高次炭化水素燃料を用いた水蒸気改質器による水素製造

概要

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The authors develop a small and simple steam-reforming reactor in a home-use size for n-dodecane as a heavy-hydrocarbons fuel. Under such a well-controlled condition by a thermal diffuser as the reactor satisfies two target-temperature criteria, the authors measure the inside-temperature profile and the hydrogen-molecule ratio (concentration) RH2, together with the molecule ratios RCH4, RCO and RCO2 of other main gass components such as CH4, CO and CO2, respectively. In addition, the authors conduct theoretical calculations, as well as experiments. As a result, the authors successfully achieve suitable inside-temperature profiles. The effects of the steam-to-carbon molar ratio S/C upon RH2, RCH4, RCO and RCO2 are shown, experimentally and theoretically. The experimental results agree well with the theoretical ones. Besides, both carbon balance and conversion ratio show high accuracy in experiments.