基于Euler-Euler方法的VD炉脱气过程数值模拟  

Numerical Simulation of the Degassing Process in the Vacuum Tank based on the Euler-Euler Method

作　　者：余珊 张慧书[1,2] 孙野 陈韧[1,2] YU Shan;ZHANG Huishu;SUN Ye;CHEN Ren(School of Metallurgy and Materials Engineering,Liaoning Institute of Science and Technology,Benxi Liaoning 117004,China;Liaoning Key Laboratory of Optimization and Utilization of Non-associatedLow-grade Iron Ore,Benxi Liaoning 117004,China)

机构地区：[1]辽宁科技学院冶金与材料工程学院,辽宁本溪117004 [2]辽宁省低品位非伴生铁矿优化应用重点实验室,辽宁本溪117004

出　　处：《辽宁科技学院学报》2023年第5期5-8,共4页Journal of Liaoning Institute of Science and Technology

基　　金：辽宁省自然科学基金面上项目(2023-MS-291);辽宁省教育厅高等学校创新人才支持计划(LR2020066).

摘　　要：真空脱气是冶炼高品质钢水的关键手段。文章基于Euler-Euler方法,建立了可用于描述真空条件下反应器内气液流动和传质行为的通用计算流体力学(CFD)模型。然后,将所建立CFD模型用于某钢厂在产VD精炼炉,具体研究了不同底吹氩气流量条件下熔池中的流场分布和羽流区形貌,以及钢水中[H]和[N]浓度随真空操作时间的变化规律。比较总计9炉次钢水中[N]终点浓度的预测值和测量值,发现本研究模型具有较高精度,因而可用于进行VD精炼过程的相关应用基础研究。Vacuum degassing is a key process for production of high-quality liquid steel.Based on the Euler-Euler method,a genetic computational fluid dynamics(CFD)model,which can be used to describe the behaviors of gas-liquid two-phase flow and mass transfer in the reactor under vacuum conditions,was built in the present paper.Then,the CFD model was applied to an industrial vacuum degasser to particularly investigate the flow field and plume profile under different argon flow rates.Variations of hydrogen and nitrogen contents in liquid steel along vacuum treatment period were also studied.Model predictions and practical measurements of finally nitrogen content in totally 9 heats were compared and the results showed that the current model has a high accuracy and thus can be used to carry out related applied fundamental research work in the field of vacuum degassing of liquid steel.

关 键 词：真空脱气 底吹钢包脱氢 脱氮 计算流体力学 

分 类 号：TF704.6[冶金工程—钢铁冶金]