摘要
粉体材料能够有效地抑制矿井瓦斯爆炸,其粒径越小,抑爆作用越明显,但对于不同浓度的甲烷和空气混合气体而言,粉体材料抑制爆炸的效果不同。文中采用20L球形不锈钢爆炸罐试验系统,考察粒径1.3μm超细Al(OH)3粉体对不同浓度的甲烷和空气混合气体的抑爆效果。实验结果表明,超细Al(OH)3粉体对抑制甲烷爆炸有效果,对于不同甲烷浓度的甲烷-空气混合气体,可使其最大爆炸压力平均降低11.08%,最大压力上升速率平均降低66.15%,到达最大爆炸压力的时间平均降低57.53%。研究结果对于超细粉体应用于矿井瓦斯爆炸的控制具有一定的指导意义。
Powder material can suppress effectively the gas explosion in mine, the less the grain size of powder material, the more obvious function of powder on suppressing methane explosion. However, to the mixture gases of methane and air, the effect of powder suppressing methane explosion is different. A trial system of 20 L spherical stainless explosion container was used to investigate the effect of Al（OH） 3 ultrafine powder with 1.3μm particle size on suppressing the mixture gases of methane and air with different concentration. The experimental results show that Al（ OH）3 ultra：fine powder can effectively suppress the methane explosion, for the mixture gases of methane and air with different concentration, which can drop the average maximum explosion pressure by 11.08 %, drop the average rise speed of maximum pressure by 66.15 %, drop the average time by 57.53 % that from collecting pressure to arriving the maximum explosion pressure. The research results have certain significance for ultrafine pow- der applied to control gas explosion in mine.
出处
《西安科技大学学报》
CAS
北大核心
2009年第4期388-390,395,共4页
Journal of Xi’an University of Science and Technology
基金
国家自然科学基金项目(50704025)
国家自然科学基金项目(50874088)
教育厅专项基金项目(08JK351)
关键词
瓦斯爆炸
超细粉体
甲烷爆炸
gas explosion
ultrafine powder
methane explosion
