Process for converting cyclic urea to corresponding diamine in a gas treating system
US4282193A · kind A · utility
4Cited by
8References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 19, 1980 |
| Grant date | Aug 4, 1981 |
| Priority date | — |
| Expiry date | Feb 19, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02C20/40
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Acidic gases such as carbon dioxide are removed from a gaseous mixture including the acidic component by contacting the gaseous mixture in a scrubbing system with an acid absorbing solution comprising a basic alkali metal compound and an activator, during which process at least a portion of the activator is converted to cyclic urea. At least a portion of the scrubbing solution is transferred to a thermal conversion zone wherein at least a portion of the cyclic urea is converted back to the activator afterwhich the scrubbing solution is returned to the scrubbing system from the thermal conversion zone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.