Ionic liquids as amine promoter solvents for removal of carbon dioxide
US9186618B2 · kind B2 · utility
5Cited by
18References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 9, 2011 |
| Grant date | Nov 17, 2015 |
| Priority date | — |
| Expiry date | Aug 7, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02C20/40
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Ionic liquids are capable of acting as solvents for amine CO2 absorbent compounds in CO2 separation processes and when so used enhance the sorption of the CO2 by the amine. A cyclic sorption process for separating CO2 from a gas stream, such as flue gas or natural gas, brings the gas stream into contact with an absorbent solution of an amine CO2 sorbent in an ionic liquid solvent followed by desorbing the CO2 to regenerate the amine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.