Experimental study on suppression effects of inert gas/red mud two-phase inhibitors on gas explosion

doi:10.16265/j.cnki.issn 1003-3033.2020.10.016

Abstract

Abstract: In order to develop new gas/solid two-phase inhibitors, impacts of CO₂ and N₂/red mud two-phase inhibitors on maximum explosion pressure and average flame propagation velocity of methane were tested via a gas explosion experimental platform. Then, difference of gas explosion suppression performance between two-phase inhibitors and single-phase inhibitors was compared. The results show that inert gas/red mud two-phase inhibitor has dual explosion suppression effect which is better than that of single-phase inhibitors on methane explosion and increases with growth of inert gas's volume fraction and red mud's mass concentration. Meanwhile, there is a critical volume fraction for inert gas. If it is higher than this critical value, needed concentration of red mud to completely suppress the methane explosion is lower. However, in case of lower volume fraction, that of red mud will increase obviously.

Key words: inert gas/red mud two-phase explosion inhibitors, gas explosion, dust explosion inhibitor, gas explosion inhibitor, average flame propagation velocity

CLC Number:

X932

SUN Chaolun, ZHANG Yimin, PEI Bei, WANG Yan, MENG Xiangqing, JI Wentao. Experimental study on suppression effects of inert gas/red mud two-phase inhibitors on gas explosion[J]. China Safety Science Journal, 2020, 30(10): 112-118.

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