Regeneration of lime from sulfates for fluidized-bed combustion
US4197285A · kind A · utility
17Cited by
3References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 7, 1977 |
| Grant date | Apr 8, 1980 |
| Priority date | — |
| Expiry date | Dec 7, 1997 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01F11/02
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
In a fluidized-bed combustor the evolving sulfur oxides are reacted with CaO to form calcium sulfate which is then decomposed in the presence of carbonaceous material, such as the fly ash recovered from the combustion, at temperatures of about 900.degree. to 1000.degree. C., to regenerate lime. The regenerated lime is then recycled to the fluidized bed combustor to further react with the evolving sulfur oxides. The lime regenerated in this manner is quite effective in removing the sulfur oxides.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.