Process for removing carbon dioxide containing acidic gases from gaseous mixtures using aqueous amine scrubbing solutions
US4112052A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 19, 1977 |
| Grant date | Sep 5, 1978 |
| Priority date | — |
| Expiry date | Dec 19, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02C20/40
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Carbon dioxide containing acidic gases are substantially removed from a normally gaseous mixture by a process comprising contacting the normally gaseous mixture with an aqueous amine solution, wherein at least one of the amines is a sterically hindered amine. The process is operated at a thermodynamic cyclic capacity (as determined from the vapor liquid equilibrium isotherm of the vapor-liquid system) which is greater than in an aqueous amine CO.sub.2 scrubbing process wherein monoethanolamine is the only amine utilized under similar conditions of gaseous feed composition, scrubbing solution composition, temperatures and pressures. A particularly preferred sterically hindered amine is 2-amino-2-methyl-1-propanol.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.