Absorption medium and method for removing carbon dioxide from combustion exhaust gas
US12325005B1 · kind B1 · utility
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20Claims
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Key dates
| Filing date | Sep 12, 2024 |
| Grant date | Jun 10, 2025 |
| Priority date | — |
| Expiry date | Sep 12, 2044 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2257/504
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
In some embodiments, an aqueous composition for removing acid gas components from a process gas includes a first cyclic amine having a substituted carbon atom alpha to an amine atom, and a second cyclic amine having two unsubstituted carbon atoms, wherein each of the unsubstituted carbon atoms is alpha to an amine atom. The composition further includes a molar ratio of the first cyclic amine to the second cyclic amine of about 6:1 to about 2:1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.