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正烷烃液体云雾最小点火能实验研究

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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
投稿时间:2018-01-05
DOI:10.15918/j.tbit1001-0645.2018.12.007
中文关键词: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
English Keywords:safety engineeringn-alkanevapor-liquid two-phase mistsparticle sizeminimum ignition energy
基金项目:贵州省科技支撑计划项目(201805330030620551)
作者单位
刘雪岭贵州理工学院 矿业工程学院, 贵州, 贵阳 550003
张奇北京理工大学 爆炸科学与技术国家重点实验室, 北京 100081
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中文摘要:
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20 L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0~40 μm粒径范围内,最小点火能随粒径增加了2个数量级.
English Summary:
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 20 L 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 0~40 μm.
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