Sulfur control in ion-conducting membrane systems
A method for controlling the sulfur dioxide partial pressure in a pressurized, heated, oxygen-containing gas mixture which is contacted with an ion-conducting metallic oxide membrane which permeates oxygen ions. The sulfur dioxide partial pressure in the oxygen-depleted non-permeate gas from the membrane module is maintained below a critical sulfur dioxide partial pressure, p.sub.SO2 *, to protect the membrane material from reacting with sulfur dioxide and reducing the oxygen flux of the membrane. Each ion-conducting metallic oxide material has a characteristic critical sulfur dioxide partial pressure which is useful in determining the required level of sulfur removal from the feed gas and/or from the fuel gas used in a direct-fired feed gas heater.
- Research Organization:
- Air Products and Chemicals, Inc., Allentown, PA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- FC26-98FT40343
- Assignee:
- Air Products and Chemicals, Inc. (Allentown, PA)
- Patent Number(s):
- 6,602,324
- Application Number:
- 10/015,892
- OSTI ID:
- 1174428
- Country of Publication:
- United States
- Language:
- English
Similar Records
Control of differential strain during heating and cooling of mixed conducting metal oxide membranes
Ion transport membrane module and vessel system