Process to purify gas containing hydrogen sulphide by means of amines
US3958943A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 12, 1974 |
| Grant date | May 25, 1976 |
| Priority date | — |
| Expiry date | Sep 12, 1994 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10K1/143
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An improved process for purifying gas containing hydrogen sulphide and possibly other acid impurities, by means of amines, consisting of absorption of these impurities by contact between the gas for purification and an amine solution, particularly a mono- or di-ethanolamine solution, steam regeneration of the amine solution after it has fixed the acid compounds, and recycling of the regenerated solution to the absorption zone, characterized by the fact that the sulphur content of the regenerated amine solution is kept at an optimum level by varying the flow of regenerating steam. This improved process ensures better elimination of acid compounds, particularly hydrogen sulphide, by means of amines, and keeps the cost of purification as low as possible.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.