Layered double hydroxide sorbents for the removal of SO.sub.x from flue gas and other gas streams
US5114898A · kind A · utility
81Cited by
10References
24Claims
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Key dates
| Filing date | Sep 28, 1990 |
| Grant date | May 19, 1992 |
| Priority date | — |
| Expiry date | Sep 28, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2002/78
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Processes for removing noxious sulfur oxides from gas streams, particularly from flue gases of coal-burning power plants, using heated layered double hydroxide (LDH) sorbents are described. The sorbent compositions contain metal components, incorporated into the sorbents either by isomorphous replacement of all or part of M.sup.II and/or M.sup.III ions in layers of LDH structures or by impregnation as a metal salt, to promote the oxidation of sulfur dioxide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.