惰性介质抑制煤尘燃烧实验研究
Experimental Study on Suppression of Coal Dust Combustion by Inert Medium
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摘要: 为分析惰性介质对煤尘升温燃烧的影响,有效预防煤尘自燃,利用微机差热天平和气相色谱仪监测样品质量变化以及升温过程中一氧化碳和二氧化碳的释放量,对比分析惰性介质:水、磷酸二氢铵、碳酸钙对煤尘燃烧的抑制性能,考察单一惰性介质、不同配比的磷酸二氢铵和碳酸钙、不同粒径的磷酸二氢铵对煤尘升温燃烧的抑制效果。研究结果表明:碳酸钙和磷酸二氢铵混合物作为惰性介质,其抑制效果优于水和碳酸钙,但弱于磷酸二氢铵,瞬间爆炸与缓慢氧化过程中惰性介质的效果并不完全相同,混合物对煤尘燃烧无协同抑制作用。随着磷酸二氢铵粒径的减小,抑制性能增强。Abstract: The study aims to analyze the effect of inert medium on coal combustion and effectively prevent spontaneous combustion of coal dust. Thermal analyzer and gas chromatograph were used to measure changes of quality and concentration of CO and CO2. The inert mediums are H2O, NH4H2PO4 and CaCO3. Tests of single inert medium, NH4H2PO4 and CaCO3 with different proportions and particle sizes on the inhibition of combustion were conducted. The results show that the inhibition effect of NH4H2PO4 and CaCO3 mixture is better than that of H2O and CaCO3 but weaker than NH4H2PO4 alone. The effect of inert medium in the process of instantaneous explosion and slow oxidation is not identical and there is no synergistic suppression effect on coal dust combustion. With the decrease of the size of NH4H2PO4 , the inhibition performance is enhanced.
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[1] 邓军,李贝,李珍宝,等.预报煤自燃的气体指标优选试验研究[J].煤炭科学技术,2014,42(1):55-59. [2] Onifade M, Genc B. Spontaneous combustion of coals and coal-shales[J]. International Journal of Mining Science & Technology, 2018,28(6):94-101. [3] 伍毅,贺元骅,黄卫星.液固两相惰性介质对煤粉爆炸惰化的实验研究[J].消防科学与技术,2014,33(6):601-604. [4] 曾瑜,陈志,蒯念生,等.基于缓和原则的粉尘爆炸风险控制研究[J].中国安全科学学报,2011,21(6):72. [5] 古全忠,齐庆新,姚海飞.国外岩粉抑制煤尘爆炸和传播的应用研究[M].北京:煤炭工业出版社,2017:2-4. [6] 任一丹,刘龙,袁旌杰,等.粉尘爆炸中惰性介质抑制机理及协同作用[J].消防科学与技术,2015,34(2):158-162. [7] 谭迎新,李亚男.磷酸二氢铵对铝粉的爆炸抑制研究[J].中北大学学报(自然科学版),2015,36(4):458. [8] Dong Guang, Fan Baochun, Xie Bo, et al. Experimental investigation and numerical validation of explosion suppression by inert particles in large-scale duct[J]. Symposium on Combustion, 2005, 30(2):2361-2368. [9] Song Y, Nassim B, Zhang Q. Explosion energy of methane/deposited coal dust and inert effects of rock dust[J]. Fuel, 2018, 228:112-122. [10] 梁天水.超细水雾灭火有效性的模拟试验[D].合肥:中国科学技术大学,2012. [11] 刘红威,王飞.井下细水雾防灭火技术应用现状及发展趋势[J].煤炭科学技术,2015,43(10):86-92. [12] 郜二刚,李社红,吴代赦,等.基于发热量的中国煤炭碳含量研究[J].地球与环境,2014,42(1):95-101. [13] A Askarova, S Bolegenova, V Maximov, et al. Modeling the processes of combustion products formation in the coal-dust flame[J]. Physical Sciences and Technology, 2016, 3(2): 49-56. [14] Yang M, Chen X, Yuan B, et al. Inhibition Effect of Ammonium Dihydrogen Phosphate on the Thermal Decomposition Characteristics and Thermal Sensitivity of Ammonium Nitrate[J]. Journal of Analytical & Applied Pyrolysis, 2018, 134: 195-201. [15] 赵乘寿,宫聪,汪鹏,等.含磷酸二氢铵细水雾灭火有效性研究[J].消防科学与技术,2011,30(9):822. [16] 颜龙,徐志胜,徐彧,等.典型硼化合物与磷酸二氢铵协效阻燃松木的燃烧性能及热解动力学研究[J].中国安全生产科学技术,2015(3):19-23. [17] 甘媛,蒯念生,刘龙,等.碳酸钙对粉尘爆炸抑制效力的实验研究[J].消防科学与技术,2014,33(2):128. -
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