| 摘要 |
<p>PURPOSE: A device for injecting gas fuel into a blast furnace is provided to enhance the combustion performance of dust coal and to save reduction cost by suitably controlling the combustion temperature of each wind blower by controlling the amount of each of the dust coal and gas fuel. CONSTITUTION: A device for injecting gas fuel into a blast furnace comprises a dust coal injecting unit(10) and a fuel gas injecting unit(50). The dust coal injecting unit comprises dust coal injecting lances(12,14) and a dust coal distributing unit(20). The dust coal injecting lance injects dust coal through the wind hole of the blast furnace. The dust coal injecting lance supplies the dust coal to the dust coal injecting lance. The gas fuel injecting unit comprises fuel gas injecting lances(52,54) and a supply unit. The gas fuel injecting unit injects gas fuel through the wind hole. The supply unit supplies gas fuel to the gas fuel injecting lance. The dust coal injecting unit is alternately connected to the dust coal injecting lances, which are installed on the wind hole of the blast furnace.</p> |
