YANG Shi，LIU Zhenyu，WANG Yongying，ZHANG Xin，CHENG Xiaolei

(China Coal Research Institute Company of Energy Conservation Co. Ltd., State Key Laboratory of Coal Mining and Clean Utilization, National Energy Technology & Equipment Laboratory of Coal Utilization and Emission Control, Beijing 100013,China)

Abstract: Using pressure drop measurement and electrical capacitance tomography (ECT) methods, the flow pattern, pressure drop and pressure fluctuation characteristics of syphon and Venturi pipes were investigated. By effective pressure drop signal of Venturi pipe,statistical evaluation index was constructed to evaluate the powder flow stability. The results show that, pressure drop signals of Venturi is appropriate to evaluate the powder flow stability in different operation conditions.

Keywords: dilute phase pneumatic conveying; syphon; Venturi; gas solid flow characteristics

中图分类号：TB44

文献标志码：A

文章编号：1008-5548(2019)01-0040-06

DOI:10.13732/j.issn.1008-5548.2019.01.007

收稿日期： 2018-08-06，修回日期：2018-08-25，在线出版时间：2018-12-24 08:37。

基金项目：煤炭科学技术研究院科技发展基金项目，编号：2016CX02; 2018JC01。

第一作者简介：杨石(1981—)，男，博士，研究方向为粉体流动。E-mail：the_rock_0@163.com。