熔融还原煤气改质的数值模拟  

Numerical Simulation of Gas Reforming During Smelting Reduction

作　　者：高攀[1] 李强[1] 邹宗树[1] 

机构地区：[1]东北大学材料与冶金学院,辽宁沈阳110819

出　　处：《东北大学学报（自然科学版）》2011年第5期683-686,共4页Journal of Northeastern University(Natural Science)

基　　金：国家自然科学基金资助项目(50774019)

摘　　要：考虑到两步法熔融还原中煤气的显热没有得到充分的利用,对煤气改质进行数值模拟研究.研究结果表明,相同的气体温度和气体流量下,碳消耗量随着填充床的高度增加(或碳基粒度的减少)而增加,水蒸气消耗量随着填充床高度的增加(或碳基粒度的减少)而减少;COREX终还原炉发生煤气改质后氧化度由0.10降至0.065,HIsmelt熔融还原炉炉顶煤气氧化度由0.625降至0.223,煤气的显热得到充分利用.Given the incomplete utilization of enthalpy heat in a two-step smelting reduction process,gas reforming was studied by using numerical simulation.Under fixed gas temperature and flux,carbon consumption increased with increasing of carbon-based packed bed height and decreasing carbon particle size,while water vapor consumption decreased with carbon-based packed bed height and decreasing carbon particle size;extent of oxidation of gas in the COREX decreased from 0.10 to 0.065,while oxidation of gas in the HIsmelt decreased from 0.625 to 0.223,and the heat was fully utilized.

关 键 词：熔融还原 煤气改质 碳基填充床 数值模拟 

分 类 号：TF557[冶金工程—钢铁冶金]