G104 エタノール水蒸気改質性能へのLHSVと改質温度の影響(OS5 水素・燃料電池)

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  • G104 Effects of LHSV and Reaction Temperature upon Ethanol-Steam-Reforming Performance

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Supposing the design of ethanol steam-reforming reactors, the authors conduct experiments for Cu/ZnO/Al_2O_3 catalyst. Using a household-use-scale reactor with well-controlled temperature distributions, the authors compare experimental results with chemical-equilibrium theories. It has revealed by Shinoki et al. (2011) that the Cu/ZnO/Al_2O_3 catalyst shows rather high performance with high hydrogen concentration C_<H2> at low values of reaction temperature T_R. So, in the present study, the authors reveal the influences of liquid-hourly space velocity LHSV upon concentrations such as C_<H2>, C_<CO2>, C_<CO> and C_<CH4> and the influence of LHSV upon the ethanol conversion X_<C2H5OH>, in a range of LHSV from 0.05h^<-1> to 0.8h^<-1>, at S/C=3.0 and T_R=520K. And, the authors reveal the influences of the thermal profile upon C_<H2>, C_<CO2>, C_<CO>, C_<CH4> and X_<C2H5OH>, for several LHSV's. To conclude, with well-controlled temperatures, the reformed gas can be close to the theory.

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