数字显微全息在线测量脱硫烟气雾滴粒径及浓度  

On-line Measurement of Size and Concentration for Droplet Particles in Desulfurization Flue Gas by Digital Holographic Microscopy

作　　者：翁建明 金军 林志明 沈利 王志刚 吴迎春[2] 吴学成[2] 施鹏飞 WENG Jianming;JIN Jun;LIN Zhiming;SHEN Li;WANG Zhigang;WU Yingchun;WU Xuecheng;SHI Pengfei(Zhejiang Zheneng Jiahua Power Generation Co.,Ltd.,Jiaxing 314201,Zhejiang Province,China;State Key Laboratory of Clean Energy Utilization,Zhejiang University,Hangzhou 310027,China;Zhejiang Zheneng Electric Power Co.,Ltd.,Hangzhou 310007,China)

机构地区：[1]浙江浙能嘉华发电有限公司,浙江嘉兴314201 [2]浙江大学能源清洁利用国家重点实验室,杭州310027 [3]浙江浙能电力股份有限公司,杭州310007

出　　处：《动力工程学报》2021年第10期866-870,共5页Journal of Chinese Society of Power Engineering

基　　金：燃煤电厂湿烟气雾滴在线测量及烟气余热实时深度回收技术研发资助项目。

摘　　要：利用数字显微全息(DMH)测量技术开展了烟气雾滴浓度在线测量研究,设计搭建了基于超声雾化的雾滴发生系统和DMH测量系统,并利用DMH测量系统对超声雾化液滴场进行了测量。结果表明:DMH测量系统的测量误差约为4.5%,准确度较好;在10%、30%和50%的雾化量下,雾滴粒径的概率峰值所对应的粒径分别为2.49μm、2.58μm和2.56μm,三者基本一致;随着雾化量的增大,雾滴质量浓度的概率分布曲线逐渐呈正态分布。The on-line measurement of flue gas droplet concentration was carried out by using digital holographic microscopy(DMH) measurement technology. The droplet generation system and DMH measurement system based on ultrasonic atomization were designed and built, and the droplet field of ultrasonic atomization was measured by DMH measurement system. Results show that the measurement error of DMH measurement system is about 4.5%, which shows good accuracy. Under the atomization quantitiy of 10%, 30% and 50%, the droplet sizes corresponding to the probability peak are 2.49 μm, 2.58 μm and 2.56 μm respectively, which are basically the same. With the increase of atomization quantitiy, the probability distribution curve of droplet mass concentration gradually becomes normal distribution.

关 键 词：DMH测量技术 雾滴 在线测量 粒径 质量浓度 

分 类 号：TK314[动力工程及工程热物理—热能工程]