FUEL CELL SYSTEM

摘要

A fuel cell system (100) includes: a reformer (11) configured to generate a reformed gas using a raw material; a fuel cell (12) configured to generate electric power using the reformed gas; a raw material supply passage (13) through which the raw material supplied to the reformer (11) flows; a hydro-desulfurizer (10) configured to remove a sulfur component in the raw material supplied to the reformer (11); a recycle passage (14) through which a part of the reformed gas is supplied as a recycled gas to the raw material supply passage (13) provided upstream of the hydro-desulfurizer (10); a temperature detector (15) configured to detect a temperature of the hydro-desulfurizer 10; and a controller (30), wherein: when the temperature of the hydro-desulfurizer (10) reaches a predetermined temperature, the controller (30) increases a flow rate of the raw material from a predetermined flow rate by a flow rate corresponding to a flow rate of the recycled gas, and then, the controller (30) starts supplying the recycled gas to the recycle passage; and after the recycled gas reaches an upstream end of the recycle passage (14) through the raw material supply passage (13), the controller (30) returns the flow rate of the raw material to the predetermined flow rate.