POWER GENERATION SYSTEM USING MOLTEN CARBONATE FUEL CELL

摘要

A power generation system uses fuel cells (C, S) stacked via separators (31). Cooling plates (33) are provided in the fuel cell stack (S). Passages (34) are formed in each cooling plate (33) for allowing raw-material-gas-for-reformation (which also serves as stack-cooling-gas) to flow therethrough and the passages (34) are filled with reforming catalyst (61). An external reformer (37) which includes a combustion section (39) and a reforming section (38) is provided outside of the fuel cell stack (5). A stack-cooling-gas-line (45) is connected to the passages (34) of the cooling plates (33) for introducing the raw-materialgas-for-the-reformation (the stack-cooling-gas) into the passages (33). A line (50) for gas-for-processing is connected to the reforming section (38) of the external reformer (37) for feeding raw-material -gas-for-processing to the reforming section (38). An anode gas feed line (52) is provided for feeding to the anode (3) the reformed gas which has been reformed through the passages (34) of the cooling plates (33) and the reformed gas which has been reformed by the reforming section (38) of the external reformer (37). An anode exit gas line (53) is provided for feeding the anode exit gas to the combustion section (39) of the external reformer (37). A cathode gas feed line (55) is provided for feeding the combustion exhaust gas discharged from the combustion section (39) to the cathode (2) with air (A). A cathode exit gas line (56) is provided for discharging the cathode exit gas.