煤矿瓦斯吸附剂及隔爆材料的防爆实验

Experimental investigation on explosion-proof with coal mine gas adsorbent and explosion-proof material

将吸附剂和隔爆材料分别填充于爆炸容器中进行瓦斯防爆实验研究。结果表明:常压条件下,CH4在O2中的爆炸极限为8.5%～62.5%,爆炸压力最大时的CH4体积分数为36%,略高于理论值(33.3%)。单球容器中填充吸附剂具有很好的抑爆性能,即使遇到点火源也能抑制爆炸的发生;连通容器中,吸附剂能很好地阻止爆炸的传播;随着压力的增大,吸附剂抑爆效果变差,但当压力超过一定值时,随着压力的增大,其抑爆效果变好。隔爆材料由于其具有良好的导热性,无论是在空气、O2环境中,还是在加压条件下都能很好地阻止爆炸的传播;压力上升速率越高,其隔爆效果越好。

Experimental investigation on explosion-proof was carried out by adding adsorbent and explosion-proof material into explosion vessel.The results showed that the explosion limit of methane in oxygen was 8.5%-62.5% under atmospheric pressure.The maximum explosion pressure was obtained when the concentration of methane was 36%,it was slightly higher than the theoretical value（33.3%）.It could prevent the explosion even ignition source appeared when the adsorbent was filled into a single vessel.Adsorbent could also prevent the transmission of explosion when filled in linked vessels.With the increase of the pressure,the effect of explosion-proof became worse.But when the pressure was over a certain value,with the increase of the pressure,the effect would be better.Because of good thermal conductivity,explosion-proof material could prevent the transmission of explosion whether in the air and oxygen or under pressured conditions.The higher the rate of pressure,the better the explosion-proof effect.