Study on Cooperative Optimization of Large Coal Injection and Oxygen Enrichment Rate in Blast Furnace Ironmaking Process
The effect of reasonable combination of coal injection and oxygen enrichment rate on blast furnace performance was studied.The parameters and performance under different operating conditions are analyzed through the preliminary ex-periment setting.In the implementation of reasonable collocation,the coal injection system and oxygen supply system are precisely controlled,and the key parameters such as temperature distribution,combustion efficiency,reduction reaction rate,CO and CO2 emissions and iron production of the blast furnace are continuously monitored.The comparison results show that moderate coal injection amount and oxygen enrichment rate,shows the best performance.Under this condition,the temperature distribution in the blast furnace is more uniform,the combustion efficiency is higher,the reduction reaction rate is faster,the emission of CO and CO2 is reduced,and the iron production is significantly increased.