START-UP PROTOCOL OF SELF-SUSTAINED SOLID OXIDE FUEL CELL SYSTEM

摘要

PURPOSE: An operation method of a self-sustained solid oxide fuel cell system is provided to minimize the heat amount supplied from the outside of the system in an initial driving of the system. CONSTITUTION: An operation method of a self-sustained solid oxide fuel cell system comprises the following steps: supplying air and fuel to a reformer and heating the reformer(S10); generating reformed gas by supplying the fuel, the air, and water to the reformer(S20); supplying the air to an air electrode(S30); generating fuel gas by supplying exhaust gas discharged from a fuel cell stack and the reformed gas to a catalytic combustor(S40); heating the fuel cell stack(S60); stop supplying the reformed gas to the catalytic combustor, and supplying the reformed gas to a complex heat exchanger(S100); and supplying the exhaust gas discharged from the fuel electrode and the air electrode to the catalytic combustor.