Experimental Study of Explosion Pressure Characteristics of Methane under High Temperature Conditions

Abstract:

Methane explosion pressure characteristics under the condition of different temperatures (25°C-200 °C) were studied by the special environment 20L explosion characteristics test system. By the experimental results, in the case of other conditions unchanged, with the increase of environmental temperature, the maximum explosion pressure of the optimum explosion concentration decrease, the maximum explosion pressure and the reciprocal of environmental temperature show linear attenuation law, the maximum pressure rise rate is not influenced by environmental temperature basically; Outside the scope of explosion limits at normal temperature and pressure, with the increase of environmental temperature, no explosion methane-air mixture are explosive gradually, the maximum explosion pressure and maximum pressure rise rate are in the relationship of different exponential growth with the increase of ambient temperature. The conclusions provide an important theoretical basis for prevent mine gas explosion accidents and coal bed methane safely use.

• Periodical: Applied Mechanics and Materials (Volumes 687-691)
• Pages: 148-152
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.687-691.148
• Online since: November 2014
• Authors: Run Zhi Li*, Rong Jun Si, Yan Song Zhang
• Keywords: Explosion Limits, Maximum Explosion Pressure, Maximum Pressure Rise Rate, Methane Explosion

References

[1] LI Run-zhi, HUANG Zi-chao, SI Rong-jun. Influence of environmental temperature on gas explosion pressure and its rise rate [J]. Explosion and shock Waves, 2013，33（4）：415-419.

[2] WANG Chang-yuan, ZHANG Wu, CHEN Jiu-fu, et al. Research on oxygen-containing liquefaction technology for low-concentration coal-bed gas in coal mining area [J], Mining Safety & Environmental Protection, 2011, 38(04): 1-3.

[3] LI Yan-hong, JIA Bao-shan, ZENG Wen, et al. Effect of initial pressure on kinetic characteristics of gas explosion in enclosed space[J]. Journal of Liaoning Technical University(Natural Science), 2011, 30(5): 697-701.

[4] HUANG Zi-chao, SI Rong-jun, ZHANG Yan-song, et al. Numerical Simulation of the Influence of Initial Temperature on Gas Explosion Characteristics [J]. Safety in Coal Mines, 2012, 43 (5): 5-11.

[5] YANG Zhao, WANG Xiao-ming, WU Xi, et al. Explosion Limits of Flammable Refrigerants Under Condition of Variable Temperature[J]. Journal of Tianjin University, 2012, 45(10): 851-854.

[6] LI Gang, LI Yu-feng, YUAN Chun-miao. Explosion Limits of CBM at Elevated Pressure and Temperature [J]. Journal of Northeastern University: Natural Science, 2012, 33(4): 580-583.