Online Sizing of Pneumatically Conveyed Particles by Acoustic Emission Method

被引：0

作者：

Hu, Yonghui ^{[1
]}

Qian, Xiangchen ^{[1
]}

Huang, Xiaobin ^{[1
]}

Gao, Lingjun ^{[2
]}

Yan, Yong ^{[1
,2
]}

机构：

[1] North China Elect Power Univ, Sch Control & Comp Engn, Beijing 102206, Peoples R China

[2] Univ Kent, Sch Engn & Digital Arts, Canterbury CT2 7NT, Kent, England

来源：

8TH INTERNATIONAL SYMPOSIUM ON MEASUREMENT TECHNIQUES FOR MULTIPHASE FLOWS | 2014年 / 1592卷

基金：

英国工程与自然科学研究理事会;

关键词：

Particle size; particle sizing; acoustic emission; Hertz theory of contact; particle flow; POWDERS; SIZE;

D O I：

10.1063/1.4872115

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

Accurate determination of particle size distribution is critical to achieving optimal combustion efficiency and minimum pollutant emissions in both biomass and biomass/coal fired power plants. This paper presents an instrumentation system for online continuous measurement of particle size distribution based on acoustic emission (AE) method. Impulsive AE signals arising from impacts of particles with a metallic waveguide protruding into the flow carry information about the particle size. With detailed information about the generation, propagation and detection of impact AE signals, the particle size can be quantitatively characterized. Experimental results obtained with glass beads demonstrate the capability of the system to discriminate particles of different sizes from the recorded AE signals. The system has several appealing features such as online measurement, high sensitivity, simple structure, minimum invasiveness and low cost, which make it well suited for industrial applications.

引用

页码：277 / 282

页数：6

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