METHOD FOR PRODUCING HYDROGEN BY MEANS OF HYDROTHERMAL DECOMPOSITION, AND DEVICE FOR PRODUCING HYDROGEN

摘要

The disclosed method for producing hydrogen by means of hydrothermal decomposition can efficiently use solar energy obtained by means of a beam down concentration system. Further disclosed is a device for producing hydrogen. While cycling within a reaction vessel (1) a fluidized bed (2) comprising metal oxide particles, two reactions are simultaneously caused to proceed: a thermal reduction reaction, which is an oxygen-generating reaction wherein a portion of the aforementioned fluidized bed (2) is heated by solar light (S) in a nitrogen atmosphere, which is a low oxygen partial pressure gas, releasing oxygen from the metal oxide; and a hydrothermal decomposition reaction, which is a hydrogen-generating reaction wherein water vapor is brought into contact with the metal oxide after oxygen has been released, generating hydrogen.