METHOD OF CRYSTALLINE WHITE SUGAR PRODUCTION Russian patent published in 2017 - IPC C13B30/02 

FIELD: chemistry.

SUBSTANCE: method envisages boiling out the fillmass of first crystallization in the first vacuum apparatus, selecting the fillmass portion and feeding it into the second vacuum apparatus, the finished fillmass output into the receptacle fillmass mixer and centrifugation in a filter centrifuge with the first runoff separation, washing the sugar crystals with the second runoff separation, and the crystalline white sugar discharge. Wherein powdered sugar is used as chrystallization centres. The powder is pre-fractionated by sieving to the crystals size of 0.10-0.15 mm. The chrystallization centres are initiated on its base at the rate of 10-12 pc. per 1 mm of the trial lens surface length. Then they are grown by maintaining in the fillmass of 88-90% DS. Then part of said fillmass in an amount of 35-45% from the total weight is sampled in the form of a mixture with syrup and melt liquer into the second apparatus as the crystal base, and then distilled soft monoglyceride, heated to the fillmass temperature, is administered into it at the ratio of 0.002-0.004% by the fillmass weight. In the first apparatus the fillmass is boiled out to 92.0-92.5% of dry substances content, and in the second - to 93.0-93.5% of dry substances content. The fillmass from the first vacuum apparatus is directed to centrifugation earlier than that from the second one. Washing sugar crystals is carried out first with a sugar containing solution with the concentration of 70-76% of dry substances content in an amount of 2.5-3.5% by weight of the fillmass, with adding 2-4 mg /l of ozone at the temperature of 80-90°C, and then the wash water, saturated with steam, is fed at the pressure of 0.3-0.4 MPa in the amount of 0.8-1.4% by weight of the fillmass.

EFFECT: improvement of output and quality of white sugar crystals.