Experimental Study on Inhibition of Methane Explosion by Particle Size
In order to explore the influence of attapulgite powder modified with different particle sizes on methane explosion,a small-size semi-closed visual explosion experimental platform should be built independently.Methane explosion effects of attapulgite powders modified with different particle sizes and without powder spraying were studied when methane concentration was 9.5％.The small particle size powder has the best detonation suppression effect,which reduces the maximum explosive overpressure by 36.05％,delays the occurrence time of the maximum explosive overpressure by 17.5ms,and reduces the peak flame propagation velocity by 24.50％compared with the same period.The video image of the explosion is recorded by the high-speed photographer,and the flame structure,ahead shape,etc.are analyzed.
modified attapulgite powdermethane suppressionparticle size distribution
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