Patent ID: 8486572

Claim:
A system of fuel cell power generation, comprising: a fuel cell having a fuel gas flow channel and a fuel electrode placed at an atmosphere of said fuel gas flow channel; a fuel gas supply means configured to supply a hydrogen-rich fuel gas to said fuel gas flow channel by connecting said fuel gas flow channel to said fuel gas supply means; and a displacement gas supply means configured to supply, to said fuel gas flow channel, a displacement gas having, as a main ingredient, a compound containing carbon and hydrogen, wherein said fuel gas supply means includes a fuel gas generating means configured to generate a hydrogen-rich fuel gas and a fuel gas supply pipe configured to connect said fuel gas flow channel and said fuel gas generating means, said fuel gas supply pipe is provided with a valve configured to control the supply of said hydrogen-rich fuel gas to said fuel gas flow channel, said displacement gas supply means is connected to said fuel gas supply pipe downstream of said valve, wherein said displacement gas supply means is configured to inject, via said fuel gas supply pipe, said displacement gas into said fuel gas flow channel before connecting said fuel gas flow channel to said fuel gas generating means by opening of said valve at start of power generation by said fuel cell, for displacing said atmosphere of said fuel gas flow channel by said displacement gas.