JP-8 Catalytic Cracking for Compact Fuel Processors
AIR FORCE RESEARCH LAB TYNDALL AFB FL
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In processing heavier hydrocarbons such as military logistic fuels JP-4, JP-5, JP-8 and JP-100, kerosene, and diesel to produce hydrogen for fuel cell use, several issues arise. First, these fuels have high sulfur content, which can poison and deactivate components of the reforming process and the fuel cell stack second, these fuels may contain non-volatile residue NVR, up to 1.5 vol. , which could potentially accumulate in a fuel processor and third is the high coking potential of heavy hydrocarbons. Catalytic cracking of a distillate fuel prior to reforming can resolve these issues. Cracking using an appropriate catalyst can convert the various heavy organosulfur species in the fuel to lighter sulfur species such as hydrogen sulfide H2S, facilitating subsequent sulfur adsorption on zinc oxide ZnO. Cracking followed by separation of light cracked gas from heavies effectively eliminates non-volatile aromatic species. ... Cracking conversion results, as well as sulfur and hydrocarbon distribution in the light cracked gas, are presented for the two catalysts to provide a performance comparison.
- Physical Chemistry
- Electrochemical Energy Storage