| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide hot stove equipment which can reduce addition amount of other fuel to blast furnace gas.SOLUTION: Hot stove equipment 1A comprises: a hot stove 2; a combustion air pipe 3 sending combustion air to the hot stove 2; a fuel gas pipe 4 sending blast furnace gas discharged from a blast furnace to the hot stove 2 as fuel gas of the hot stove 2; a flue tube 5 sending waste gas discharged from the hot stove 2 to a funnel 9; first preheating means 6A connected to the flue tube 5 and preheating one of the combustion air and the fuel gas with the heat collected from the waste gas of the hot stove 2 by heat exchange; and second preheating means 7A which has a first heating machine 72 combusting a part of the blast furnace gas and which preheats one of the combustion air and the fuel gas with the heat generated in the first heating machine 72.</p> |
