基于电磁热流全耦合的感受器辅助高温微波反应器加热仿真研究

摘要微波加热因其高效、快速和均匀的特性而被广泛应用于工业领域。然而,其选择加热的特性使得微波与弱吸波材料耦合效果不明显,限制了微波在工业领域的应用拓展。因此在微波反应器中引入外部感受器(碳化硅),基于电磁-热-流耦合理论建立有限元仿真模型,探讨不同感受器配置对微波加热弱吸波材料效果的影响。结果表明:外部感受器的设计不仅要考虑其对物料电场分布的影响,还要考虑物料与感受器间的能量传递,使感受器辅助加热和微波体积加热物料的能量转化平衡达到最优;当感受器布置在物料两侧,并与波导侧面平行时辅助加热效果最好,在500 s时平均温度为918.86 ℃,COV_T为0.133 6;在高温微波反应器内,热辐射是主要的热传递方式,并且温度越高传热越剧烈。

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	王先锋
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	周家晟

关键词：微波反应器弱吸波材料感受器加热效率数值模拟

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.

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

Received 2023-12-20;

Fund:国家自然科学基金(51864030);云南省科技厅重点项目(202101AS070023)。

Corresponding Authors: 尚小标,副教授,shang21st@163.com。 Email: shang21st@163.com

About author: 王先锋(1997—),男,硕士研究生,现从事微波能应用方面的研究。

引用本文:

王先锋, 尚小标, 王文博, 范会丽, 张群, 周家晟.基于电磁热流全耦合的感受器辅助高温微波反应器加热仿真研究[J]. 化学工业与工程, 2025,42(2): 166-176

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, 2025,42(2): 166-176

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