高炉喷吹煤气的煤造气富氢试验  

Experimental Study on Hydrogen-rich Coal Gasification of Gas-injection BF Process

作　　者：崔坤坤 李福民 吕庆 卢建光[2,3] Cui Kunkun;Li Fumin;Lv Qing;Lu Jianguang(College of Metallurgy andEengineering,North China University of Science and Engineering and Technology,Tangshan,Hebei,China;College of Metallurgy,Northeastern University,Shenyang,Liaoning,China;Hebei Iron and Steel Group Co.,Handan,Hebei,China)

机构地区：[1]华北理工大学冶金与能源学院,河北唐山063009 [2]东北大学冶金学院,辽宁沈阳110004 [3]河北钢铁集团邯郸公司,河北邯郸056015

出　　处：《矿产综合利用》2019年第6期136-139,共4页Multipurpose Utilization of Mineral Resources

基　　金：国家自然科学基金项目(面上项目,重点项目,重大项目)

摘　　要：为克服高炉喷煤系统带来的一系列负面影响,使高炉生产更加顺行和降低能耗,提出了高炉喷煤新工艺,即以富氢煤气代替煤粉从风口喷入高炉,从而更高效节能的炼铁生产。主要研究不同气化剂对产出煤气成分的影响,为造气炉实际生产提供参考依据。试验采用高温炉对煤样进行分阶段试验,改变气化剂的配比,收集气体并用红外线气体分析仪检测煤气成分。结果表明:当气化剂为空气时,煤气中的CO和H2浓度都比较低;气化剂中加5%的H2O和CO2后,煤气中还原气体(CO+H2)的浓度几乎达到最高,煤气中H2浓度达到最大,继续提高气化剂中CO2浓度,煤气中CO浓度会继续升高,煤气中H2浓度会逐渐降低;提高气化剂中H2O的含量后,煤气中的CO和H2浓度都有所提高;提高气化剂中的O2含量到90%,且N2含量降到0%,煤气中CO浓度会持续升高,CO2浓度也有所提高,但是煤气中H2浓度会逐渐下降。In order to overcome a series of negative impacts brought by coal injection in blast furnace,and to make blast furnace production more efficient,energy-saving and environmentally friendly,we have proposed a new process for the injection of coal from blast furnaces to produce hydrogen-enriched gas form the gas generator and then injected it into the blast furnace from the tuyere,instead of blast furnace coal injection.this paper mainly studies the influence of gasification agent selection of gasification furnace on gas composition,and find out the influence rule,and provide reference for actual production.the results show that when air is used as a gasification agent,the concentrations of CO and H2 in the gas are at a relatively low level;On this basis,when adding more 5% of H2O and CO2 to the gasification agent,the concentration of the reducing gas(CO+H2) in the coal gas reaches almost the highest value,At this time,the concentration of H2 in the gas reaches the maximum,and when the concentration of CO2 in the gasifying agent is further increased,the concentration of CO in the gas is increased,but the concentration of H2 in the gas will gradually decrease;After increasing the content of H2O in the gasification agent,the concentrations of CO and H2 in the gas will increase;Increasing the O2 content in the gasification agent to 90%,decreasing the N2 concentration to 0%,And then the CO and CO2 concentration in the coal gas will increasing,but the H2 concentration in the gas will gradually decreasing.

关 键 词：高炉喷吹 煤造气 气化剂 煤气成分 还原性气体 

分 类 号：TD952[矿业工程—选矿]