Process for causticizing of an aqueous solution containing alkali carbonate
US4894217A · kind A · utility
7Cited by
6References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 13, 1987 |
| Grant date | Jan 16, 1990 |
| Priority date | — |
| Expiry date | Oct 13, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S423/03
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Process for causticizing a water solution containing alkali carbonate with calcium oxide and hydroxide by bringing the water solution containing alkali carbonate into contact with the calcium oxide or hydroxide and by separating the alkali hydroxide solution arisen in the causticizing from the calcium carbonate precipitate. The water solution containing alkali carbonate is conducted through a bed which has been formed by mixing calcium oxide and calcium carbonate in the causticized alkali solution and by removing the excess alkali solution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.