| abstract |
A fuel cell system for preventing deterioration of a combustion state in a combustion section at startup. [Solution] The fuel cell system includes a reformer, a raw material supplier that supplies the raw material to the reformer, a desulfurizer that desulfurizes the raw material, a flow controller that controls the flow of gas in the recycle gas channel, A water vapor supply device for supplying water vapor to the vessel, a fuel cell, a combustion unit for burning off gas discharged from the fuel cell, and a controller. The raw material discharged from the battery is burned in the combustion section, and then the gas discharged from the reformer is circulated in the recycle gas flow path by the flow controller, and then the water vapor is supplied to the reformer by the water vapor feeder. Alternatively, the gas discharged from the reformer is circulated in the recycle gas flow path by the flow controller, and then the raw material discharged from the fuel cell as off-gas is combusted in the combustion section, and then steamed. To supply steam by feeder. [Selection] Figure 1 |