Flue gas desulfurization process
US4600568A · kind A · utility
16Cited by
5References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 22, 1985 |
| Grant date | Jul 15, 1986 |
| Priority date | — |
| Expiry date | Mar 22, 2005 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D53/508
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Flue gas is desulfurized by mixing into it at a temperature between about 120.degree. and about 230.degree. C. a finely divided sorbent such as calcium hydroxide and, immediately downstream of the mixing point, spraying the gaseous suspension with an aqueous solution of solubilizing agent such as a deliquescent compound or a strongly ionizing inorganic salt. In one embodiment, make-up sorbent is derived from injection of limestone or dolomite into the combustion zone, and in another embodiment a portion of the solids separated from the flue gas is reactivated for reuse as sorbent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.