Process for the treatment of an aqueous solution mainly containing nitric acid and hydrofluoric acid
US5603811A · kind A · utility
6Cited by
6References
5Claims
0Family size
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Key dates
| Filing date | Mar 18, 1994 |
| Grant date | Feb 18, 1997 |
| Priority date | — |
| Expiry date | Mar 18, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S159/19
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process for treating an aqueous solution mainly containing nitric acid and hydrofluoric acid. The process involves distilling to provide an aqueous solution concentrated in nitric acid and hydrofluoric acid for the separation thereof, then separating by distillation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.