エタノール水蒸気改質性能へのLHSVと改質温度の影響

抄録

Supposing the design of ethanol steam-reforming reactors, the authors conduct experiments for Cu/ZnO/Al₂O₃ 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 Cu/ZnO/Al₂O₃ 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 0.05 h^-1 to 0.8 h^-1, at S/C = 3.0 and T_R = 520 K. 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.