含NaCl荷电细水雾对甲烷爆炸火焰传播的抑制特性

发布时间：2018-05-17 04:30

本文选题：感应荷电 + NaCl添加剂　；参考：《化工学报》2017年11期

【摘要】：为进一步提高细水雾抑制甲烷爆炸的效率,搭建了小尺寸细水雾抑制甲烷爆炸实验平台,在普通细水雾中添加NaCl添加剂,并对其荷电,进行含NaCl添加剂荷电细水雾抑制甲烷爆炸火焰传播特性的实验研究。结果表明,含NaCl添加剂荷电细水雾对甲烷爆炸火焰传播的抑制效果,优于普通细水雾单独添加NaCl添加剂和荷电作用的抑制效果之和。随着NaCl浓度和荷电电压的增大,甲烷爆炸火焰传播速度明显减小;其中荷电8 kV、NaCl浓度12.5%的工况抑制效果最佳,甲烷爆炸火焰传播速度二次峰值较普通细水雾作用时下降了10.747 m·s~(-1),下降比例高达60.26%;分析认为,在细水雾抑制甲烷爆炸火焰传播的过程中,NaCl添加剂和荷电作用之间存在相互促进抑制效果的耦合作用。
[Abstract]:In order to further improve the efficiency of water mist in suppressing methane explosion, a small scale water mist test platform for methane explosion suppression was set up. NaCl additive was added to the ordinary water mist and charged to it. The experimental study on the suppression of methane explosion flame propagation by charged water mist containing NaCl additive was carried out. The results show that the inhibitory effect of charged water mist containing NaCl additive on flame propagation of methane explosion is better than that of adding NaCl additive and charge action of ordinary water mist alone. With the increase of NaCl concentration and charged voltage, the propagation speed of methane explosion flame decreases obviously, and the best suppression effect is obtained when the charge concentration of 8 kV NaCl is 12.5%. The secondary peak value of flame propagation velocity of methane explosion decreases by 10.747 m ~ (-1) ~ (-1), and the ratio of decrease is as high as 60.26 when compared with that of ordinary water mist. In the process of water mist inhibiting the flame propagation of methane explosion, there is a coupling effect between the additive of NaCl and the charge effect.
【作者单位】：重庆大学煤矿灾害动力学与控制国家重点实验室;河南理工大学安全科学与工程学院;
【基金】：国家自然科学基金项目(51574111) 煤矿灾害动力学与控制国家重点实验室自主研究课题重点项目(2011DA 105287-ZD201401)~~
【分类号】：TD712.7

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