摘要
微波加热因其独特的体积加热在连续流系统中应用广泛,但其存在的明显缺点是温度不均匀导致局部热失控影响物料的加热效果。因此,通过多物理场耦合计算讨论物料体积、物料间距、波导位置、微波功率和物料流速对物料微波能量利用率和加热效果的影响。结果表明:微波连续流反应器内放置2层物料具有最优的微波能量利用率和加热效率;物料间距和波导位置的变化使得反应器腔内双层物料的微波能量利用率和加热效果出现非同步的差异;增加微波功率会增大反应器内双层物料加热效果的差异性,而增加物料流速则会改善这种差异。
Microwave heating is widely used in continuous flow systems because of its unique volume heating,but its obvious disadvantage is that the uneven temperature leads to local thermal runaway and affects the heating efficiency of materials.Therefore,the effects of material volume,material spacing,waveguide position,microwave power and material flow rate on utilization of microwave energy and heating efficiency are discussed through multiphysics coupling calculation.The results show that placing two layers of materials in the microwave continuous flow reactor has the best utilization of microwave energy and heating efficiency;the change of material spacing and waveguide position makes asynchronous difference of the microwave energy utilization and heating effect of the two-layer materials in the reactor;increasing the microwave power increases the difference in the heating effect of the double-layer material in the reactor,while increasing the material flow rate improves this difference.
作者
祝玉莲
金光远
庄芹
徐明
郑庆雨
宋飞虎
李静
宋春芳
李臻峰
ZHU Yulian;JIN Guangyuan;ZHUANG Qin;XU Ming;ZHENG Qingyu;SONG Feihu;LI Jing;SONG Chunfang;LI Zhenfeng(Jiangsu Key Laboratory of Advanced Food Manufacturing Equipment and Technology,Wuxi,Jiangsu 214122,China;School of Mechanical Engineering,Jiangnan University,Wuxi,Jiangsu 214122,China)
出处
《化学工业与工程》
CAS
CSCD
北大核心
2023年第6期96-106,共11页
Chemical Industry and Engineering
基金
国家自然科学基金(21606109)。
关键词
微波连续流反应器
多层流动元件
电磁热
COMSOL
数值模拟
microwave continuous flow reactors
multilayer flow elements
electromagnetic heat
COMSOL
numerical simulation
