| 变温下多元可燃气体对甲烷爆炸特性的影响数值模拟 |
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| 引用本文： | 罗振敏,王磊,李秀芳,王涛.变温下多元可燃气体对甲烷爆炸特性的影响数值模拟[J].煤矿安全,2020(3):6-11. |
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| 作者姓名： | 罗振敏 王磊 李秀芳 王涛 |
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| 作者单位： | ;1.西安科技大学安全科学与工程学院;2.陕西省工业过程安全与应急救援工程技术研究中心;3.西部矿井开采及灾害防治教育部重点实验室 |
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| 基金项目： | 国家重点研发计划资助项目(2017YFC0804702-5);陕西省自然科学基础研究计划面上资助项目(2017JM5068,2018JM5152)。 |
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| 摘 要： | 为有效地预防及控制矿井下煤自燃过程中产生的常见可燃气体对甲烷爆炸所造成的后果,利用FLACS软件模拟研究了5种初始温度(25、60、100、140、180℃)下C2H4、C2H6、H2和CO这4种气体按不同比例混合后对甲烷最大爆炸压力和最大爆炸温度的影响。研究表明:在定容常压下,随初始温度的增加,与任意多元气体混合后的甲烷,其最大爆炸温度呈上升趋势,最大爆炸压力则呈下降的趋势。随4种可燃气体的混合体积分数从0.4%增加到2.0%,甲烷最大爆炸温度和最大爆炸压力上升且初始温度较低时升幅更大。
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| 关 键 词： | 甲烷(瓦斯)爆炸 多元可燃气体 体积分数 初始温度 最大爆炸温度 最大爆炸压力 |
Numerical Simulation of Effect of Multi-component Combustible Gases on Methane Explosion at Variable Temperature |
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| LUO Zhenmin,WANG Lei,LI Xiufang,WANG Tao.Numerical Simulation of Effect of Multi-component Combustible Gases on Methane Explosion at Variable Temperature[J].Safety in Coal Mines,2020(3):6-11. |
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| Authors: | LUO Zhenmin WANG Lei LI Xiufang WANG Tao |
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| Affiliation: | (School of Safety Science and Engineering,Xi'an University of Science and Technology,Xi'an 710054,China;Shaanxi Engineering Research Center for Industrial Process Safety&Emergency Rescue,Xi'an 710054,China;Key Laboratory of Western Mines Exploitation and Disaster Prevention of the Ministry of Education,Xi'an 710054,China) |
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| Abstract: | To study the influence of common combustible gas produced in spontaneous combustion of underground coal on methane explosion,the effects of the mixture of C2H4,C2H6,H2and CO on the maximum explosion pressure and temperature of methane were simulated by FLACS software at 5 initial temperatures(25,60,100,140 and 180℃).The results show that,with the increase of initial temperature,the maximum explosion temperature of methane and the maximum explosion pressure show an upward trend,while the maximum explosion pressure shows a downward trend.With the increase of the volume fraction of the four combustible gases from 0.4%to 2.0%,the maximum explosion temperature and the maximum explosion pressure of methane increased even more when the initial temperature was lower. |
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| Keywords: | methane(gas)explosion multi-component combustible gas volume fraction initial temperature maximum explosion temperature maximum explosion pressure |
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