正烷烃液体云雾最小点火能实验研究  

Experimental Study on Minimum Ignition Energy of n-Alkane Mists

作　　者：刘雪岭 张奇[2] LIU Xue-ling;ZHANG Qi(School of Mining Engineering,Guizhou Institute of Technology,Guiyang,Guizhou 550003,China;State Key Laboratory of Explosion Science and Technology,Beijing Institute of Technology,Beijing 100081, China)

机构地区：[1]贵州理工学院矿业工程学院,贵州贵阳550003 [2]北京理工大学爆炸科学与技术国家重点实验室,北京100081

出　　处：《北京理工大学学报》2018年第12期1252-1255,1320,共5页Transactions of Beijing Institute of Technology

基　　金：贵州省科技支撑计划项目(201805330030620551)

摘　　要：针对可燃液体云雾在化工安全生产过程中爆炸敏感性的问题,进行了正烷烃(正己烷/正庚烷/正辛烷/正癸烷)云雾最小点火能变化特征规律的实验研究.利用自行研发的瞬态云雾浓度粒径测量系统和20L云雾爆炸参数测量系统分别得到汽、液两相云雾浓度粒径和点火实验测量结果.研究结果表明:正烷烃云雾最小点火能均大于其相应纯气相最小点火能;随着云雾粒径的增加,最小点火能呈指数性增长,在0～40μm粒径范围内,最小点火能随粒径增加了2个数量级.With n-alkane of vapor-liquid two-phase mists(n-hexane/n-heptane/n-octane/n-decane)as the research object,the minimum ignition energy of n-alkane mists was studied.By our self-developed measurement system,the concentrations and SMD of n-alkane mists were measured,and the results of the minimum ignition energy in 20L explosion parameter measuring system were obtained.The results show that the minimum ignition energy of n-alkanes was greater than that of the corresponding pure gas phase n-alkanes;with the increase of particle size,the minimum ignition energy of n-alkanes increased exponentially,and the minimum ignition energy of n-alkanes increased by two orders of magnitude in the range of 0~40μm.

关 键 词：安全工程技术 正烷烃液体 汽、液两相云雾 粒径大小 最小点火能 

分 类 号：X9[环境科学与工程—安全科学] O38[理学—流体力学]