Process for converting sulfitic solutions by means of ammonium bisulfate with SO.sub.2 production
US4146579A · kind A · utility
1Cited by
3References
8Claims
0Family size
Assignee
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Key dates
| Filing date | Oct 11, 1977 |
| Grant date | Mar 27, 1979 |
| Priority date | — |
| Expiry date | Oct 11, 1997 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01C1/10
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
This process avoids the disadvantages of admixing hot molten ammonium bisulfate with ammonium sulfites solutions. Overflowing hot molten ammonium bisulfate is admixed with a stream of aqueous ammonium bisulfate solution, said solution being preferably circulated in a closed loop. A portion of the resulting solution is then used to acidify the ammonium sulfites solution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.