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Chemcial Industry and Engineering 2023, Vol. 40 Issue (6) :96-106    DOI: 10.13353/j.issn.1004.9533.20220368
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Electromagnetic thermal characteristics in a continuous-flow microwave reactor coupled with multilayer flow elements
ZHU Yulian1, JIN Guangyuan1, ZHUANG Qin2, XU Ming2, ZHENG Qingyu1, SONG Feihu1, LI Jing1, SONG Chunfang1, LI Zhenfeng1
1. Jiangsu Key Laboratory of Advanced Food Manufacturing Equipment and Technology, Wuxi, Jiangsu 214122, China;
2. School of Mechanical Engineering, Jiangnan University, Wuxi, Jiangsu 214122, China

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Abstract 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.
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ZHU Yulian
JIN Guangyuan
ZHUANG Qin
XU Ming
ZHENG Qingyu
SONG Feihu
LI Jing
SONG Chunfang
LI Zhenfeng
Keywordsmicrowave continuous flow reactors   multilayer flow elements   electromagnetic heat   COMSOL   numerical simulation     
Received 2022-08-01;
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ZHU Yulian, JIN Guangyuan, ZHUANG Qin, XU Ming, ZHENG Qingyu, SONG Feihu, LI Jing, SONG Chunfang, LI Zhenfeng.Electromagnetic thermal characteristics in a continuous-flow microwave reactor coupled with multilayer flow elements[J]  Chemcial Industry and Engineering, 2023,V40(6): 96-106
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