| 摘要 |
A hot blast furnace facility comprising: a hot blast furnace; a combustion air pipe that feeds combustion air to the hot blast furnace; a fuel gas pipe that feeds blast furnace gas discharged from a blast furnace, to the hot blast furnace as fuel gas for the hot blast furnace; a flue pipe that feeds the exhaust gas discharged from the hot blast furnace to a chimney; a first preheating means connected to the flue pipe and preheating either the combustion air or the fuel gas, by using heat recovered by heat exchange from the exhaust gas from the hot blast furnace; and a second preheating means having a first heater that combusts some of the blast furnace gas, said second preheating means preheating the other out of the combustion air and the fuel gas, by using the heat generated by the first heater. |
