CIRCULATION REACTOR POLYMERISATION Russian patent published in 2012 - IPC B01J19/24 C08F2/14 C08F10/00 

FIELD: process engineering.

SUBSTANCE: invention may be used in chemical industry. Proposed method comprises polymerisation of olefin polymer (not obligatorily, together with olefin commoner) in at least one tubular continuous-operation circulation reactor incorporated with multi-reactor system, in the presence of polymerisation catalyst in diluting agent. Suspension including solid particles of olefin polymer and diluting agent are produced. Mean ID of tubular reactor, on at least 50% of its length, makes at least 700 mm. Total pressure drop in reactor circuit makes less than 1.3 bar. High-molecular weight polymer is produced in first reactor while low-molecular weight polymer is obtained in second reactor. First reactor features cubic capacity exceeding 100 kg/m³/h polymer. Ratio of first reactor cubic capacity to that of second reactor exceeds 1. Polymer output exceeds 25 t/h.

EFFECT: reduced specific consumption of electric power.

17 cl, 3 dwg, 1 ex