Absorbent, CO2 or H2S reducing apparatus, and CO2 or H2S reducing method using absorbent
US8597418B2 · kind B2 · utility
5Cited by
13References
3Claims
0Family size
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Key dates
| Filing date | Jun 17, 2008 |
| Grant date | Dec 3, 2013 |
| Priority date | — |
| Expiry date | Jun 17, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/151
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An absorbent according to the present invention absorbs CO2 or H2S contained in flue gas emitted from a power generating plant such as a thermal plant, and contains three or more amine compounds selected from linear or cyclic amine compounds having a primary amino group, and linear or cyclic amine compounds having a secondary amino group. By way of a synergetic effect of the mixture of these compounds, the absorption speed of CO2 or H2S absorption is improved. A small amount of CO2 contained in a large amount of boiler flue gas can be absorbed efficiently.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.