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微波干燥:机遇和挑战

发表时间:2014-04-15  浏览量:1645  下载量:737
全部作者: 李占勇,KUDRATadeusz,王瑞芳
作者单位: 天津科技大学机械工程学院
摘 要: 对微波干燥面临的障碍与挑战进行综述,主要包括以下3个方面:1) 技术问题,如放电、阻抗失配、有限穿透深度、磁控管的寿命短、单一磁控管的低功率及功率分配不均匀等问题;2) 非技术问题,如热失控、受热温度不同、边角过热及冷冻干燥中融化等问题;3) 相关研究问题,如入射功率的测量、连续与间歇辐射、微波在组合技术中的应用以及规模化等问题。在指出成功应用微波加工存在障碍的同时,也提出了改进过程以克服这些困难并开辟新应用领域的机遇。
关 键 词: 化学分离工程;微波干燥;综述;加热均匀性;穿透深度;间歇辐射
Title: Microwave drying: opportunities and challenges
Author: LI Zhanyong, KUDRA Tadeusz, WANG Ruifang
Organization: College of Mechanical Engineering, Tianjin University of Science and Technology
Abstract: This paper reviews the major challenges and barriers in microwave drying mainly from three aspects: 1) Technical issues such as electric discharge, impedance mismatch, limited penetration depth, short life time of magnetrons, low power from a single magnetron, and non-uniform power distribution; 2) Non-technical issues exemplified by thermal runaway, differential heating, edge and corner overheating, melting in freeze drying; 3) Research-related issues such as determination of incident power, continuous vs. intermittent irradiation, targeted application of microwave in hybrid technologies, and scale-up. Barriers to the successful adoption of microwave processing are pointed out along with opportunities for improved process to overcome the obstacles and open new application areas.
Key words: chemical separation engineering; microwave drying; review; heating uniformity; penetration depth; intermittent irradiation
发表期数: 2014年4月第7期
引用格式: 李占勇,KUDRATadeusz,王瑞芳. 微波干燥:机遇和挑战[J]. 中国科技论文在线精品论文,2014,7(7):683-688.
 
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