METHOD OF PRODUCTION OF PEROXIDE SALTS IN FORM OF SOLID PARTICLES AND DEVICE FOR REALIZATION OF THIS METHOD Russian patent published in 2000 - IPC

FIELD: chemical industry; manufacture of detergents. SUBSTANCE: plant includes crystallizer 1 and classifier 2. Diameter of classifier 2 is lesser than that of crystallizer 1. Crystallizer 1 is divided into crystal forming and growing zones 3 and clarifying zone 3 by means of grate 5. Zone 3 is provided with impeller agitator 6 with hollow axle 8 and double coil 7. Classifier 2 is provided with agitator 13. Concentrated H₂O₂ solution is fed to lower portion of crystallizer 1 through hollow axle 8 agitator 8. Concentrated aqueous solution of alkali metal salt containing salting-out agent and stabilizer is also fed to lower portion of crystallizer 1. These solutions interact forming supersaturated solution of peroxide salt. Supersaturated solution is kept under controllable conditions for forming and growing crystals. Ascending flow of supersaturated solution and descending flow of solid particles of peroxide salt pass through crystal forming and growing zone 3. Excessive solution clarified in clarifying zone 4 is taken from its upper portion and is fed to classifier 2 where elutriation of particles takes place. EFFECT: enhanced economical efficiency of producing stable peroxide salts with narrow granulometric composition in continuous mode. 9 cl, 7 dwg, 2 tbl, 5 ex