SOLID OXIDE FUEL CELL SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide a solid oxide fuel cell system capable of improving the power generation efficiency of a power generation system while reducing costs of peripheral equipment of the solid oxide fuel cell system.

SOLUTION: The solid oxide fuel cell system comprises: a desulfurizer 24 for removing sulfur components contained in a raw fuel gas; a partial oxidation reactor 26 for causing a partial oxidation reaction of the fuel gas; and a solid oxide fuel cell 22 that generates power by carrying out a fuel cell power generation reaction between the fuel gas supplied to the side of a fuel electrode 32 and air supplied to the side of an air electrode 34. A blower 72 supplies air so that the amount of oxygen in the air supplied to the partial oxidation reactor 26 falls within a range of 5 to 10% of the amount of oxygen required for complete combustion of the raw fuel gas. An oxidation air humidifying means 56 humidifies air for partial oxidation supplied to the partial oxidation reactor 26 to have a dew point of 80°C or higher by bringing the air into contact with humidifying water heated by utilizing exhaust heat generated at the solid oxide fuel cell 22.

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