METHOD FOR PRODUCTION OF SUGAR FOR LONG STORAGE Russian patent published in 2015 - IPC C13B30/00 

FIELD: food industry.

SUBSTANCE: method envisages syrup condensation in the vacuum apparatus till the supersaturation coefficient value is 1.25-1.27, crystals formation, crystals growing with constant or periodic intake of syrup till crystals content in the fillmass is 50-55%, the fillmass centrifugation and sugar drying and packing. When crystals content in the fillmass is 30-35%, one performs the fillmass intermediate output and centrifugation with separation of sugar crystals and inter-crystal solution. The produced crystals are mixed with syrup with purity equal to 97-99.4% and with dry substances content equal to 82-84% at a temperature of 80-82°C till the supersaturation coefficient value is 1.05-1.1. The produced fillmass is replaced into the vacuum apparatus for final growing of crystals at a temperature of 72-75°C. The replenishing solution during constant or periodic intake is represented by sugar syrup with purity equal to 97-99.4% and with dry substances content equal to 67-69%. Alternatively, the final growing of crystals is performed in the mixer-crystallisers by way of crystallisation by cooling with the temperature reduction to 45-48°C at a rate of 0.1-0.15°C/min. According to the preferable version, before packing produced sugar is subjected to conditioning in three steps.

EFFECT: production of sugar sand with long storage life and reduced hygroscopic property due to purity indices increase and production of crystals with more regular geometric shape.

2 cl, 4 dwg, 3 tbl, 3 ex