Recovery of chlorine and cyanuric acid values from polychloroisocyanuric acids and salts thereof
US4138559A · kind A · utility
1Cited by
4References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 30, 1978 |
| Grant date | Feb 6, 1979 |
| Priority date | — |
| Expiry date | Jan 30, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D251/36
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for recovering chlorine values from an aqueous solution of a chloroisocyanuric acid compound is disclosed. After reacting a mineral acid with the aqueous solution to form an acidified reaction mixture containing dissolved chlorine, the reaction mixture is fed to a stripping column which employs an inert gas to remove the dissolved chlorine. The stripping column is maintained to provide a continuous liquid phase and a non-continuous gas phase. Chlorine gas is readily recovered in a vessel such as a scrubber. Cyanuric acid may be subsequently recovered from the chlorine-depleted solution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.