| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an operating method of a solid oxide fuel cell in which power generation can be resumed rapidly even if operation has been stopped in a high temperature state, and provide a power generating facility of the solid oxide fuel cell using this method. <P>SOLUTION: In this method, a stopping process of power generation operation is carried out in which, after feeding of a fuel gas 1 and air 2 is stopped in the high temperature state by purging the interior of the solid oxide fuel cell 22 with nitrogen gas 3, the power generation operation is stopped in the high temperature state, and a resuming process of power generation operation to resume the power generation operation is carried out in which, after the nitrogen gas 3 is supplied and circulated to fuel electrode sides and oxidation electrode sides of respective cells of the solid oxide fuel cell 22 during stopping of the power generation operation in the high temperature state, the fuel gas 1 is fed and circulated to the fuel electrode sides of respective cells of the solid oxide type fuel cell 22 while gradually increasing it and the air 2 is fed to air electrode sides of respective cells of the solid oxide type fuel cell 22 while gradually increasing it. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
