Characteristics of space-time variations of coal dust residues from explosion in a horizontal pipe

被引：0
|
作者：
Liu Z. [1 ,2 ]
Lin S. [1 ,2 ]
Zhao E. [1 ,2 ]
Zhang S. [1 ,2 ]
Guo R. [1 ,2 ]
机构：
[1] Key Laboratory of Coal Methane and Fire Control, Ministry of Education, China University of Mining and Technology, Xuzhou, 221116, Jiangsu
[2] School of Safety Engineering, China University of Mining and Technology, Xuzhou, 221116, Jiangsu
来源：
Baozha Yu Chongji/Explosion and Shock Waves | 2017年 / 37卷 / 02期
关键词：
Coal dust; Horizontal pipe; Residues analysis; Space-time characteristics;
D O I：
10.11883/1001-1455(2017)02-0237-06
中图分类号：
学科分类号：
摘要：
In the present work, to find out the differences in composition and the regularities in space-time distribution for coal dust residues, we carried out a coal dust explosion experiment using a horizontal pipe and analyzed the gas and solid residues of the coal dust. The results show that the content of ashes in the residues increased significantly while that of the volatile and fixed carbon decreased, with a smooth surface of the coal particle residue, accompanied by the particle cracking and bonding occurred. The study also reveals that the major components of the coal dust gas residue from explosion consist of O2, N2, CO, CO2, CH4, C2H4, C2H6, C2H2, C3H8, etc. At the source point of the explosion, the minimum concentration of oxygen was only 2.52% and that of carbon monoxide concentration was 0.38%~0.68%. The greater the distance from the explosive source point, the higher the concentration oxygen but the lower that of carbon oxide gas and hydrocarbon gas. © 2017, Editorial Board of EXPLOSION AND SHOCK WAVES. All right reserved.
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页码：237 / 242
页数：5
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