Process for the crystallization of sodium bicarbonate
US5290322A · kind A · utility
11Cited by
6References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 24, 1990 |
| Grant date | Mar 1, 1994 |
| Priority date | — |
| Expiry date | Apr 24, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01D7/38
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.