煤矿其他可燃气体对空气中甲烷爆炸极限的影响

发布时间：2018-03-02 14:33

本文选题：矿井火区　切入点：甲烷(CH)　出处：《中国安全科学学报》2015年01期 　论文类型：期刊论文

【摘要】：为研究矿井火区中一氧化碳(CO),氢气(H2),乙烯(C2H4)和乙烷(C2H6)等可燃气体对空气中甲烷(CH4)爆炸极限和爆炸危险度(F值)的影响及双组份可燃气体爆炸界限和爆炸危险度的变化,采用空气中可燃气体爆炸极限测定方法完成一系列试验,测定加入不同体积分数其他可燃气体时CH4的爆炸极限。其他可燃气体的加入,均使空气中CH4和混合可燃气体的爆炸界限加宽;同时加大了CH4和混合可燃气体的爆炸危险度。试验结果表明:加入C2H4气体对CH4爆炸极限影响较大,使CH4及其双组份混合气体的爆炸危险度明显增大;加入量为2.0%时,CH4的F值增加了540%。而加入CO气体比加入C2H6,C2H4和H2等气体对CH4及混合气体的爆炸极限影响都小。
[Abstract]:In order to study the effects of combustible gases such as carbon monoxide (CO), hydrogen gas (H _ 2H _ 2H _ (4)) and ethane (C _ (2H _ (6))) on the explosion limit and explosion risk (F) of methane (Ch _ 4) in air, and the change of explosion boundary and explosion risk of two-component combustible gas, A series of tests were completed by means of the explosion limit measurement method of combustible gas in air. The explosion limit of CH4 was determined when different volume fraction of other combustible gas was added. The explosion limit of CH4 and mixed combustible gas in air is widened, and the explosion risk of CH4 and mixed combustible gas is increased. The experimental results show that the addition of C2H4 gas has a great influence on the explosion limit of CH4. The explosion risk of CH4 and its two-component mixture gas is obviously increased, and the F value of CH4 increases by 540 when the addition amount is 2.0. The effect of CO gas addition on the explosion limit of CH4 and mixed gas is smaller than that of C _ 2H _ 6, C _ 2H _ 4 and H _ 2 gas.
【作者单位】：西安科技大学西部矿井开采及灾害防治教育部重点实验室;西安科技大学能源学院;重庆市万州天然气公司;重庆三峡学院土木工程学院;
【基金】：国家自然科学基金资助(51304155) 陕西省重点科技创新团队计划(2012KCT-09)
【分类号】：TD712.7

【参考文献】