PERIODIC MEASUREMENT OF CATALYST AND AUXILIARY SUBSTANCE QUANTITY IN PROCESS IN GAS PHASE REACTOR WITH PSEUDOLIQUEFIED LAYER Russian patent published in 2009 - IPC C08F2/34 B01J8/24 B01J19/26 B05B7/14 

FIELD: chemistry.

SUBSTANCE: invention concerns method of dosing at least one solid catalyst out of particles and/or auxiliary substance of process in reactor (5) including pseudoliquefied layer (11) of particles in at least partially gaseous medium where process catalyst and/or auxiliary substance quantity is dosed at given time intervals in pseudoliquefied layer (11) at at least one dosing point (10) where in each case liquid medium flow is put in reactor (5) so as to form an area with decreased particle density in pseudoliquefied layer (11) around dosing point(s) (10). Then catalyst(s) and/or auxiliary substance(s) quantity is dosed in that area, with liquid medium flow put in periodically at interval of 0.5 to 60 seconds, and catalyst quantity is measured over 0.5 to 3 second delay after the start of liquid medium flow input. Also invention claims method of continuous polymerisation for obtaining ethylene and propylene homopolymers and copolymers, and device for method implementation.

EFFECT: possible penetration of catalyst from one dosing point deeper into pseudoliquefied layer due to decreased particle density, thus allowing prevention of high local catalyst concentration.

15 cl, 8 dwg, 4 ex