C_(2)HF_(5)/伊利石抑制甲烷爆炸的实验研究  

Experimental study of C_(2)HF_(5)/illite to inhibit methane explosion

作　　者：杨克[1] 王林娟 纪虹[1] 陈雨峰 邢志祥[1] YANG Ke;WANG Linjuan;JI Hong;CHEN Yufeng;XING Zhixiang(School of Safety Science and Engineering,Changzhou University,Changzhou 213164,China;Jiangsu Gaohe Intelligent Equipment Co.,Ltd.,Changzhou 213164,China)

机构地区：[1]常州大学安全科学与工程学院,江苏常州213164 [2]江苏高和智能装备股份有限公司,江苏常州213164

出　　处：《安全与环境工程》2024年第5期62-70,共9页Safety and Environmental Engineering

基　　金：国家自然科学基金项目(51704041、52204204、51574046);江苏省自然科学基金项目(BK20140264、BK20150269);常州市科技支撑计划(社会发展)项目(CE20235039)。

摘　　要：为研发新型环保高效的甲烷爆炸抑制剂,基于自主研发的透明亚克力管道爆炸实验平台,测试五氟乙烷(C_(2)HF_(5))气体、伊利石粉体单相抑爆剂及C_(2)HF_(5)/伊利石粉体两相抑爆剂对甲烷-空气预混气体的抑爆效果和爆炸特性参数的影响,并通过电镜扫描、粒径分析对伊利石粉体进行了表征分析。结果表明:五氟乙烷及伊利石粉体单独作用时均对甲烷-空气预混气体有抑爆作用,C_(2)HF_(5)的抑爆效果随其体积分数的增大而增大,当体积分数大于6%时完全抑爆,伊利石粉体存在最佳抑爆质量浓度,为0.16 g/L;C_(2)HF_(5)/伊利石粉体两相抑爆剂共同作用下的抑爆效果更佳,具有气体和粉体的双重抑爆性,且C_(2)HF_(5)存在临界体积分数,当高于临界体积分数时,添加较低质量浓度的伊利石粉体即可完全抑爆,该临界体积分数为3%~4%。最后,结合气体、粉体抑爆剂的热解特性及伊利石粉体的结构表征和元素组成分析了C_(2)HF_(5)/伊利石抑制甲烷-空气混合气体爆炸的机理,可为瓦斯爆炸灾害新型抑爆剂的开发利用提供参考。In order to develop a new environmentally friendly and efficient methane explosion inhibitor,based on the self-developed transparent acrylic pipeline explosion experimental platform,the effects of single-phase gas pentafluoroethane(C_(2)HF_(5)),illite powder single-phase inhibitor and C_(2)HF_(5)/illite powder two-phase inhibitor on the explosion suppression effect and explosion characteristic parameters of methane/air premixed gas were tested,and the illite powder was characterized and analyzed by electron microscope scanning and particle size analysis.The results show that pentafluoroethane and illite powder have a detoxification effect on methane/air premixed gas when acting alone,and the detonation effect of C_(2)HF_(5)increases with the increase of volume fraction,and when the volume fraction is greater than 6%,the explosion suppression is completely suppressed,and the best explosion inhibition mass concentration of illite powder is 0.16 g/L.The explosion suppression effect under the joint action of C_(2)HF_(5)/illite powder two-phase explosion suppressant is better,with the dual explosion suppression of gas and powder,and C_(2)HF_(5)has a critical volume fraction,when it is higher than the critical volume fraction.The addition of a lower mass concentration of illite powder can completely suppress the explosion.The critical volume fraction is 3%~4%.In addition,the mechanism of C_(2)HF_(5)/illite inhibition of methane/air mixed gas explosion was analyzed by combining the pyrolysis characteristics of gas and powder explosion suppressants and the characterization and elemental composition of illite powder.This study can provide reference for the development and utilization of new explosion suppressants for gas explosion disasters.

关 键 词：甲烷爆炸 抑爆剂 抑爆性能 五氟乙烷(C_(2)HF_(5)) 伊利石粉体 

分 类 号：X932[环境科学与工程—安全科学]