| 摘要 |
FIELD: food industry.SUBSTANCE: invention relates to food industry. The method envisages fillmass boiling out and crystallisation in two vacuum apparatus, ready fillmasses output into the receptacle fillmass mixer, centrifugation in a filtering batch centrifuge with first runoff separation, sugar crystals washing with second runoff separation and crystalline white sugar discharge. The crystallisation centres are represented by seed fillmass containing 20-30% of crystals sized 0.120-0.160 mm. In the vacuum apparatus, sugar crystals are grown to a size of 0.180-0.220 mm. Then fillmass in an amount of 35-50% is drained into the second apparatus with simultaneous charge of a sulfurated mixture of syrup with melt of first and second crystallisation sugars containing 65-75% of dry substances into the apparatus. Sugar crystals growing in the first and the second vacuum apparatus is performed with systematic intakes of the sulfurated mixture of syrup with melt. In the first and the second apparatus fillmass is respectively condensed to 92.0-92.5% and 93.0-94.0% of dry substances content. Then fillmass is diluted with the first fillmass runoff from the first apparatus, first - prior to discharge, then - in the receptacle fillmass mixer (to 92.0-92.5% of dry substances content); fillmass from the first vacuum apparatus is supplied for centrifugation earlier than fillmass from the second vacuum apparatus, with sugar crystals washing performed during a period of time corresponding to that of the first runoff separation while scouring water flow rate is equal to 0.16-0.26% of the fillmass weight per second.EFFECT: invention ensures increased output of crystalline white sugar in the process of fillmass boiling-out and centrifugation and crystallisation.1 ex |
