METHOD FOR AUTOMATIC CONTROL OF SUGAR LIQUORING PROCESS AND SYSTEM FOR AUTOMATIC CONTROL OF REALIZATION OF THIS METHOD Russian patent published in 2005 - IPC

FIELD: sugar industry.

SUBSTANCE: method for automatic controlling of sugar liquoring process in horizontal sectional liquoring continuous-action mixer and accumulating mixer includes changing flow of liquoring solution with consideration of liquoring concentration in accumulating mixer. Into sections, where concentration of dry substances does not exceed 18%, lime milk is fed, flow of which is adjusted so, that pH of liquoring in this sections was 10,8-11,2, and stop of sugar feeding into liquoring mixer is performed when liquoring level in accumulating mixer reaches certain level. System for automatic control of sugar liquoring process in horizontal sectional liquoring continuous-action mixer and accumulating mixer includes level sensor in accumulating mixer, mounted in said mixer, liquoring concentration sensor and liquoring solution feeding adjuster into first section of liquoring mixer. Each section of liquoring mixer, except last one, is provided with branch pipe for feeding lime milk, pH indicator and dry substances concentration indicator. Also, system is provided with serially connected valve for stopping sugar feed into liquoring mixer and adjuster, input of which is connected to level indicator, mounted in accumulating mixer, while the latter is connected to liquoring solution feeding adjuster into first section via set-point device, connected to concentration sensor. Use of device allows to increase efficiency of sugar purification due to forming of favorable conditions for decomposition of reducing substances during liquoring. Containment level of reducing substances in sugar liquoring is decreased in 1,4-1,4 times.

EFFECT: higher precision, higher efficiency.

2 cl, 1 dwg, 1 tbl