Claims
- 1. A method of selectively removing hydrogen sulfide from a mixture of gases including carbon dioxide, comprising:
- contacting a first immobilized liquid membrane with said mixture, said first immobilized liquid membrane consisting of a carbonate bicarbonate mixture to allow facilitated transport of hydrogen sulfide through said first membrane to a porous gas-permeable barrier;
- passing gases emerging from said first membrane through said gas-permeable barrier; and
- contacting a second immobilized liquid membrane with gases emerging from said gas-permeable barrier, said second immobilized liquid membrane consisting of a carbonate/bicarbonate mixture to allow facilitated transport of hydrogen sulfide emerging from said gas-permeable barrier through said second membrane.
- 2. The method of claim 1 including the step of maintaining partial pressure of hydrogen sulfide emerging from said second membrane at a lower value than the partial pressure of hydrogen sulfide in said mixture of gases.
- 3. The method of claim 1 including the step of continually sweeping gases emerging from said second membrane with a flow of sweep fluid.
Parent Case Info
This is a division of application Ser. No. 599,871, filed July 28, 1975.
US Referenced Citations (2)
Number |
Name |
Date |
Kind |
3624983 |
Ward et al. |
Dec 1971 |
|
3819806 |
Ward et al. |
Jun 1974 |
|
Divisions (1)
|
Number |
Date |
Country |
Parent |
599871 |
Jul 1975 |
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