| 摘要 |
<P>PROBLEM TO BE SOLVED: To economically prevent oxidation of a cell by using fuel gas without using nitrogen gas or hydrogen gas when the operation of a solid oxide fuel cell starts or stops, or a cell main part passes through an oxidation temperature region. <P>SOLUTION: A first supply means supplying hydrogen-rich fuel gas produced by reforming steam, and a second supply means supplying hydrogen-rich fuel gas produced by reforming fuel raw gas by partial oxidation are installed in the solid oxide fuel cell. When power generation starts, fuel gas of large flow rate necessary for power generation is supplied to the cell main part with the first supply means, and in the start or stop of power generation, when the cell main part passes through the cell oxidation temperature region, fuel gas produced by partial oxidation is supplied to the cell main part at a small flow rate necessary for preventing oxidation with the second gas supply system. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
