设计了2个基于等离子体的高炉炼铁低碳再造流程。在CO₂捕集分离的基础上,分别回收高炉尾气中的CO₂和还原气,在等离子体的能量驱动下循环回高炉参与反应。使用Aspen Plus软件分别对2种再造高炉与传统高炉进行对照,得到其物料与能量流,并进一步通过灵敏度分析和 GFDA3 分析得到本工艺在工业上改进的方向。2种再造高炉工艺的实际 GFDA3 效率分别为82.7%、74.8%,优于传统高炉,并分别从能耗、碳排放和经济性3个方面与传统高炉进行对比,论证了再造流程的可行性。

Two low-carbon renovation processes based on plasma are designed for blast furnace ironmaking to reduce carbon dioxide emission.On the basis of CO₂ capture and separation,CO₂ and the reduction gases in the blast furnace tail gas are recycled respectively,and driven by the plasma back to the blast furnace to participate in the reduction reaction again.Aspen Plus software is utilized to simulate these two renovation processes and a traditional blast furnace model,respectively.The material flow and energy flow are obtained,and the industrial improvement direction for this task is further obtained through sensitivity analysis and exergy analysis.The actual exergy efficiencies of these two renovation blast furnace processes are 82.7% and 74.8%,respectively,which are better than those of the traditional blast furnace.Compared with the traditional blast furnace from three aspects of energy consumption,carbon dioxide emission and economy,the feasibility of these renovation processes are demonstrated.

王昊敏(1999-),男,硕士生;陈仙辉(1992-),男,博士,副研究员,研究方向为低温等离子体应用,通讯联系人,chenxian@ustc.edu.cn。