Patent ID: 7192669

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 for supplying a fuel gas to said fuel gas flow channel; and a displacement gas supply means for supplying, to said fuel gas flow channel, a displacement gas having, as a main ingredient, a compound containing carbon and hydrogen, said fuel gas supply means comprising said fuel gas generating means for generating a hydrogen-rich fuel gas from a source material having, as a main ingredient, a compound containing carbon and hydrogen, said system further comprising a steam supply means for supplying a steam to said fuel gas generating means thereby to displace inside atmosphere of said fuel gas generating means by said steam, wherein after end of power generation by said fuel cell, said displacement gas is injected into said fuel gas flow channel for displacing said atmosphere of said fuel gas flow channel by said displacement gas, and the fuel gas generation by said fuel gas generating means is stopped, and said steam is injected into inside of said fuel gas generating means by said steam supply means thereby to displace said inside atmosphere of said fuel gas generating means by said steam.