Process for removing nitrogen oxides and sulfur oxides from gaseous stream
US5366710A · kind A · utility
12Cited by
5References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 10, 1993 |
| Grant date | Nov 22, 1994 |
| Priority date | — |
| Expiry date | May 10, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01F11/464
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process for removing NO.sub.x and/or SO.sub.x from a gaseous stream by oxidation with a fine flocculent acidic catalyst slurry which is regenerable during the process, in particular by pH adjustment in the absence of added heat. The catalyst slurry comprises MnO.sub.2, Mn.sub.2 O.sub.3, and Mn.sub.3 O.sub.4 having pH in the range from about 0.5 to about 6.5 and is prepared by aerating a divalent manganous salt in an aqueous solution having a pH in the range from about 8.0 to about 13.5.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.