Process for solar concentration of lithium chloride brine
US4243392A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 11, 1979 |
| Grant date | Jan 6, 1981 |
| Priority date | — |
| Expiry date | Apr 11, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/133
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
By evaporation employing solar energy, a brine having a lithium chloride concentration greater than that of a brine whose vapor pressure under ambient conditions is substantially equal to the partial pressure of moisture in the atmosphere above the brine is obtained. The process by which such result is accomplished involves the use of a pond system consisting of a series of shallow ponds of relatively large surface area to which a dilute lithium chloride brine is introduced. The flow of the brine through the pond system is controlled so that, at a point intermediate the points of introduction of the brine to and withdrawal of the brine from the pond system, the concentration of the brine is such that its vapor pressure under ambient conditions is substantially equal to the partial pressure of the moisture in the atmosphere immediately above the pond system. This more concentrated brine is then caused to flow through the remainder of the pond system at a rate such that the temperature thereof, as a result of exposure to solar energy, exceeds that of the atmosphere above the pond system whereby additional water is evaporated from the brine to further increase the lithium chloride con…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.