核电站含硼废液微波固化系统微波场热场仿真研究  

Microwave and Thermal Field Simulation of Microwave Curing System for Boron-Containing Waste Liquid in Nuclear Power Plant

作　　者：臧义坤 侯溪 熊扣红 马兴均 ZANG Yi-kun;HOU Xi;XIONG Kou-hong;MA Xing-jun(Nuclear Power Operations Research(Shanghai)Co.Ltd.,Shanghai 200126,China;Sichuan Guli Iron Environmental Protection Engineering Co.Ltd.,Chengdu 610023,China)

机构地区：[1]核电运行研究(上海)有限公司,上海200126 [2]四川固力铁环保工程有限责任公司,四川成都610023

出　　处：《真空电子技术》2023年第4期70-74,共5页Vacuum Electronics

摘　　要：微波固化技术可以实现对放射性废液的浓缩固化减容,但目前缺乏含硼废液微波固化多物理场仿真分析。针对此本文进行了核电站含硼废液微波固化系统微波场热场仿真研究,有助于微波固化装置设计和微波固化工艺优化。通过介电测量获得了不同含水量的硼酸/氢氧化钠水溶液的介电常数;基于有限元法建立了2.45 GHz微波固化模型,实现了微波加热硼酸/氢氧化钠水溶液计算;分析了微波频率、含硼废液含水量、液面高度对电场分布和温度场分布的影响。该研究成果为微波含硼废液固化装备设计提供指导。Microwave solidification technology can realize the concentration,solidification and volume reduction of radioactive waste liquid,but there is a lack of multi-physics field simulation analysis of microwave solidification of boron-containing waste liquid.A simulation study on the microwave and thermal field of the boron-containing waste liquid microwave solidification system in nuclear power plants is conducted,which is helpful for the design of microwave solidification equipment and the optimization of microwave solidification process.The dielectric constants of boric acid/sodium hydroxide aqueous solutions with different water contents are obtained by dielectric measurement.A 2.45 GHz microwave curing model is established based on the finite element method,and the microwave heating boric acid/sodium hydroxide aqueous solution is calculated.The effects of microwave frequency,water content of boron-containing waste liquid and liquid level height on the distribution of electric field and temperature field are analyzed.The research achievement provides a guidance for the design of microwave boron-containing waste liquid solidification equipment.

关 键 词：微波加热 含硼废液固化 多物理场仿真 

分 类 号：TL941[核科学技术—辐射防护及环境保护]