DESULFURIZATION OF LIQUID HYDROCARBON FUEL FOR FUEL CELLS.
Interim technical progress rept., 10 Jan-10 Jul 66,
PRATT AND WHITNEY AIRCRAFT EAST HARTFORD CONN
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It was the purpose of this contract to investigate the feasibility of using, and to select a method for utilizing, sulfur-bearing fuels of the JP-4, CITE or Diesel type in fuel cell powerplants by desulfurization of the fuel. System studies were made and catalytic guard chamber materials evaluated experimentally to select a desulfurization technique and guard chamber catalyst-absorbent material. These investigations show that using the optimum desulfurization process with a 100-hour replaceable cartridge results in approximately a 3 weight increase in the indirect hydrocarbon-air fuel cell system if JP-4 with 400 ppm sulfur is used rather than a sulfur-free hydrocarbon fuel. Two catalysts both of which are high nickel content, hydrogenation catalysts were found to perform very effectively as catalyst-absorbent materials for desulfurization in the presence of steam reformer reactants. Finally, a demonstration test with JP-4 containing 470 ppm sulfur was run using an existing hydrogen generator modified for operation with a desulfurization cartridge and utilizing recycled dilute hydrogen. Author
- Industrial Chemistry and Chemical Processing
- Electric Power Production and Distribution