Process for removing carbon dioxide and nitrogen oxides from combustion gases
US5648053A · kind A · utility
55Cited by
4References
3Claims
0Family size
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Key dates
| Filing date | Oct 4, 1995 |
| Grant date | Jul 15, 1997 |
| Priority date | — |
| Expiry date | Oct 4, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02C20/40
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process for removing both CO.sub.2 and NO.sub.x from combustion gases consists, first, in cooling a combustion gas to 50 to 100.degree. C. and adding ozone to oxidize NO in the combustion gas to NO.sub.2. Then in a CO.sub.2 removal step, the gas is brought into contact with an aqueous solution of an alcoholic hydroxyl-containing secondary- or tertiary-amine to remove NO.sub.2 together with CO.sub.2 from the gas.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.