摘要
微波化学反应器反应腔体形式能影响微波场在腔体内的分布,不同的微波分布形式会影响微波腔体内的温度分布均匀性,这种温度差异性造成了微波能量的浪费,从而将影响微波化学反应器对污染物的去除效果.从微波腔体形式方面考察了微波场在腔体中的分布,建立了矩形、八面体和圆柱体3种微波反应器反应腔体模型,利用HFSS专业电磁模拟软件进行仿真计算,讨论了不同的微波反应腔体对微波分布均匀性的影响,结果显示相对于矩形微波腔体和八面体微波腔体,微波在圆柱形反应腔体内的分布呈现规律性分布,即驻波均匀的分布在负载水的周围,这种分布会使得负载水中的电场分布更加均匀,并且这种趋势从矩形到八面体再到圆柱体腔体越来越明显.结合圆柱体微波腔体在实际制作中的困难,所以选择八面体微波腔体作为最佳的微波反应腔体形式.根据模拟结果对实验室现有的微波反应器进行了优化,并应用于喹啉降解实验,结果显示改造后反应装置对H2O2分解速率加快,对喹啉去除率提高了5.27%,对TOC去除率提高了4.15%.
The form of microwave chemical reactor reaction chamber can affect the distribu- tion of microwave in the cavity, and different microwave distribution will affect the microwave distribution in the cavity uniformity. This temperature difference which will affect the micro- wave effect of chemical reactor on pollutant removal, were caused by the microwave energy waste. In this paper, three kinds of reaction models of rectangular reactor, octahedron and cylinder were established. Simulation experiments were carried out by HFSS professional e- lectromagnetic simulation software. The distribution of electric field in microwave cavity and load water was obtained by setting the sampling surface. The results showed that the distribu- tions of the microwave in the cylindrical reaction chamber were distributed regularly with re- spect to the rectangular reaction chamber and the octahedral reaction chamber, that was, the distribution of the standing wave was evenly distributed in the load of the microwave reaction chamber and this distribution will make the distribution of the electric field in the load water more uniform, and this trend from the rectangle to the octahedron to the cylinder cavity more and more obvious. Combined with the difficulty of the cylindrical reaction chamber in the ac-tual production, the octahedral reaction chamber was selected as the optimum microwave re- action chamber. The existing experimental microwave reactor was optimized according to the simulation results and applied to the quinoline degradation experiments. After the transforma- tion, the removal rate of quinoline was increased by 4.27%, and the removal rate of TOC was increased by 3.15% was obtained.
作者
王飞
尤宏
李志鹏
WANG Fei1 , YOU Hong1,2, LI Zhi-peng2(1. State Key Laboratory of Urban Water Resources and Water Environment, Harbin Institute of Technology, Harbin 150090, China;2. School of Marine Science and Technology, Harbin Institute of Technology, Weihai 264209, Chin)
出处
《哈尔滨商业大学学报（自然科学版）》
CAS
2018年第1期30-35,共6页
Journal of Harbin University of Commerce：Natural Sciences Edition
基金
哈尔滨工业大学城市水资源与水环境国家重点实验室2016年度导向类自主课题(No.2016DX12)
关键词
微波反应腔体
HFSS模拟仿真
喹啉去除
废水
去除率
microwave reaction cavity
HFSS simulation
removal of quinoline
wastewater
removal rate
