Process for the crystallization of sodium bicarbonate
AssigneeSolvay & Cie (Societe Anonyme)
InventorsClaude Breton, Leon Ninane
Life of this patent
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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.
Claims8
Process for the manufacture of sodium bicarbonate particles having one of an ovoid shape and a spherical shape, the process comprising:
- a. preparing an aqueous solution of sodium bicarbonate, which is supersaturated;
- b. 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,
- c. withdrawing the sodium bicarbonate particles from the bed.
Dependencies are inferred from the claim text.