水分对废纸张微波加热特性影响模拟研究  

Simulation Study on Effect of Moisture on Microwave Heating Properties of Paper

作　　者：林雪彬[1] 李梦佳 LIN Xuebin;LI Mengjia(College of Marine Equipment and Mechanical Engineering of Jimei University,Fujian Xiamen 361021,China)

机构地区：[1]集美大学海洋装备与机械工程学院,福建厦门361021

出　　处：《广州化工》2024年第19期109-114,共6页GuangZhou Chemical Industry

基　　金：福建省自然科学基金(2020J05141);福建省教育厅科技类资助项目(JAT190312);集美大学科研启动金(ZQ2019004)。

摘　　要：水分对微波加热过程有重要影响,采用COMSOL Multiphysics软件对不同水分下纸张的升温、温度分布、能耗等微波加热特性进行模拟研究。研究结果表明:纸张含水率5%时,其加热效果最佳,高含水率下纸张温度分布更加均匀。较高的微波功率可以减少能耗,微波功率从0.5 kW增加到2 kW,不同含水率纸张温升提高30%~32%。此外,纸张厚度和含水率对纸张的微波加热具有耦合作用:10%含水率时,纸张吸收热量随厚度增加。40%含水率时,厚度3 mm时吸热量最佳。纸张厚度越大温度分布越均匀。The application of microwave heating for thermal conversion of combustible waste has received wide attention,in which the moisture has an important influence on the microwave heating process.COMSOL Multiphysics software was used to simulate the heating,temperature distribution,energy consumption and other microwave heating characteristics of paper under different moisture.The results showed that when the moisture content of the paper was 5%,the heating effect was optimal.Temperature distribution of high moisture content paper was more uniform.Higher microwave power could reduce energy consumption,microwave power increased from 0.5 kW to 2 kW,temperature rise of paper with different moisture content increased by 30%~32%.In addition,thickness and moisture content had a coupling effect on paper microwave heating:with 10%moisture content,the absorbed heat of paper increased with the thickness,with 40%moisture content,the thickness of 3 mm was best for heat absorption.The greater the thickness of the paper,the more uniform temperature distribution.

关 键 词：微波 加热 COMSOL Multiphysics 水分 纸张 

分 类 号：TB35[一般工业技术—材料科学与工程]