| 摘要 |
<P>PROBLEM TO BE SOLVED: To enhance efficiency of the whole of a system by effectively using hydrogen in hydrogen-containing off gas exhausted from a power generation system. <P>SOLUTION: A domestic fuel gas manufacturing system 10 is equipped with a reformer 16 obtaining reformed gas by reforming hydrogen-containing fuel, a hydrogen purification device 20 purifying fuel gas by removing unnecessary components from the reformed gas, and a stationary fuel cell 40 generating electric power with purified fuel gas. In the stationary fuel cell 40, a circulation passage 48 is installed by connecting a fuel gas inlet 46a and a fuel gas outlet 46b, and a purge passage 54 is connected to the circulation passage 48 through a three-way valve 52. The purge passage 54 is connected to the upstream part of the hydrogen purification device 20, the hydrogen-containing off gas exhausted from the stationary fuel cell 40 is supplied as purge gas to the hydrogen purification device 20, and hydrogen in the purge gas is reused. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
