| 摘要 |
PURPOSE:To adjust the combustion gas quantity to be heat-exchanged with a reforming catalyst and suppress the temperature rise of the copper reforming catalyst to the preset temperature or higher by providing a discharge pipe arranged with a carburetor at the downstream through the furnace body lower section of a methanol reformer and providing a flow control valve discharging part of the heat medium from a burner on this discharge pipe. CONSTITUTION:The valve opening of a flow control valve 25 is controlled so that the reforming catalyst of a reactor 10 becomes the optimum temperature during the steady operation of the methanol reformer 4 of a fuel cell power generating system. Part of the combustion gas from a burner 7 is discharged to the outside through a discharge pipe 24 without heating a carburetor 9 and the reactor 10 according to this controlled valve opening. The remaining combustion gas flows downward between a partition wall 16 and the discharge pipe 24 to heat the carburetor 9 and is U-turned by the partition wall 16 to heat the reactor 10 at a heater 8b and is discharged through an exhaust pipe 21. If the combustion gas quantity is increased at the start of the reformer 4 or during the unsteady operation such as when the load of the fuel cell is changed, the excessive combustion gas heating the carburetor 9 and the reactor 10 is discharged through the discharge pipe 24. |
