Process for the recovery of sulfur dioxide from gas flows
US4948572A · kind A · utility
7Cited by
5References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 31, 1989 |
| Grant date | Aug 14, 1990 |
| Priority date | — |
| Expiry date | Jan 31, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01B17/60
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
SO.sub.2 containing gas is purified by means of an aqueous absorption solution, and SO.sub.2 is regenerated from this solution. There is used an absorption solution containing a phosphate buffer, and SO.sub.2 is removed from the absorption solution together with water by evaporation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.