期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2019
卷号：252
期号：5
页码：1-8
DOI：10.1088/1755-1315/252/5/052153
出版社：IOP Publishing
摘要：The ultrasonic method generally calculates the acoustic attenuation coefficient of gas-solid two-phase flow based on gas single-phase flow at a certain velocity to get the concentration of solid phase. The changes of gas phase velocity have effects on acoustic attenuation coefficient and the measurement results of solid phase concentration. The paper analysed the principle of this effects, built experimental platform, and a modified formula of gas phase velocity based on the experimental samples was given. The experiment test results indicated that the measurement absolute error of the pulverized-coal concentration was reduced to about 0.7%.
