TAN Ying-xin1， CAO Wei-guo1， ZHANG Yun1, CHANG Hao2
（1. School of Environment and Safety Engineering, North University of China, Taiyuan 030051, China；2. PLA Unit 63961， Beijing 100012, China）
Abstract： The effect of solid inertants like rock dust on explosion suppression was experimentally tested. By adding solid inertants with different concentrations into three kinds of coal dust, the maximum explosion pressure Pmax and the rate of explosion pressure rise（dp/dt）max were acquired. Based on this, the suppression effect of rock dust on coal dust explosion was analyzed. The experimental and analytical results show that there are two major factors that play an important role in explosion suppression: composition of solid inertant and particle size of solid inertant. The higher the concentration of solid inertant and the smaller the particle size of solid inertant, the better the suppression effect. In addition, the smaller the particle size of coal dust, the larger the amount of rock dust.
Key words： coal dust explosion; explosion pressure; solid inertants; rock dust
CLD number： X932 Document code： A
Article ID： 1674-8042（2018）04-0335-04 doi： 10.3969/j.issn.1674-8042.2018.04.005
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固态惰性介质对煤粉尘爆炸的抑制作用
谭迎新1， 曹卫国1， 张 云1， 常 皓2
（1. 中北大学 环境与安全工程学院， 山西 太原 030051； 2. 中国人民解放军63961部队， 北京 100012）
摘 要: 实验研究了固态惰性介质（以石灰石为例）对煤粉爆炸的抑制作用。 将不同含量的石灰石加入三种煤粉中， 测得了煤粉爆炸的最大压力及最大压力上升速度。 在此基础上， 分析了固态惰性介质对煤粉爆炸抑制的机理。 实验及分析结果表明， 固态惰性介质成分和粒度是影响固态惰性介质抑爆效果的两大因素。 隋性介质浓度越高、 粒度越小， 抑爆效果越好。 此外， 煤粉粒度越小， 需要的惰性介质量越大。
关键词: 煤粉爆炸； 爆炸压力； 固态惰性介质； 石灰石粉
引用格式： TAN Ying-xin， CAO Wei-guo， ZHANG Yun, et al. Suppression effect of solid inertants on coal dust explosion. Journal of Measurement Science and Instrumentation, 2018, 9(4)： 335-338. ［doi： 10.3969／j.issn.1674-8042.2018.04.005］
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