| US 7,556,875 B2 | ||
| Fuel cell power generation system including an off-gas heating heat exchanger used to heat anode stream off-gas containing hydrogen | ||
| Yuji Mukai, Osaka (Japan); Kunihiro Ukai, Nara (Japan); Akira Maenishi, Osaka (Japan); Tomonori Asou, Nara (Japan); and Yutaka Yoshida, Mie (Japan) | ||
| Assigned to Panasonic Corporation, Osaka (Japan) | ||
| Filed on Jul. 14, 2004, as Appl. No. 10/891,320. | ||
| Claims priority of application No. 2003-274693 (JP), filed on Jul. 15, 2003. | ||
| Prior Publication US 2005/0053806 A1, Mar. 10, 2005 | ||
| Int. Cl. H01M 8/00 (2006.01); F23C 11/04 (2006.01) | ||
| U.S. Cl. 429—26 [429/12] | 11 Claims |
| 3. A fuel cell power generation system comprising:
a reforming catalyst body configured to generate a reformed gas containing hydrogen from a feed gas and water;
a fuel cell configured to generate electric power by consuming the reformed gas, the fuel cell having a cathode and an anode,
the cathode consuming an oxidizing gas and the anode consuming the reformed gas, the anode discharging an off gas containing
hydrogen gas for discharging a combustion gas for heating the reforming catalyst body;
an off gas water separator located downstream of the anode and configured to separate steam from the off gas containing hydrogen
gas and to condense the separated steam into water which is discharged outside the system;
an off gas heating heat exchanger located downstream of the off gas water separator and configured to heat the off gas containing
hydrogen gas from the off gas water separator by heat exchange with the combustion gas; and
an off gas cooling heat exchanger configured to cool the off gas containing hydrogen gas by heat exchange, such that the steam
is separated by cooling the off gas in the off gas cooling heat exchanger.
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