摘要
煤炭开采过程中产生的大量低浓度瓦斯直接排入大气,造成严重的大气污染,为提高低浓度甲烷(CH4<5%)利用率,理论分析了极低浓度甲烷与二甲醚掺混爆炸的可行性,通过掺混爆炸试验,研究了不同掺混当量比下爆炸参数,结果表明:掺混爆炸最大压力和最大压力上升速率随当量比的增加先升高后降低,在化学计量比附近达到最大值。
A large amount of low concentration gas produced during coal mining is directly discharged into the atmosphere,causing serious air pollution.In order to improve the utilization ratio of the low concentration methane(CH4<5%),discussed the feasibility of mixing explosion of low concentration methane with dimethyl ether through theoretical analysis.The explosion parameters with different mixing equivalence ratios were studied through mixing explosion experiments.The results showed that the maximum pressure and the maximum pressure rising rate of mixing explosion increased first and then decreased with the increase of equivalent ratio,and reached the maximum near the stoichiometric ratio.
作者
宋来臣
聂百胜
SONG Lai-chen;NIE Bai-sheng(Zijin Mining Group Co.,Ltd.,Longyan 364000,China;China University of Mining and Technology(Beijing),Beijing 100083,China)
出处
《煤炭技术》
CAS
2020年第2期101-103,共3页
Coal Technology
关键词
低浓度甲烷
掺混爆炸
爆炸下限
最大爆炸压力
最大压力上升速率
low concentration methane
mixing explosion
low explosive limit
maximum explosion pressure
maximum pressure rising rate
