耦合多层流动元件的连续流微波反应器内电磁热特性

文章导读

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。

	Service

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	Email Alert
	RSS
	作者相关文章
	祝玉莲
	金光远
	庄芹
	徐明
	郑庆雨
	宋飞虎
	李静
	宋春芳
	李臻峰

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

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.

Keywords： microwave continuous flow reactors multilayer flow elements electromagnetic heat COMSOL numerical simulation

Received 2022-08-01;

Fund:国家自然科学基金(21606109)。

Corresponding Authors: 金光远,副教授,E-mail:gyuanjin@Jiangnan.edu.cn。 Email: gyuanjin@Jiangnan.edu.cn

About author: 祝玉莲(1999-),女,硕士研究生,现从事微波连续流反应器方面的研究。

引用本文:

祝玉莲, 金光远, 庄芹, 徐明, 郑庆雨, 宋飞虎, 李静, 宋春芳, 李臻峰.耦合多层流动元件的连续流微波反应器内电磁热特性[J]. 化学工业与工程, 2023,40(6): 96-106

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, 2023,40(6): 96-106

[1] 吴雁泽, 金光远, 邹鹏程, 等. 基于响应面法对一种连续型矩形微波反应器加热效果的模拟优化[J]. 化学工业与工程, 2021, 38(4): 84-94 WU Yanze, JIN Guangyuan, ZOU Pengcheng, et al. Simulation and optimization of heating effect of a continuous rectangular microwave reactor by response surface method[J]. Chemical Industry and Engineering, 2021, 38(4): 84-94(in Chinese)
[2] 侯影飞, 游海鹏, 齐升东, 等. 微波反应器加热效率及均匀性仿真优化[J]. 化学工程, 2018, 46(6): 21-25 HOU Yingfei, YOU Haipeng, QI Shengdong, et al. Simulation and optimization of heating efficiency and uniformity on microwave reactor[J]. Chemical Engineering, 2018, 46(6): 21-25(in Chinese)
[3] KANT B S, KANT B R, JEON J M, et al. An overview on advancements in biobased transesterification methods for biodiesel production: Oil resources, extraction, biocatalysts, and process intensification technologies[J]. Fuel, 2021, 285: 119117
[4] YE J, XIA Y, YI Q, et al. Multiphysics modeling of microwave heating of solid samples in rotary lifting motion in a rectangular multi-mode cavity[J]. Innovative Food Science & Emerging Technologies, 2021, 73: 102767
[5] 王楠楠, 郑彤, 姜继平, 等. 一种应用于有机废水处理的微波强化管式系统: 基于COMSOL Multiphysics的初步设计、优化与验证[J]. 节能, 2020, 39(8): 98-102 WANG Nannan, ZHENG Tong, JIANG Jiping, et al. A microwave enhanced tubular system for organic wastewater treatment—Preliminary design, optimization and verification based on COMSOL Multiphysics[J]. Energy Conservation, 2020, 39(8): 98-102(in Chinese)
[6] ZHU H, HE J, HONG T, et al. A rotary radiation structure for microwave heating uniformity improvement[J]. Applied Thermal Engineering, 2018, 141: 648-658
[7] NIU X, LUO S, FAN L, et al. Numerical simulation on the flow and heat transfer characteristics in the one-side heating helically coiled tubes[J]. Applied Thermal Engineering, 2016, 106: 579-587
[8] TUTA S, PALAZOǦLU T K. Finite element modeling of continuous-flow microwave heating of fluid foods and experimental validation[J]. Journal of Food Engineering, 2017, 192: 79-92
[9] ZHANG Y, YANG H, YAN B, et al. Continuous flow microwave system with helical tubes for liquid food heating[J]. Journal of Food Engineering, 2021, 294: 110409
[10] 郭帅, 朱铧丞, 黄卡玛. 一种新型连续流生物柴油微波反应器仿真与设计[J]. 太赫兹科学与电子信息学报, 2020, 18(4): 656-659 GUO Shuai, ZHU Huacheng, HUANG Kama. Simulation and design of a new continuous flow biodiesel microwave reactor[J]. Journal of Terahertz Science and Electronic Information Technology, 2020, 18(4): 656-659(in Chinese)
[11] DEWANGAN S, KUMAR D. Numerical modeling of fluid flow and heat transfer through helical tube[J]. International Journal of Heat and Technology, 2020, 38(2): 541-552
[12] WU Y, HONG T, TANG Z, et al. Dynamic model for a uniform microwave-assisted continuous flow process of ethyl acetate production[J]. Entropy, 2018, 20(4): 241
[13] 吴雁泽. 一种连续流微波反应器的设计与优化[D]. 江苏无锡: 江南大学, 2021 WU Yanze. Design and optimization of a continuous flow microwave reactor[D]. Jiangsu Wuxi: Jiangnan University, 2021(in Chinese)
[14] YANG H, YAN B, MENG L, et al. Mathematical modeling of continuous microwave heating of surimi paste[J]. Journal of Food Engineering, 2022, 315: 110797
[15] LI M, WU X, HAN D, et al. A high-efficiency single-mode traveling wave reactor for continuous flow processing[J]. Processes, 2022, 10(7): 1261
[16] ZHOU J, WANG Y, YANG X. Shape optimization of microwave cavity using arbitrary Lagrangian-Euler method to improve the heating uniformity[J]. IEEE Transactions on Microwave Theory and Techniques, 2022, 70(3): 1932-1942
[17] TOPCAM H, ERDOGDU F. Designing system cavity geometry and optimizing process variables for continuous flow microwave processing[J]. Food and Bioproducts Processing, 2021, 127: 295-308
[18] SOTO-REYES N, TEMIS-PÉREZ A L, LÓPEZ-MALO A, et al. Effects of shape and size of agar gels on heating uniformity during pulsed microwave treatment[J]. Journal of Food Science, 2015, 80(5): E1021-E1025
[19] 邹鹏程, 金光远, 崔政伟, 等. 一种具有搅拌桨的微波夹层反应釜内多物理场特性研究[J]. 化学工业与工程, 2022, 39(3): 98-106 ZOU Pengcheng, JIN Guangyuan, CUI Zhengwei, et al. Study of multi-physical field characteristics in a microwave reactor with an interlayer and a stirring blade[J]. Chemical Industry and Engineering, 2022, 39(3): 98-106(in Chinese)
[20] TANGY A, PULIDINDI I N, PERKAS N, et al. Continuous flow through a microwave oven for the large-scale production of biodiesel from waste cooking oil[J]. Bioresource Technology, 2017, 224: 333-341