Boundary layer carbonation of trona
US9056780B2 · kind B2 · utility
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11Claims
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Key dates
| Filing date | Jul 10, 2014 |
| Grant date | Jun 16, 2015 |
| Priority date | — |
| Expiry date | Jul 10, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2982
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A boundary layer carbonation process for producing sodium bicarbonate crystals having specific surface area in the range 0.4 m2/g to 2.5 m2/g from Trona, wherein in one embodiment the process comprises the steps of: providingTrona particles having a particle size range of −4+120 mesh; pre-wetting the Trona particles with water to provide a plurality of pre-wetted Trona particles each having a liquid water solution boundary layer deposited thereon; and carbonating the pre-wetted Trona particles across the water boundary layer to provide a product comprising sodium bicarbonate crystals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.