| 摘要 |
Provided is a method for stopping an indirect internal reforming type SOFC which is capable of performing reliable reforming, preventing anode oxidation degradation, saving fuel, and saving time. A reforming catalyst layer temperature T is measured, and FkCALC is determined. In the case where FkCALC = FkE is satisfied, T is measured, and FkCALC and FkMinCALC are determined. In the case where FkMinCALC = FkE is satisfied, the flow amount of reformer supply fuel is set to FkE, and the process is shifted to Step D. In the case where FkCALC = FkMinCALC < FkE is satisfied, the following Steps C6 to C9 are sequentially performed: C6) the temperature of the reforming catalyst layer is increased, C7) T is measured, and FkCALC and FkMinCALC are determined, C8) in the case where FkCALC < FkE is satisfied, the flow amount of the reformer supply fuel is set to FkMinCALC, and the process is returned to Step C6, and C9) in the case where FkCALC = FkE is satisfied, the flow amount of the reformer supply fuel is set to FkE, and the process is shifted to Step D, and D) the lowering of an anode temperature below an oxidation degradation point is awaited. FkE and the like are defined in the specification. |
