METHOD FOR SEPARATING COMPONENTS OF REACTION MIXTURE OBTAINED BY POLYMERIZATION OF ETHYLENE-UNSATURATED MONOMERS UNDER HIGH PRESSURE Russian patent published in 2017 - IPC C08F6/10 C08F2/01 C08F10/00 C08F10/02 

FIELD: technological processes.

SUBSTANCE: method includes feeding the reaction mixture to the separator, separating the reaction mixture into a gas fraction and a liquid fraction, extracting the gas fraction from the top of the separator, and extracting the liquid fraction from the bottom of the separator. Separating is carried out at a pressure of 15-50 MPa and a temperature of 120-300 °C. The separator is a vertical cylinder with a length-to-diameter ratio L/D equal to 4-10, and is equipped with an inlet pipeline for feeding the reaction mixture. The inlet pipeline passes into the separator from above and vertically. The ratio of the inner diameter of the inlet pipeline at its lower end and the inner diameter of the separator in its cylindrical part is 0.2-0.4. A method for obtaining ethylene homopolymers or copolymers from ethylene-unsaturated monomers in the presence of polymerization catalysts with free radicals at temperatures of 100-350 °C and a pressure of 110-500 MPa in the polymerization reactor.

EFFECT: high separation efficiency with low entrainment of the polymeric material, low fouling degree of the separator walls, manufacturability due to ensuring a relatively flat surface of the liquid fraction in the separator.

10 cl, 2 dwg