结合随机理论和透射光信号统计特性，提出了光脉动法，用于测量电厂煤粉颗粒粒度分布参数，并搭建了液固实验台进行了实验验证。结果表明：该方法可以有效、稳定地得到颗粒粒度分布参数；将该方法与小波重构技术结合起来处理电厂实测数据，可以有效地去除浓度变化和过采样的影响，得到有效的煤粉颗粒粒度和浓度信息。
Abstract
Based on random theory and statistical properties of transmission light, a light fluctuation method was proposed to measure the size distribution of pulverized coal in power plant, which was verified with a self-developed experimental setup. Results show that via the method, the parameters of size distribution could be effectively obtained. By combining with wavelet reconstruction technology, the method can be used to process actual data of a power plant, during which the influence caused by concentration fluctuation and oversample could be avoided, thus obtaining accurate information of size distribution and concentration of the pulverized coal.
关键词
煤粉 /
在线测量 /
光脉动法 /
粒度分布
{{custom_keyword}} /
Key words
pulverized coal /
online measurement /
light fluctuation method /
size distribution
{{custom_keyword}} /
{{custom_sec.title}}
{{custom_sec.title}}
{{custom_sec.content}}
参考文献
[1] YOON J, KIM M, LEE S, et al. Real-time light transmission spectroscopy (RTLTS):a real-time and in situ particle size distribution measurement for fractal-like diesel exhaust particles[J]. Journal of Aerosol Science, 2015, 90:124-135.
[2] LIANG Long, WANG Liguang, NGUYEN A V, et al. Heterocoagulation of alumina and quartz studied by zeta potential distribution and particle size distribution measurements[J]. Powder Technology, 2017, 309:1-12.
[3] SUN Xiaogang, TANG Hong, YUAN Gunbin. Determination of the particle size range in the visible spectrum from spectral extinction measurements[J]. Measurement Science and Technology, 2007, 18(11):3572-3582.
[4] 姜根山, 许伟龙, 安连锁. 声波在电站锅炉含颗粒介质气体中的衰减特性[J]. 动力工程学报, 2017, 37(2):126-133. JIANG Genshan, XU Weilong, AN Liansuo. Attenuation characteristics of acoustic waves in boiler flue gas containing solid particles[J]. Journal of Chinese Society of Power Engineering, 2017, 37(2):126-133.
[5] GREGORY J. Turbidity fluctuations in flowing suspensions[J]. Journal of Colloid and Interface Science, 1985, 105(2):357-371.
[6] ROSS S M. Introduction to probability models[M]. Pittsburgh,USA:Academic Press, 2011.
[7] 王乃宁, 蔡小舒, 郑刚, 等. 颗粒粒径的光学测量技术及应用[M]. 北京:原子能出版社, 2000.
[8] 祝东进, 郭大伟, 刘晓. 概率论与数理统计[M]. 北京:国防工业出版社, 2010.
[9] van de HULST H C. Light scattering by small particles[M]. London:Chapman and Hall, 1957.
[10] 高西全, 丁玉美. 数字信号处理[M]. 西安:西安电子科技大学出版社, 2008.
{{custom_fnGroup.title_cn}}
脚注
{{custom_fn.content}}
基金
国家自然科学基金资助项目（51327803，51576130）
{{custom_fund}}
PDF(1104 KB)
