| 摘要 |
<P>PROBLEM TO BE SOLVED: To effectively recover exhaust heat generated in a fuel cell device by heat exchange with exhaust heat recovery water, and to improve durability of a catalyst of a CO remover by lowering a dew point of a CO conversion gas. <P>SOLUTION: This heat recovery system in a fuel cell device is provided with a fuel reform part 4 having a reformer 1, a CO converter 2, and a CO remover 3 in this order from the upstream side for producing hydrogen from a fuel gas, and a fuel cell part 5 generating power by reacting the hydrogen produced by the fuel reform part 4 with oxygen, and is structured to recover heat by exchanging the heat of a cathode off-gas exhausted from the cathode side of the fuel cell part 5 and that of a CO conversion gas converted by the CO converter 2 and delivered to the CO remover 3 with the heat of exhaust heat recovery water. A cathode off-gas heat exchange part 7 executing heat exchange between the exhaust heat recovery water and the cathode off-gas is arranged on the downstream side of a CO conversion gas heat exchange part 6 executing heat exchange between the exhaust heat recovery water and the CO conversion gas. <P>COPYRIGHT: (C)2008,JPO&INPIT |
