高挥发分煤尘对瓦斯爆炸极限的影响
发布时间:2018-05-03 16:49
本文选题:瓦斯煤尘共存 + 爆炸极限 ; 参考:《煤矿安全》2015年08期
【摘要】:瓦斯爆炸是影响煤矿安全生产的重大灾害之一,煤尘的存在会影响瓦斯的爆炸极限。运用20 L爆炸特性测试系统研究了高挥发分煤尘对瓦斯爆炸极限的影响,并对实验煤样在40~260℃进行了析出气体分析。实验结果表明:在有煤尘参与的条件下,瓦斯爆炸上限变得更低,当加入100 g/m3煤尘后,瓦斯爆炸上限下降到了12.8%。在爆炸下限附近,煤尘对瓦斯爆炸有促进作用,煤尘的存在使得瓦斯爆炸下限会变得更低,加入100 g/m3煤尘后,瓦斯爆炸的下限下降到了3.1%。
[Abstract]:Gas explosion is one of the major disasters affecting the safety of coal mine production. The existence of coal dust will affect the explosion limit of gas. The effect of high volatile coal dust on the limit of gas explosion was studied by using a 20L explosion test system, and the gas precipitated from experimental coal samples was analyzed at 40 鈩,
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