Simulation study of the susceptor assisted microwave high-temperature reactor heating based on fully coupled electromagnetic thermal fluid

化学工业与工程

Chemcial Industry and Engineering

2025, Vol. 42

Issue (2) :166-176 DOI: 10.13353/j.issn.1004.9533.20232037

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Simulation study of the susceptor assisted microwave high-temperature reactor heating based on fully coupled electromagnetic thermal fluid

WANG Xianfeng¹, SHANG Xiaobiao^1,2,3, WANG Wenbo¹, FAN Huili¹, ZHANG Qun¹, ZHOU Jiashen¹

1. Faculty of Mechanical and Electrical Engineering, Kunming University of Science and Technology, Kunming 650500, China;
2. Key Laboratory of Unconventional Metallurgy of Ministry of Education, Kunming 650093, China;
3. National Local Joint Laboratory of Engineering Application of Microwave Energy and Equipment Technology, Kunming 650093, China

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Abstract Microwave heating is widely used in the industrial field because of its high efficiency, fast and uniform characteristics. However, due to the selective heating characteristic, the coupling effect between microwave and weak microwave absorbing material is not obvious, which limits the application of microwave in industrial field. Therefore, the external susceptor (SiC) was introduced into the microwave reactor, and a finite element simulation model was established based on the electromagnetic-thermal-fluid coupling theory to explore the influence of different receptor configuration on the microwave heating of weak absorbing materials. The results show that the design of the external susceptors should not only consider the influence of the external susceptors on the electric field distribution of materials, but also consider the energy transfer between materials and susceptors, so as to achieve the optimal energy conversion balance between the susceptors assisted heating and the microwave volume heating material; When the susceptor is placed on both sides of the material and parallel to the waveguide side, the assisted heating effect is the best, the average temperature at 500 s is 918.86 ℃, and the COV_T is 0.133 6; In high-temperature microwave reactor, thermal radiation is the main heat transfer mode, and the higher the temperature, the more intense the heat transfer.

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	WANG Xianfeng
	SHANG Xiaobiao
	WANG Wenbo
	FAN Huili
	ZHANG Qun
	ZHOU Jiashen

Keywords： microwave reactor weak microwave absorbing materials susceptor heating efficiency numerical simulation

Received 2023-12-20;

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WANG Xianfeng, SHANG Xiaobiao, WANG Wenbo, FAN Huili, ZHANG Qun, ZHOU Jiashen.Simulation study of the susceptor assisted microwave high-temperature reactor heating based on fully coupled electromagnetic thermal fluid[J] Chemcial Industry and Engineering, 2025,V42(2): 166-176

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