PAN Hongli1 , JIN Wei1a, 2, DUAN Guangbin1 , LIU Zongming1
（1. a. School of Material Science and Engineering; b. Pipeline Pneumatic Conveying Engineering and Technology Research Center of Shandong Province, University of Jinan, Jinan 250022, China；2. Rizhao Entry-Exit Inspection and Quarantine Bureau, Rizhao 278600, China )
Abstract： In order to get the concentration of fly ash in the pipeline in pneumatic conveying, a test which adopting the dry fly ash as conveying materials and using compressed air as carrier gas, was carried out. A low-frequency ultrasonic tester was used to measure the ultrasonic attenuation in the pipeline during pneumatic conveying of fly ash. The results show that at the beginning of pneumatic conveying, the concentration of fly ash increases with the increase of superficial gas velocity, and then the concentration decreases because of the decrease of amount of fly ash in the storage bin.
Keywords: pneumatic conveying; fly ash; concentration of solide; ultrasonic test
中图分类号：TB52 文献标志码：A
文章编号：1008-5548（2014）05-0028-05
DOI:10.13732/j.issn.1008-5548.2014.05.007
收稿日期：2014-04-17， 修回日期：2014-05-26，在线出版时间：2014-10-11。
基金项目：山东省大型科学仪器设备升级改造技术研究项目， 编号：2011SJGZ20； 山东省科技发展计划项目，编 号：2013GGX10308；山 东省自然科学基金项目，编号：ZR2011EL040。
第一作者简介：潘洪利（1988—），男，硕士研究生，主要研究领域为气力输送。 E-mail:mse_panhl@163.com。
通信作者简介：刘宗明（1965—），男，博士，教授，博士生导师，主要研究领域为多相流技术与测试。 E-mail: ost_liuzm@ujn.edu.cn。
