Abstract
This paper refers to the experimental performance evaluation of a tubular type steam reformer for indirect internal reforming in solid oxide fuel cell power generation systems. In the experiment, the spherical ruthenium catalysts were filled inside the reactor. Methane and steam mixture was supplied into the reactor, which was set inside the electric furnace. The composition of dry gas after reforming was measured with a gaschromatographequipment. Throughouttheexperiments, weobtainedtherelationshipbetween the methane conversion ratio to the space velocity. It was clarified that the reforming temperature, the steam to carbon ratio and the fuel flow rate affected the methane conversion ratio, especially the conversion ratio was strongly influenced with the fuel flow rate. In the case of the smaller fuel flow rate, whole reforming reaction reached an equilibrium state. However, the excess fuel lead to the lower conversion ratio.
