The invention discloses a
system and method for improving the preparation speed and efficiency of a solar thermo-chemical fuel. The
system comprises a condensation device (a), a
contact heat exchange device (b), a reactor (c), an
oxygen collecting device (d), a
heat exchanger (e) and a
gas separation and collecting device (f). Compared with a solar thermo-chemical isothermal method, the
system and method for improving the speed and efficiency of preparing the fuel by solar thermo-chemical circulation have the advantages that the two methods are devoted to eliminating the loss of energy for heating a catalyst, but the temperature of the isothermal method is unchanged, and the oxidation
reaction temperature is higher than that of a dual-temperature method, so that the
oxygen vacancy change is relatively low when the reduced
cerium oxide and H2O undergo oxidation reaction, which is unfavorable for fuel production. Through
active cooling of the catalyst, the time required for each cycle of the reactor can be greatly shortened, meanwhile, more
hydrogen is produced in each cycle compared with the isothermal method, moreover, the
reaction rate of the oxidation step can be improved, the heat of the high-temperature reduction step is reasonably utilized, the conversion efficiency of the
solar fuel is improved, use of a
solid-
solid heat exchanger is avoided, and the mechanical properties of the reactor are improved.