| 摘要 |
PURPOSE:To enhance reliability of a fuel reforming device of a fuel cell for a long time. CONSTITUTION:Temperature sensors 5, 6 for detecting catalyst temperatures Ti, To in the vicinities of the inlet and outlet of a catalyst layer 1 inside a reaction tube 2 are installed in a fuel reformer 4 having the reaction tube 2 in which a catalyst 1 is filled and a burner 3 for heating the reaction tube 2. Combustion of the burner 3 is controlled by the output of the catalyst layer outlet temperature sensor 6, and temperature of a fuel gas supplied to the reaction tube 2 is controlled by the outlet of the catalyst layer inlet temperature sensor 5. Since the combustion of the reformer is controlled by the catalyst layer outlet temperature To, excess increase in catalyst temperature is prevented even with a heavy load, and reaction tube temperature Tr can be decreased compared with the traditional system in ligh load operation. The use of fuel is saved and overheat of the catalyst is prevented. |
