| 摘要 |
PROBLEM TO BE SOLVED: To rapidly enhance generating efficiency and operating efficiency, operability, etc., of a fuel cell, by effectively utilizing unreacted hydrogen discharged from a fuel cell main unit. SOLUTION: A fuel cell generating system 1 is provided with a fuel cell main unit 2 having a fuel electrode 2a and an air electrode 2b and a reforming means (120 reformer, 13: carbon monoxide transformer) producing reformed gas by reforming fuel gas 10, in this system, the following improving means is adopted: in a combustor 23, unreacted reformed gas discharged from the fuel electrode 2a, without reaction with air, is burned by air 21 to generate energy. This energy is utilized, a turbine main unit 20 is operated, generation is performed by a generator 22. Combustion gas, generated according to driving of the turbine main unit 20 to decrease a temperature, is fed to the reformer 12 through a discharge gas line 28, to be utilized as a reforming heat source for city gas. |
