Method of recycling hydrochloric and hydrofluoric acid effluent
US9783427B2 · kind B2 · utility
0Cited by
5References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 1, 2012 |
| Grant date | Oct 10, 2017 |
| Priority date | — |
| Expiry date | Aug 15, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01B35/065
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method of recycling mixtures of hydrochloric and hydrofluoric acid. In particular, a method of recycling hydrofluoric acid and boron fluoride mixtures. A process for upgrading mixtures of fluoroboron compounds contaminated with chlorides as an aqueous solution of boron fluoride hydrates, including a step of vacuum distillation. Also, a method of producing gaseous boron trifluoride.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.