Method and apparatus for crystallization of solution containing salts
US4245998A · kind A · utility
9Cited by
8References
4Claims
0Family size
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Key dates
| Filing date | Mar 29, 1978 |
| Grant date | Jan 20, 1981 |
| Priority date | — |
| Expiry date | Mar 29, 1998 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D9/0059
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
To remove salts from a solution containing the salts, hot air is injected downwards into the solution in a concentrator, and the solution is concentrated by direct contact with the hot air, thereby enhancing an evaporation efficiency in the concentrator and preventing scale deposition in the concentrator and piping system. The solution is forcedly cooled in a crystallizer by direct contact with cool air, thereby making crystals grow in the solution within a short time. The solution and air are circulated in a closed cycle, thereby preventing a secondary environmental pollution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.