Explosion Propagation Characteristics of Lignite in Horizontal Pipeline

被引：0
作者：
Gong J. [1 ]
Nie B. [1 ,2 ]
Fan Y. [1 ]
Zhang L. [1 ]
Ge Z. [1 ]
机构：
[1] School of Emergency Management and Safety Engineering, China University of Miningand Technology (Beijing), Beijing
[2] College of Safety Science and Engineering, Xinjiang Institute of Engineering, Urumqi
来源：
Binggong Xuebao/Acta Armamentarii | 2020年 / 41卷
关键词：
Coal dust explosion; Explosion characteristic; Explosion pressure; Flame propagation velocity; Lignite;
D O I：
10.3969/j.issn.1000-1093.2020.S2.021
中图分类号：
学科分类号：
摘要：
Coal searn explosion was experimentally studied to obtain the explosion characteristics of lignite in horizontal pipeline space. The explosion flame propagation characteristics of 5 kinds of lignite samples and pressure change in horizontal pipeline were studied, and the influence of equivalence ratio on the explosion characteristic was analyzed. The results show that the distributions of maximum explosion pressure and flame velocity at each measuring point are similar when the equivalence ratio values, φ, of coal samples are 2 and 1. The maximum explosion pressure changes of 5 lignite samples at each measuring point have experienced a short period of decrease and gradual rise until the explosion pressures reach the maximum at the fifth measuring point. The flame propagation velocity reaches maximum when it reaches the second measuring point, and then decreases continuously. The maximum explosion pressure and flame velocity at each measuring point for φ=2 are greater than those for φ=1. © 2020, Editorial Board of Acta Armamentarii. All right reserved.
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页码：156 / 161
页数：5
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