化工进展2024，Vol.43Issue(2)：593-601,9.DOI:10.16085/j.issn.1000-6613.2023-0954
基于超声的高浓度浆液两相流粒径在线测量
Online measurement of particle size of high concentration slurry two-phase flows based on ultrasound method
摘要
Abstract
In recent years,particle size measurement has been widely studied at home and abroad,and the online measurement of high concentration two-phase flow of slurry has become the focus of attention.In order to measure the particle size distribution of limestone slurry during flow,ultrasonic attenuation spectra of slurry with mass concentrations of 10%—40%at different moments were obtained by an ultrasonic online measuring device.A weighted non-negative least squares algorithm(ORT-WTLS)based on optimal regularization was used to calculate the slurry particle size distribution based on the predicted theoretical spectra of Harker&Temple and BLBL scattering models.The results showed that the relative deviations of the particle diameters calculated from the theoretical attenuation spectra and the 10dB noise-containing attenuation spectra of different particle sizes were less than 5%.The attenuation coefficients did not increase linearly with slurry concentration,indicating that the Harker&Temple and BLBL nonlinear models were suitable for the theoretical prediction of high concentration slurry systems.The ORT-WTLS algorithm was used to weight the measurement errors in the slurry experimental attenuation spectrum and calculate the particle size distribution,and the measurement results were basically consistent with the image method,and the dynamic measurement deviation was less than 7%.Therefore,combining the experimental ultrasonic attenuation spectrum,the nonlinear acoustic theoretical model of particle measurement,and the ORT-WTLS inversion algorithm can accurately calculate the particle size distribution of highly concentrated slurry.关键词
浆液/两相流/超声/粒径分布/测量Key words
slurry/two-phase flow/ultrasonic/particle size distribution/measurement分类
能源科技引用本文复制引用
张世玮,李玉宇,孟磊,宁翔,苏明旭..基于超声的高浓度浆液两相流粒径在线测量[J].化工进展,2024,43(2):593-601,9.基金项目
国家自然科学基金(52376162) （52376162）
大唐环境产业集团股份有限公司项目(CDTHT20210145029). （CDTHT20210145029）
