TECHNOLOGY OF CONTINUOUS DISCHARGE AND PRESSURE REGULATION IN POLYMERISATION REACTORS Russian patent published in 2014 - IPC C08F2/00 C08F2/14 C08F10/00 C08F10/02 B01J19/24 

FIELD: chemistry.

SUBSTANCE: method includes the supply of diluents and the first monomer into the first polymerisation reactor, formation of the first polyolefin in the first suspension, continuous discharge of the transported suspension from the first polymerisation reactor into the second polymerisation reactor. After that, the polymerisation of the second monomer is performed in the second polymerisation reactor with the formation of the second polyolefin. By means of the first discharge device of a continuous action, located on the second polymerisation reactor, pressure regulation in the second polymerisation reactor is realised and the rate of the suspension flow, discharged from the first polymerisation reactor, is supported higher than 4 ft/sec (1.2 m/s).

EFFECT: prevention of the reactor clogging and support of the suspension in a stable state in transportation makes it possible to increase efficiency, reduce the time of the system standstill and increase the total amount of production.

20 cl, 6 dwg