粒径影响改性凹凸棒土抑制甲烷爆炸实验研究  

Experimental Study on Inhibition of Methane Explosion by Particle Size

作　　者：陈凯峰 杨克[1] 纪虹[1] 邢志祥[1] 蒋军成 CHEN Kaifeng;YANG Ke;JI Hong;XING Zhixiang;JIANG Juncheng(School of Safety Science and Engineering,School of Emergency Management Science and Engineering,Changzhou University,Changzhou 213164,China;Shandong Hi-tech Spring Chemical Industry Co.,Ltd.,Dongying 257000,China)

机构地区：[1]常州大学安全科学与工程学院、应急管理科学与工程学院,常州213164 [2]山东海科新源材料科技股份有限公司,东营257000

出　　处：《工程热物理学报》2024年第6期1857-1862,共6页Journal of Engineering Thermophysics

基　　金：国家自然科学基金资助项目(No.51704041,No.52204204);常州市重点研发计划(社会发展)项目(No.CE20235039)。

摘　　要：自主搭建小尺寸半封闭可视化爆炸实验平台,探究不同粒径改性凹凸棒土粉体对甲烷爆炸的影响。研究结果表明:小粒径粉体的抑爆效果最好,使最大爆炸超压下降了36.05%,最大爆炸超压出现的时间延迟了17.5 ms,火焰传播速度峰值同比下降了24.50%。同时,借助高速摄影系统记录下爆炸全过程的视频图像,对火焰结构、锋面形状等进行分析。In order to explore the influence of attapulgite powder modified with different particle sizes on methane explosion,a small-size semi-closed visual explosion experimental platform should be built independently.Methane explosion effects of attapulgite powders modified with different particle sizes and without powder spraying were studied when methane concentration was 9.5%.The small particle size powder has the best detonation suppression effect,which reduces the maximum explosive overpressure by 36.05%,delays the occurrence time of the maximum explosive overpressure by 17.5ms,and reduces the peak fame propagation velocity by 24.50%compared with the same period.The video image of the explosion is recorded by the high-speed photographer,and the fame structure,ahead shape,etc.are analyzed.

关 键 词：改性凹凸棒土粉体 甲烷抑爆 粒度分布 

分 类 号：TK121[动力工程及工程热物理—工程热物理]