Process for the crystallization of sodium bicarbonate

Details Process for the crystallization of sodium bicarbonate Process for the crystallization of sodium bicarbonate

1990-04-24

1994-03-01

Langel, Wayne

Chemistry: physical processes

Physical processes

Crystallization

423422, 23313FB, C01D 724

Patent

active

052903222

ABSTRACT:
Process for the manufacture of sodium bicarbonate particles having an ovoid or spherical shape, the process preparing an aqueous solution of sodium bicarbonate, which is supersaturated; circulating the aqueous solution supersaturated in sodium bicarbonate through a bed of crystals in order to cause the bed to be a mobile bed in which the crystals are in continuous motion, and to cause crystallization of the sodium bicarbonate particles and at least partial desupersaturation of the aqueous solution supersaturated in sodium bicarbonate to provide a mother liquor and, withdrawing the sodium bicarbonate particles from the bed.

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Shreve "The Chemical Process Industries" 2nd edition; McGraw-Hill Book Co., Inc. p. 295, 1956.
G. Herdau "Small particle statistics" 2nd edition; 1960; Butterworths; pp. 10 and 11.

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