SYSTEM AND METHOD FOR PRODUCING HYDROGEN

摘要

[Problem] To control the temperature of dehydrogenation to an appropriate range to enable efficient and stable hydrogen generation when exhaust gas of power generation is used as a heat source for the dehydrogenation. [Solution] A hydrogen generation system (1) includes: a dehydrogenation device (51) that generates hydrogen from organic hydride by dehydrogenation in the presence of a catalyst; a first power generation unit (2) that generates power from combustion gas energy; an exhaust heat recovery unit (3) that recovers heat from exhaust gas of the first power generation unit; a heat exchanger (21) that carries out heat exchange between the exhaust gas and a heating medium in the exhaust heat recovery unit; and circulation lines (L1 to L3) that introduce the heating medium heated by the heat exchanger into the dehydrogenation device in a liquid state and circulate the same between the dehydrogenation device and the heat exchanger. An introductory temperature of the heating medium in the dehydrogenation device is in the range of 352 to 392°C, an exhaust temperature of the heating medium is in the range of 337 to 367°C, and the temperature difference between the introductory temperature and the exhaust temperature is in the range of 10 to 50°C.