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向热风炉燃用的高炉煤气中混入部分焦炉煤气,可以提高高炉冶炼用热风温度.根据理论计算,每增加138kJ/m~3焦炉煤气,可提高风温20℃;而风温每提高100℃,可降低焦比20kg/t铁,增加生铁产量3%.本文叙述了鞍钢炼铁厂全面推广应用煤气喷射器向高炉煤气中引射焦炉煤气的工艺概况、设备结构以及所取得的效果.
Mixing part of the coke oven gas into the blast furnace gas fired by the hot blast stove can increase the hot blast temperature for blast furnace smelting.According to the theoretical calculation, for every increase of 138 kJ / m ~ 3 coke oven gas, the air temperature can be increased by 20 ℃; 100 ℃, the coke ratio can be reduced by 20kg / t iron, and the output of pig iron can be increased by 3% .This paper describes the process overview, equipment structure and equipment obtained from comprehensive promotion and application of gas injectors to blast furnace gas in Anshan Iron and Steel Company effect.