摘要
以某钢厂300 t RH真空精炼炉为原型,建立了相似比为1∶1的三维数值模型,研究RH气液两相流在不同壁面润湿条件下行为变化。通过采用多相流(Eulerian)模型进行气液两相流模拟,对不同的壁面润湿条件下的流体行为和流动特性进行分析。结果表明各种提升气体量下,壁面润湿角在60°时循环流量、气相体积分数和浸渍管内液相速度均最小;在0~180°以60°为拐点,循环流量、气相体积分数和浸渍管内液相速度先减小再增大;在120°~150°对气相的扩散和液相流动的促进作用最有效,对RH精炼进程的加快最适合。
Based on a 300 t RH vacuum refining furnace in a steel plant, a three-dimensional numerical model with similarity ratio of 1∶1 was established to study the behavior of RH gas-liquid two-phase flow under different wall wetting conditions. The multi-phase flow(Eulerian) model was used to simulate the gas-liquid two-phase flow, and the fluid behavior and fluid characteristics under different wall wetting conditions were analyzed. The results show that the circulating flow rate, gas volume fraction and liquid velocity in the impregnation tube are the minimum when the wall wetting angle is 60° regardless of the amount of lifting gas. When 60° is taken as the inflection point between 0° and 180°,the circulating flow rate, gas volume fraction and liquid velocity in the impregnation tube first decrease and then increase. The promotion of gas phase diffusion and liquid phase flow is the most effective when the wall wetting angle is between 120° and 150° for RH refining. It is most suitable to speed up the refining process.
作者
李怡宏
董超
朱宏伟
崔鑫
赵昱琨
LI Yihong;DONG Chao;ZHU Hongwei;CUI Xin;ZHAO Yukun(School of Materials Science and Engineering,Taiyuan University of Science and Technology,Taiyuan 030024,China)
出处
《炼钢》
CAS
北大核心
2021年第3期29-38,共10页
Steelmaking
基金
国家自然科学基金项目(51704203)
山西省重点研发计划高新项目(201903D121093)
山西省科技创新项目(2019L0616)。
关键词
RH精炼
润湿角
润湿特性
气液两相流
循环流量
RH refining
wetting angle
wetting characteristics
gas-liquid two-phase flow
circulating flow rate
