Hydrogen generator and fuel cell system including the same

Abstract

A hydrogen generator (100a) includes: a heater (1) which combusts a mixture gas of combustion fuel and combustion air to generate a combustion gas; a preheat evaporator (6) which heats a raw material and water by the combustion gas generated by the heater to generate a mixture gas of the raw material and the water; a reformer (2) which generates a hydrogen-containing gas by causing the mixture gas generated by the preheat evaporator to pass through a reforming catalyst (2a) heated by the combustion gas; and a shift converter (3) which incorporates a shift catalyst (3a) which reduces, by a shift reaction, carbon monoxide contained in the hydrogen-containing gas generated by the reformer, and further includes a water trapping portion (7) which traps liquid water discharged from the preheat evaporator, and the hydrogen generator (100a) is configured to carry out heat exchange between the hydrogen-containing gas supplied from the reformer to the shift converter and the water in the water trapping portion.

Dependencies are inferred from the claim text.