Process for continuous crystallization of alpha monohydrate dext

Details Process for continuous crystallization of alpha monohydrate dext Process for continuous crystallization of alpha monohydrate dext

1980-12-17

1982-11-02

Marcus, Michael S.

Sugar, starch, and carbohydrates

Processes

Carbohydrate manufacture and refining

127 30, C13F 102

Patent

active

043571727

ABSTRACT:
A process for continuously crystallizing alpha monohydrate dextrose from dextrose-containing liquours. The process is operated isothermally and produces a lean phase massecuite. According to the process, a rate of agitation is employed, within a reaction zone operated in a continuous mode, which permits linear growth of crystals to occur at a growth rate which is surface reaction controlled. The process may be combined with a batch process by feeding lean phase massecuite from the process into a second reaction zone operated in a batch mode. This is done at a constantly declining temperature and produces a rich phase massecuite. The batch process stage is also continuously agitated, but at a slower rate than the first stage continuous process to prevent excessive attrition of existing crystals while maximizing crystal yield.

REFERENCES:
patent: 1521830 (1925-01-01), Newkirk
patent: 3257665 (1966-06-01), Idaszak
patent: 3607392 (1971-09-01), Lauer et al.

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