氯化物熔盐电解槽电热场模拟分析  

Simulation Analysis of Electrothermal Field of Chloride Molten Salt Electrolyzer

作　　者：杨钰 冯泰熙 叶祥 路贵民[1] YANG Yu;FENG Taixi;YE Xiang;LU Guimin(National Engineering Research Center for Integrated Utilization of Salt Lake Resources,East China University of Science and Technology,Shanghai 200237,China)

机构地区：[1]华东理工大学盐湖资源综合利用国家工程研究中心,上海200237

出　　处：《有色金属（冶炼部分）》2023年第10期32-41,共10页Nonferrous Metals（Extractive Metallurgy)

基　　金：国家自然科学基金资助项目(U21A20323)。

摘　　要：氯化物熔盐电解槽在电解过程中受温度影响很大,有必要对电解槽中的电热场进行分析计算。利用COMSOL软件建立三维氯化物熔盐电解槽电热场模型,得到槽内电势和温度分布,分析电解槽的热平衡,在热平衡的基础上,计算电解槽结构参数对电热场的影响,并推导出放大方程。计算表明,缩短阴阳极间距,增大阴极高度、阴极半径、阳极半径及电解质液面高度可以在热平衡的条件下提高电流强度,依据无因次关系式可进行结构优化设计或电解槽放大设计而不需要复杂的建模,可以节省计算资源。In the electrolytic process of chloride molten salt electrolyzer,the temperature is greatly affected,so it is necessary to analyze and calculate the electric heating field in the electrolytic cell.COMSOL software was used to establish a three-dimensional electric heating field model of chloride molten salt electrolytic cell to obtain the potential and temperature distribution in the cell and analyze the heat balance of the electrolytic cell.Based on the heat balance,the influence of structural parameters of electrolytic cell on electric heating field was calculated,and the amplification equation was derived.The results show that shortening the distance between anode and cathode,increasing the height of cathode,radius of cathode,radius of anode and height of electrolyte surface can improve the current intensity under the condition of thermal balance.The optimization design of structure or the enlargement design of electrolytic cell can be carried out according to the dimensionless relation without complicated modeling,which can save computing resources.

关 键 词：氯化物熔盐 电解槽 数值模拟 

分 类 号：TF822[冶金工程—有色金属冶金]