| 摘要 |
PROBLEM TO BE SOLVED: To provide an apparatus and a method for producing hydrogen where hydrogen can be produced and supplied not only at a reduced cost but also in a shorter time than those in a conventional technique. SOLUTION: The apparatus for producing hydrogen comprises a reduction means wherein hydrogen is supplied and an iron oxide and hydrogen are reacted and then iron and steam are separated, an oxidation means wherein the iron reduced in a pressure vessel 28 and the supplied water heated with a heater 34 or steam are reacted in a pressure vessel 28 and then hydrogen and the iron oxide are separated and a pressure control means where a control valve 38 to control the pressure of hydrogen generated by an oxidation reaction and easily obtained because of remaining in the pressure vessel 28. Hydrogen can be produced and supplied with desired pressure and its cost is suppressed inexpensively because of using an oxidizable and inexpensive metal. As hydrogen is generated by the reaction between water or steam and the metal, hydrogen can be obtained in a shorter time as compared to the case wherein electrolysis or hydrogen transportation is applied. COPYRIGHT: (C)2007,JPO&INPIT
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