Microwave heating owns the advantages of selectivity,integrity and rapidity.It is of practical significance to strengthen the process of feed liquid treatment process based on energy source to supplement heat to realize evaporation concentration,separation and purification.In this paper,the evaporation characteristics,heat and mass transfer characteristics of liquid flash evaporation process and the research status of microwave heating liquid evaporation are reviewed.The microwave heating enhanced flash evaporation process is proposed.Firstly,it is pointed out that it is difficult to directly heat the feed liquid to provide heat and improve the evaporation rate in the flash evaporation process.The reason is that the traditional heat transfer method cannot transfer heat to the feed liquid in the flash evaporation process under vacuum conditions.Then the research status of microwave heating evaporation process is analyzed,the influencing factors in the process of microwave heating evaporation are summarized,and the application of microwave heating evaporation process is briefly described.Finally,a microwave heating enhanced flash evaporation process that can couple microwave heating with flash evaporation process is proposed,and the related progress in equipment design and application development is briefly described.The related problems faced by microwave heating enhanced flash evaporation are summarized and suggestions are put forward.It is expected to provide reference for the development direction of microwave heating enhanced evaporation process application and equipment design.
关键词
微波加热/蒸发/过程强化/能量转化/传热传质
Key words
microwave heating/evaporation/process intensification/energy conversion/heat and mass transfer
维普
万方数据