Thermal/chemical degradation of inorganic membrane materials
The overall objective of this program is to evaluate the long-term thermal and chemical degradation of inorganic membranes that are being developed to separate gaseous products produced by the gasification or combustion of coal in fixed-, fluidized-, and entrained-bed gasifiers, direct coal-fired turbines, and pressurized-fluidized-bed combustors. Specific objectives of this program are to (1) quantify the extent of the degradation process for the three most detrimental mechanisms by performing laboratory-scale experiments, and (2) develop a predictive model for membrane degradation under operating conditions. At present, no inorganic membranes are commercially available for application in the high-temperature, high-pressure (HTHP) gas environments encountered in integrated gasification combined cycle (IGCC), pressurized fluidized bed combustion (PFBC), and direct coal fired turbine (DCFT) applications. Most of the inorganic membrane development efforts have focused on hydrogen separation membranes which may be used in an IGCC system for maximizing hydrogen production from coal gas or to remove H{sub 2}S and NH{sub 3} contaminants via thermal or catalytic decomposition of these contaminants. The candidate inorganic membranes may be grouped as follows: dense metallic membranes; silica based membranes; alumina based membranes; and carbon based membranes. Results are reported for membrane characterization done so far.
- Research Organization:
- SRI International, Menlo Park, CA (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC21-92MC28053
- OSTI ID:
- 10185708
- Report Number(s):
- DOE/MC/28053--94/C0367; CONF-9406131--24; ON: DE95000547; BR: AA1505000
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
010402
ALUMINIUM OXIDES
CARBON DIOXIDE
CARBON MONOXIDE
CARBONACEOUS MATERIALS
DECOMPOSITION
EXHAUST GASES
EXPERIMENTAL DATA
FLUIDIZED-BED COMBUSTORS
FUEL GAS
GAS GENERATORS
GLASS
HOT GAS CLEANUP
HYDROGEN
HYDROGEN SULFIDES
MATERIALS TESTING
MEMBRANES
MOLECULAR SIEVES
PALLADIUM
PLATINUM
PURIFICATION AND UPGRADING
SILICON OXIDES
THERMAL DEGRADATION