SOLID OXIDE FUEL CELL SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide a solid oxide fuel cell system capable of efficiently and stably operating while reducing the amount of water to be supplied.SOLUTION: The solid oxide fuel cell system according to the present invention includes: a solid oxide fuel cell 6 that generates power by utilizing power generation reaction using air and a fuel gas supplied; a combustion section 23 that allows a fuel not used in the solid oxide fuel cell 6 to combust with air and generates an exhaust gas; an air heat exchanger 5 that heats air to be supplied to the solid oxide fuel cell 6 by utilizing the heat of the exhaust gas; a desulfurizing section 3 that removes a sulfur component contained in the supplied material gas by means of hydrogen desulfurization; a first reformer 4 that generates the fuel gas from the material gas from which the sulfur component is removed by the desulfurizing section 3; a second reformer 8 that reforms by means of partial oxidation a part of the material gas from which the sulfur component is removed by the desulfurizing section 3 and returns the obtained reformed gas to the upstream of the desulfurizing section 3.