APPARATUS FOR BLEACHING PARTICLES OF HIGH-CONSISTENCY CELLULOSE PULP AND METHOD OF OZONE-MEDIATED BLEACHING OF HIGH-CONSISTENCY CELLULOSE PULP Russian patent published in 1998 - IPC

FIELD: pulp-and-paper industry. SUBSTANCE: method consists in introducing particles of high-consistency cellulose pulp and ozone- containing gas into reaction zone, scattering pulp particles essentially throughout all reaction zone, while simultaneously displacing pulp particles throughout reaction zone in piston-flow mode to ensure smooth reaction between pulp particles and ozone due to ensuring contact of all pulp particles with ozone-containing gas. Pulp scattering index is lower than or equal to 7 at all particlesТ rotation velocities below 125 rpm. EFFECT: enhanced process efficiency. 26 cl, 29 dwg, 13 tbl