循环板安装参数对氯碱电解槽阳极室浓度分布的影响
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摘要
为优化设计氯碱工业离子膜电解槽,采用Fluent流体力学软件和自定义反应方程模型对电解槽阳极室内流体流动与传质情况进行了数值模拟,得到了浓度场分布。考察了循环板位置和安装角度对氯离子浓度方差的影响。结果表明:当循环板与离子膜的距离一定时,随着循环板竖直倾斜角度增大,氯离子浓度的方差值越大;当循环板竖直倾斜角度一定时,随着循环板与离子膜的距离增大,氯离子浓度的方差值先增大后减小。
In order to optimally design the ion-exchange membrane cell of chlor-alkali industry,the fluid flow and mass transfer characteristics in the anodic chamber were simulated by using fluid dynamic software Fluent and self-defined reaction model. The distribution of concentration was obtained. The effects of the position and installation angle of the circulating plate on the variances of chloride ion concentration were observed. The results show that,when the distance between the circulating plate and the ion-exchange membrane is constant,the variances of chloride ion concentration increase with the vertical angle of the circulating plate,and that when the vertical angle of circulating plate is given,the variances of chloride ion concentration increase with the distance between the circulating plate and the ion-exchange membrane to a peak and then start to decrease.
In order to optimally design the ion-exchange membrane cell of chlor-alkali industry,the fluid flow and mass transfer characteristics in the anodic chamber were simulated by using fluid dynamic software Fluent and self-defined reaction model. The distribution of concentration was obtained. The effects of the position and installation angle of the circulating plate on the variances of chloride ion concentration were observed. The results show that,when the distance between the circulating plate and the ion-exchange membrane is constant,the variances of chloride ion concentration increase with the vertical angle of the circulating plate,and that when the vertical angle of circulating plate is given,the variances of chloride ion concentration increase with the distance between the circulating plate and the ion-exchange membrane to a peak and then start to decrease.
引文
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[10] D Bergner. Membrane cells for chlor-alkali electrolysis[J]. J Appl Electrochem,1982,6:631-644.
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[2]祝增虎,李法强,彭正军.氯化锂电解条件对氯离子迁移的影响[J].盐湖研究,2014,22(3):50.
[3]王世荣,李娜,孙祥国.离子膜电解槽运行中出现的问题及采取措施[J].中国氯碱,2002(6):6-7.
[4]王奋斗.离子膜电解槽运行9年总结[J].氯碱工业,2015,51(6):22-24.
[5]卢卫华,冯旭光,迟淑玉.离子膜电解槽优化运行[J].氯碱工业,2012,48(12):17-19.
[6]高国光,武平丽.离子膜电解槽电压检测方案及其优化[J].自动化博览,2012:133-136.
[7]刘锦茂,周永卫,陈欣.低电流密度离子膜电解槽膜极距改造运行总结[J].氯碱工业,2013,49(6):23-25.
[8]刘晓营,唐必勇.高电流密度膜极距离子膜电解槽的应用[J].中国氯碱,2007(4):9-11.
[9] Y Xiong,L Jialing,S Hong. Bubble effects on ion-exchange membranes an electrochemical study[J]. J ApplElectrochem,1992,22:486-490.
[10] D Bergner. Membrane cells for chlor-alkali electrolysis[J]. J Appl Electrochem,1982,6:631-644.
[11]王淑军.计算流体力学软件FLUENT在旋流器流场模拟中的应用[J].煤炭加工与综合利用,2014(9).