Method for removing sulfides from industrial gas
US4539189A · kind A · utility
19Cited by
3References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 23, 1984 |
| Grant date | Sep 3, 1985 |
| Priority date | — |
| Expiry date | Jan 23, 2004 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D53/1493
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Process and composition for removing H.sub.2 S and like sulfides from gas streams by contact with a substituted aromatic nitrile having an electron-attracting substituent on the aromatic ring at least as strong as halogen (e.g., isophthalonitrile) and an organic tertiary amine in an inert organic solvent such as N-methyl-2-pyrrolidone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.