PURPOSE: To provide a fuel cell power generating device, by which a conversion catalyst can be reduced while the size and the cost of the device can be reduced.
CONSTITUTION: A reformed gas in an outlet of a reforming device 1 is cooled down to the predetermined medium temperature by a heat exchanger 3, and then, supplied to a medium temperature conversion catalyst filling device 10. Then, the reformed gas is cooled down to the predetermined low temperature by a cooling means 11 and is supplied to a low temperature conversion catalyst filling device 12. Carbon monoxide in the reformed gas is reduced by a conversion reaction via a medium temperature conversion catalyst A2 in the medium temperature conversion catalyst filling device 10 and a low temperature conversion catalyst A1 in the low temperature conversion catalyst filling device 12. As the medium temperature conversion catalyst A2. has larger activity than the low temperature conversion catalyst A1 excepting the case that carbon monoxide concentration is low, the quantity of the inverting catalyst in the device can be as much as the quantity of the medium temperature conversion catalyst A2 used on upstream side of the reformed gas having larger carbon monoxide concentration.
DOI KUNIHIRO
TSURU KIYOSHI
