| 摘要 |
PROBLEM TO BE SOLVED: To provide a solid oxide fuel battery system that can inexpensively detect deterioration of catalyst at a combustion catalyst section on the basis of the temperature of process gas supplied to the combustion catalyst section and the temperature of process gas discharged from the combustion catalyst section.SOLUTION: A controller 53 is provided with temperature difference calculation means 54 and catalyst deterioration determining means 55. To the controller 53, an opening/closing valve 7, an air supply valve 19 capable of adjusting the flow amount to perform air supply and stop, a water supply valve 20 capable of adjusting the flow amount to perform supply and stop of reformed water to a reformer 1, and a buzzer 21 for informing deterioration of catalyst are connected. The temperature difference calculation means 54 calculates the difference between the entrance temperature measured by an entrance temperature sensor 51 and the exit temperature measured by an exit temperature sensor 52. The catalyst deterioration determining means 55 compares the temperature difference with a set value. When the output temperature difference is not more than the set value, the catalyst deterioration determining means 55 determines that the catalyst is deteriorated, closes the opening/closing valve 7, the air supply valve 19 and the water supply valve 20, stops power generation and starts the buzzer 21 to inform catalyst deterioration.SELECTED DRAWING: Figure 4 |
