Method for removing sulfur dioxide from flue gases
US4666690A · kind A · utility
9Cited by
8References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 20, 1985 |
| Grant date | May 19, 1987 |
| Priority date | — |
| Expiry date | Dec 20, 2005 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D53/501
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method for removing sulfur compounds from flue gases in which a slurry of calcium oxide and water is formed and exothermically reacted to form a hydrate containing calcium hydroxide in substantially saturated solution. The calcium hydroxide is converted to relatively fine particles as the saturated liquid is flashed to steam. The fine particles are passed in a counter-flow relationship with the flue gases so that the sulfur compounds from the flue gases react with the calcium hydroxide in the particles to form calcium sulfate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.