甲烷浓度和煤粉粒径对混合爆炸火焰传播速度的影响 |
| |
引用本文: | 田野,王保民,李利国. 甲烷浓度和煤粉粒径对混合爆炸火焰传播速度的影响[J]. 科学技术与工程, 2017, 17(9) |
| |
作者姓名: | 田野 王保民 李利国 |
| |
作者单位: | 中北大学,中北大学,内蒙古科技大学 |
| |
摘 要: | 为评价瓦斯空气煤粉混合爆炸危险性大小,探究爆炸机理,方便相关事故原因分析,利用水平透明玻璃式爆炸管道,探究了甲烷浓度、煤粉粒径对复合爆炸中火焰传播速度的影响。实验结果表明:随着甲烷浓度的增大,火焰传播速度先增大后减小,在接近爆炸上限浓度和爆炸下限浓度时达到最大值;随着煤粉粒径的增大,火焰传播速度逐渐变小,最大火焰传播速度也变小,甲烷浓度为10%,煤粉粒径为30μm时火焰传播速度最大。
|
关 键 词: | 甲烷 煤粉 复合爆炸 粒径 甲烷浓度 火焰传播速度 |
收稿时间: | 2016-09-21 |
修稿时间: | 2016-09-21 |
Effect of Methane Concentration and Particlesizeon the Speed of Flame |
| |
Abstract: | In order to evaluate the potential hazard of coal dust explosion,explore the explosion mechanism,analysis the cause of related accidents,using level pipeline,formed experiment device,researched the effect of methane concentration and particle size on the flame propagation speed.Results show that:with the increase of methane concentration, the flame propagation velocity increases first and then decreases, reaches the maximum value near the explosion limit concentration and minimum explosive concentration; with the increase of coal particle size, flame propagation speed becomes smaller, the maximum flame propagation velocity is smaller when the concentration is 10% and pulverized coal particle size is 30. |
| |
Keywords: | methane pulverized coal compound explosion particle size methane concentration flame propagation velocity |
本文献已被 CNKI 等数据库收录! |
| 点击此处可从《科学技术与工程》浏览原始摘要信息 |
|
点击此处可从《科学技术与工程》下载全文 |
|