Effects of H/sub 2/S on molten carbonate fuel cells. Progress report, October 1-December 31, 1984
This report is a description of work accomplished at the Institute of Gas Technology during the sixth quarterly reporting period from October 1 through December 31, 1984. The overall program objective is to identify the poisoning mechanisms responsible for performance losses observed in molten carbonate fuel cells (MCFC) operating on sulfur-containing gases. The anticipated product from the overall program is a performance model capable of predicting fuel cell performance on a variety of fuels containing trace sulfur contaminants at the parts per million level. This model should aid in arriving at a justifiable specification for sulfur cleanup requirements for MCFC power plants. Work addressed four separate aspects of the sulfur contamination problem. In one bench-scale experiment, IGT-84-D, the impact of 5 ppM of hydrogen sulfide in the fuel upon MCFC performance was investigated at temperatures of 600/sup 0/, 650/sup 0/, and 700/sup 0/C. Of these three, the impact was most severe at the lowest temperature. Previous work with laboratory scale cells (3-cm/sup 2/ electrodes) suggested that the performance degradation caused by hydrogen sulfide was lessened as the temperature was increased and disappeared entirely at 700/sup 0/C. This proved not to be the case in the bench-scale (94-cm/sup 2/ electrodes) experiments. Although the impact of hydrogen sulfide was less at 700/sup 0/C than at 650/sup 0/C, there was, nevertheless, a measurable performance loss noted when hydrogen sulfide contaminants were added to the fuel. Also accomplished during this quarter was the completion of an 1800 hour bench-scale test started in the fifth quarter. This experiment was designed to evaluate the impact of sulfur dioxide in the oxidant gases upon fuel cell performance.
- Research Organization:
- Institute of Gas Technology, Chicago, IL (USA)
- DOE Contract Number:
- AC21-83MC20212
- OSTI ID:
- 5448710
- Report Number(s):
- DOE/MC/20212-1877; ON: DE85016161
- Country of Publication:
- United States
- Language:
- English
Similar Records
Effects of H/sub 2/S on molten carbonate fuel cells. Progress report, January 1-March 31, 1985
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Related Subjects
AROMATICS
STEAM REFORMER PROCESSES
FUEL GAS
CHEMICAL COMPOSITION
MOLTEN CARBONATE FUEL CELLS
OXIDIZERS
POISONING
IMPURITIES
BENCH-SCALE EXPERIMENTS
EXPERIMENTAL DATA
HYDROGEN SULFIDES
MATHEMATICAL MODELS
SHIFT PROCESSES
SPECIFICATIONS
SULFUR DIOXIDE
TEMPERATURE DEPENDENCE
TRACE AMOUNTS
CHALCOGENIDES
CHEMICAL REACTIONS
DATA
DIRECT ENERGY CONVERTERS
ELECTROCHEMICAL CELLS
FLUIDS
FUEL CELLS
FUELS
GAS FUELS
GASES
HIGH-TEMPERATURE FUEL CELLS
HYDROGEN COMPOUNDS
INFORMATION
NUMERICAL DATA
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
REFORMER PROCESSES
SULFIDES
SULFUR COMPOUNDS
SULFUR OXIDES
300502* - Fuel Cells- Performance & Testing