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

Liu Zhentang; Lin Song; Zhao Enlai; Zhang Songshan; Guo Rulin

doi:10.11883/1001-1455(2017)02-0237-06

Volume 37 Issue 2

Mar. 2017

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Article Navigation > Explosion And Shock Waves > 2017 > 37(2): 237-242

Liu Zhentang, Lin Song, Zhao Enlai, Zhang Songshan, Guo Rulin. Characteristics of space-time variations of coal dust residues from explosion in a horizontal pipe[J]. Explosion And Shock Waves, 2017, 37(2): 237-242. doi: 10.11883/1001-1455(2017)02-0237-06

Citation:

Liu Zhentang, Lin Song, Zhao Enlai, Zhang Songshan, Guo Rulin. Characteristics of space-time variations of coal dust residues from explosion in a horizontal pipe[J]. Explosion And Shock Waves, 2017, 37(2): 237-242. doi: 10.11883/1001-1455(2017)02-0237-06

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

doi: 10.11883/1001-1455(2017)02-0237-06

Liu Zhentang^{1, 2},
Lin Song^{1, 2
,
,},
Zhao Enlai^{1, 2},
Zhang Songshan^{1, 2},
Guo Rulin^{1, 2}

1.
Key Laboratory of Coal Methane and Fire Control, Ministry of Education, China University of Mining and Technology, Xuzhou 221116, Jiangsu, China
2.
School of Safety Engineering, China University of Mining and Technology, Xuzhou 221116, Jiangsu, China

Received Date: 2015-07-20
Rev Recd Date: 2015-11-06
Publish Date: 2017-03-25

Abstract

Abstract

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.
- space-time characteristics,
- residues analysis,
- coal dust,
- horizontal pipe

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References

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