METHOD OF PURIFYING SOLID SUGAR-CONTAINING SOLUTION Russian patent published in 2017 - IPC C13B20/06 

FIELD: chemistry.

SUBSTANCE: method of purifying a solid sugar-containing solution is proposed, providing its defecation in a defecator, carbonation of defecated solution in the first co-currentcarbonator, feeding it into countercurrent carbonator, carrying off a partially carbonated solid sugar-containing solution from the countercurrent carbonator into the second co-currentcarbonator and recirculation of overcarbonated solution into countercurrent carbonator for mixing with the incoming solution from the first co-currentcarbonator, final carbonation of resulting mixture, followed by its filtration. A carbon dioxide activated precipitate II carbonation sludge is added to the resulting mixture before its final carbonation in an amount of 18-20% to the mixture mass, final carbonation is carried out to alkalinity values of 0.015-0.020% CaO by phenolphthalein indicator.

EFFECT: increased output of finished products and a colour reduction of the purified solid sugar-containing solution.

1 dwg, 1 tbl, 2 ex