| 摘要 |
PURPOSE:To prevent any breakage of the reformer tube and the reformation catalyst so as to increase the life of a fuel cell power generation system by heating the reformer tube by introducing air and a reformed gas from the reformer into a burner. CONSTITUTION:When stopping operation of a fuel cell power generation system while excluding a reformer 1 for some reasons such as demand and supply of electric power, control valves 19 and 20 are closed to stop power generation by a fuel cell 10 and also control valves 21 and 22 are closed to cut off the connection between the cell 10 and the reformer 1. During suspension of power generation, bypass valves 29 and 31 are opened to introduce a reformed gas from the reformer 1 and air from a compressor 17 into an auxiliary burner 27 and combust the gas and the air to heat a reformer tube 3 and a reformation- reaction-catalyzing layer 2 thereby maintaining the temperature of the tube 3 at the same level as that during operation of the system. Because of the above structure, it is possible to avoid a rapid change in the temperature of the reformer tube 3. Consequently, any breakage of the reformer tube 3 and the reformation catalyst is prevented, thereby increasing the life of the fuel cell power generation system. |
