time in the tank, and an extruder. The first and second polyolefins directed thereto are first contacted at the extruder inlet and mixed in the extruder.

EFFECT: invention provides an effective production of polyolefins, improving product quality, reducing the production costs.

11 cl, 25 dwg, 36 ex