HYDROGEN FORMING DEVICE

摘要

Since carbon monoxide is generated as subcomponent in a water vapor reforming reaction, in many cases, a shifter for conducting a shift reaction on water and carbon monoxide is used in combination. Generally, in the case of a stable operation, a concentration of carbon monoxide hardly increases. However, when using conditions of a catalyst are changed due to external factors in the shifter, a concentration of carbon monoxide increases. A device includes a reformer 1 containing carbon monoxide and water vapor, and a shifter 3 having a shift catalyst body 3a, and the device supplies hydrogen gas to the shifter from a gas supply part 1. In the above device, carbon monoxide concentration detection means 6 is provided at an exit of hydrogen gas of the shifter. When a concentration of carbon monoxide that is detected by the carbon monoxide concentration detection means is larger than a set value, a quantity of water vapor is increased in the gas supply part 1.