Claims
- 1. A method of selectively removing hydrogen sulfide from a mixture of gases including carbon dioxide, comprising:
- contacting an immobilized liquid membrane with said mixture to allow facilitated transport of hydrogen sulfide through said membrane to a porous gas-permeable barrier;
- passing gases emerging from said membrane through said gas-permeable barrier;
- absorbing in a sweep liquid the gases emerging from said gas-permeable barrier; and
- said sweep liquid comprising a liquid selected from a group consisting of a hot carbonate solution, a solution of redox agent which converts hydrogen sulfide to sulfur, and an ethanol amine solution.
- 2. The method of claim 1 including the step of regenerating said sweep liquid by contacting an additional porous gas permeable barrier with said sweep liquid and absorbing in a steam sweep the gases emerging from said additional porous gas permeable barrier.
- 3. The method of claim 1, wherein the sweep liquid is supplied at approximately the same pressure as the mixture of gases.
Parent Case Info
This is a division, of application Ser. No. 599,872, filed July 28, 1975, and now abandoned.
US Referenced Citations (5)
Divisions (1)
|
Number |
Date |
Country |
Parent |
599872 |
Jul 1975 |
|