Method for recovery of hydrogen chloride from dilute solutions
US4036939A · kind A · utility
18Cited by
8References
11Claims
0Family size
Assignee
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Key dates
| Filing date | Apr 24, 1974 |
| Grant date | Jul 19, 1977 |
| Priority date | — |
| Expiry date | Apr 24, 1994 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01B7/01
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The method of recovery of hydrogen chloride in gaseous form from an organic solvent loaded with hydrochloric acid in a dilute aqueous solution consists in carrying out prior to distillation a dehydration of the loaded organic solvent in a dehydration extractor in which the solvent is circulated countercurrent to an aqueous solution having a high chloride concentration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.