| 摘要 |
PROBLEM TO BE SOLVED: To provide a hydrogen production method by which hydrogen can be formed at a high efficiency. SOLUTION: The hydrogen production method includes: a pressurizing Bunsen process 1 for reacting an aqueous solution 101 in which sulfur dioxide 111 is dissolved and iodine 108 under a pressurized condition higher than atmospheric pressure to form hydrogen iodide 105 and sulfuric acid 115, and then separating the resulting reaction liquid into a Bunsen heavy liquid 104 much containing hydrogen iodide 105 and a Bunsen light liquid 110 much containing sulfuric acid 115 on the basis of specific gravity by supplying iodine 108 in an excess amount more than the stoichiometric quantity; a distillation process 2 for separating hydrogen iodide 105 by distilling the Bunsen heavy liquid 104 formed in the pressurizing Bunsen process 1 under a pressurized condition higher than atmospheric pressure; a hydrogen iodide decomposition/iodine fixation process 3 for forming hydrogen 102 by decomposing hydrogen iodide 105 separated in the distillation process 2 by thermal energy and at the same time, fixing the formed iodine 108; and an iodine separating process 4 for separating iodine 108 fixed in the hydrogen iodide decomposition/iodine fixation process 3. COPYRIGHT: (C)2007,JPO&INPIT
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