Sulphur dioxide gas scrubbing process
US4255402A · kind A · utility
3Cited by
5References
9Claims
0Family size
Inventor
Key dates
| Filing date | Aug 13, 1979 |
| Grant date | Mar 10, 1981 |
| Priority date | — |
| Expiry date | Aug 13, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01B17/05
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Sulfur dioxide is removed from a gas stream by contacting the gas with an aqueous solution containing sulfite anion, magnesium cation, and one or more other cations whose sulfite salts are more soluble than magnesium sulfite. The contacting solution is regenerated with magnesium oxide or hydroxide and then recycled.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.