| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for operating a reformed gas production unit where the reduction of catalytic activity caused by the precipitation of carbon can be prevented while realizing high reforming efficiency. <P>SOLUTION: The fluid to be reformed comprising water vapor, carbon dioxide, ≥2C hydrocarbon fuel and oxygen is fed to a reaction chamber in a low temperature reformer 1 incorporated with a catalyst for reforming, and temperature control is performed in such a manner that the maximum temperature of the fluid to be reformed in contact with the catalyst for reforming is regulated to the temperature range of 200 to 800°C, and also, to the thermal decomposition temperature of the fuel or lower, so that a reformed gas comprising methane, hydrogen and carbon monoxide is produced. Further, gaseous oxygen and the second fluid to be reformed are fed to a second reaction chamber in a high temperature reformer 2 incorporated with a second catalyst for reforming, and temperature control is performed in such a manner that the maximum temperature of the second fluid to be reformed in contact with the second catalyst for reforming is held to the temperature range of 400 to 1,200°C, and also, the outlet temperature in the second reaction chamber is made higher than the outlet temperature in the reaction chamber, so that a second reformed gas comprising hydrogen, and carbon monoxide is produced. <P>COPYRIGHT: (C)2004,JPO&NCIPI |
