原子能科学技术2024，Vol.58Issue(1)：181-188,8.DOI:10.7538/yzk.2022.youxian.0862
径向流氦氢分离床穿透特性实验与模拟分析
Experimental and Simulation Analysis of Breakthrough Capacity of Radial Flow Helium-hydrogen Separation Bed
丁卫东 1占勤 1杨洪广 1连旭东1
作者信息
- 1. 中国原子能科学研究院反应堆工程技术研究所,北京 102413
- 折叠
摘要
Abstract
Helium-hydrogen separation bed is an important part of tritium extraction system.In order to deeply study penetration performance of the radial flow bed and guide the structure design,the mathematical model of radial bed breakthrough capacity was established by coupling material hydrogen absorption kinetics equation,mass trans-fer equation and fluid flow momentum equation in COMSOL Multiphysics,which was used to carry out parametric scanning of the characteristic parameters,and the effect of the model on the breakthrough capacity was analyzed.The results show that the break-through experiment results are in good agreement with the simulated data,and the model is reliable.The effect of temperature,height-diameter ratio and porosity on the breakthrough capacity was analyzed.The adsorption temperature of the bed is from room temperature to 343 K.In this temperature range,increasing the temperature has less effect on the length of the mass transfer zone and the concentration-time curve at the outlet.With the increase of the height-diameter ratio,the efficiency of the bed decreases significantly,in which the high efficiency is maintained for a longer period of time when the hieght-diameter ratio is 2.00-8.33.With the increase of porosity,the adsorption efficiency of the bed decreases significantly.Considering the adsorption efficiency,the flow resistance and the difficulty of powder loading,the powder porosity is recommended from 0.56 to 0.64.Therefore,the model established in this study can better predict the adsorption performance,and can be used to optimize the structure design basis and process parameters.关键词
径向流/氦氢分离床/穿透特性/数值模拟Key words
radial flow/helium-hydrogen separation bed/breakthrough capacity/numerical simulation分类
能源科技引用本文复制引用
丁卫东,占勤,杨洪广,连旭东..径向流氦氢分离床穿透特性实验与模拟分析[J].原子能科学技术,2024,58(1):181-188,8.
