物性参数对氢冶金流程能耗及碳排放的影响  

Influence of physical parameters on energy consumption and carbon emission of hydrogen metallurgy process

作　　者：张钰洁 岳强 柴锡翠[1] 王琦 Zhang Yiijie;Yue Qiang;Chai Xicui;Wang Qi(Northeastern University School of Metallurgy,Shenyang 110819,China;Northeastern University State Environmental Protection Key Laboratory of Eco-Industry,Shenyang 110819,China)

机构地区：[1]东北大学冶金学院,沈阳110819 [2]东北大学国家环境保护生态工业重点实验室,沈阳110819

出　　处：《材料与冶金学报》2022年第2期101-108,共8页Journal of Materials and Metallurgy

基　　金：国家重点研发计划(2019YFC1905204);国家自然科学基金(52170177);中央高校基本科研业务费(N182502045)

摘　　要：计算了在把H_(2)和CO混合气体作为还原气的氢冶金过程中还原出1t直接还原铁的需气量、碳排放量及还原气可回收率,分析它们受还原气温度及H_(2)体积分数的影响,同时分析了直接还原铁中铁质量分数对需气量的影响.计算结果表明:在H_(2)和CO混合还原气氛下,当还原气温度为1300℃,H_(2)体积分数为26%时,需气量最小,为826 m^(3)/t;当还原气仅为H_(2)或仅为CO时,纯H_(2)还原气需气量大于纯CO还原气需气量,随着还原气温度的升高,需气量差距缩小;直接还原铁中铁的质量分数越高,需气量越大,但其质量分数对需气量的影响较小;碳排放量随着还原气温度的升高和H_(2)体积分数的增加而降低;当还原气温度为1300℃,H_(2)体积分数为30%时,还原气可回收率最低,为41%.The gas demand,carbon emission and recoverability rate of reduced gas per one ton direct reduced iron output were calculated in the hydrogen metallurgy process with the mixture of H_(2) and CO as reducing gas.The influences of reduction temperature and H_(2) volume fraction on them were analyzed,and the influence of metal iron mass fraction in DRI on the gas demand was also analyzed.The calculation results show that the minimum gas demand is 826 m^(3)/t when the temperature is 1300℃and the volume fraction of H_(2) is 26%in the mixed reducing gas of H_(2) and CO.When the reducing gas is pure H_(2) or pure CO,the gas demand of pure H_(2) reducing gas is higher than that of pure CO reducing gas,and the gap of gas demand decreases with the increase of temperature.The higher the mass fraction of metal iron in the direct reduced iron is,the more the gas demand is,but the mass fraction has little effect on the gas demand.The carbon emission decreases with the increase of temperature and H_(2) volume fraction.The lowest recoverability rate of reducing gas will be reached(the value of 41%)when the temperature is 1300℃and the volume fraction of H_(2) is 30%.

关 键 词：直接还原铁 还原气需气量 氢冶金碳排放 还原气可回收率 

分 类 号：TF55[冶金工程—钢铁冶金]