METHOD OF DIFFUSION SAP REFINING Russian patent published in 1998 - IPC

FIELD: sugar industry. SUBSTANCE: method involves progressive predefecation, addition of polyacrylamide at amount 0.009-0.011% of sap mass at pH 9.5-10.0 and predefecated sap settling. The obtained cleared sap is fed to basic defecation, I-st saturation, filtration and II-d saturation. The separated defecated precipitate is mixed with recirculated suspension precipitate after the I-st saturation, 0.1-0.3% CaO is added to mixture and saturated to pH 10.0-10.2 followed by filtration. The obtained filtrate is fed to the basic defecation and precipitate is removed from process. EFFECT: improved technology of process. 1 tbl