期刊文献+

煤粉—惰性介质混合体系爆炸特性实验研究 被引量:9

Experiment-based Investigations on Explosion Behaviors of Coal Dust-inertant Mixtures
下载PDF
导出
摘要 为深入认识煤粉—惰性介质混合体系爆炸行为,在Siwek 20 L球形爆炸测试系统内研究了煤粉—惰性介质混合体系的爆炸威力(最大爆炸压力、最大升压速率、燃烧持续时间)、敏感度(爆炸上、下限)和惰性介质的抑爆效力,并重点考察了点火能量、煤粉热值、惰性介质组分、煤粉浓度、煤/惰性介质混合比等因素的影响。结果表明,添加惰性介质能显著降低煤粉爆炸威力,其抑爆效力随点火能量增加而下降,并由此建议采用5~10 kJ点火能量考察惰化效应;煤粉热值增加可显著提高混合体系的爆炸威力;就惰化效应而言,湿分的抑爆效力优于磷酸二氢铵和碳酸钙,而磷酸二氢铵的抑爆效力又优于碳酸钙,其中煤粉完全惰化所需惰化剂量与煤尘浓度密切相关,在200~400 g/m3处有最大值,为"最危险浓度";增加惰性介质添加量可降低爆炸上限,提高爆炸下限,有效压缩煤粉尘可爆浓度范围。研究结果对深入理解粉尘爆炸规律、优化惰化标准,完善测试方法有参考价值。 为深入认识煤粉—惰性介质混合体系爆炸行为,在Siwek 20 L球形爆炸测试系统内研究了煤粉—惰性介质混合体系的爆炸威力(最大爆炸压力、最大升压速率、燃烧持续时间)、敏感度(爆炸上、下限)和惰性介质的抑爆效力,并重点考察了点火能量、煤粉热值、惰性介质组分、煤粉浓度、煤/惰性介质混合比等因素的影响。结果表明,添加惰性介质能显著降低煤粉爆炸威力,其抑爆效力随点火能量增加而下降,并由此建议采用5~10 kJ点火能量考察惰化效应;煤粉热值增加可显著提高混合体系的爆炸威力;就惰化效应而言,湿分的抑爆效力优于磷酸二氢铵和碳酸钙,而磷酸二氢铵的抑爆效力又优于碳酸钙,其中煤粉完全惰化所需惰化剂量与煤尘浓度密切相关,在200~400 g/m3处有最大值,为'最危险浓度';增加惰性介质添加量可降低爆炸上限,提高爆炸下限,有效压缩煤粉尘可爆浓度范围。研究结果对深入理解粉尘爆炸规律、优化惰化标准,完善测试方法有参考价值。
出处 《四川大学学报(工程科学版)》 EI CAS CSCD 北大核心 2012年第S1期229-234,共6页 Journal of Sichuan University (Engineering Science Edition)
关键词 煤粉 粉尘爆炸 惰化 点火能量 爆炸最危险浓度 coal dust dust explosion inerting ignition energy the worst-case concentration
  • 相关文献

参考文献10

  • 1伍毅,袁旌杰,蒯念生,黄卫星.碳酸盐对密闭空间粉尘爆炸压力影响的试验研究[J].中国安全科学学报,2010,20(10):92-96. 被引量:30
  • 2高聪,李化,苏丹,黄卫星.密闭空间煤粉的爆炸特性[J].爆炸与冲击,2010,30(2):164-168. 被引量:39
  • 3Kuai Niansheng,Li Jianming,Chen Zhi,et al.Experiment-based investigations of magnesium dust explosion character-istics. Journal of Loss Prevention in the Process Indus-tries . 2011
  • 4AMYOTTE P R,PEG M J.Application of inherentsafety principles to dust explosion prevention andmitigation. Process safety and EnvironmentProtection . 2009
  • 5AMYOTTE P R.Solid inhibitors and their use in dustexplosion prevention and mitigation. Journal of LossPrevention in the Process Industries . 2006
  • 6Dastidar A G,Amyotte P R.Using calculated adiabatic flametemperatures to determine dust explosion Inerting requirements. Process Safety and Environmental Protection . 2004
  • 7Hertzberg M,Zlochower I A.Devolatilization rates and interparticle wave structures during the combustion of pulverizedcoals and polymathlmethacrylate. Proceedings of the 23rd Symposium on Combustion . 1990
  • 8Bliek A,Van Poeljie W M,Van Swaaij W P Met al.Effects of Intraparticle Heat and Mass Transfer during Devolatilization of a Single Coal Particle. American Institute of Chemical Engineers Journal . 1985
  • 9Chawla N,Amyotte P R,Pegg M J.A comparision of experimental methods to determine the minimum explosible concen-tration of dusts. Journal of Loss Prevention in the Process Industries . 1996
  • 10Tasneem Abbasi,S.A Abbasi.Dust explosions–Cases, causes, consequences, and control. Journal of Hazardous Materials . 2007

二级参考文献23

  • 1李运芝,袁俊明,王保民.粉尘爆炸研究进展[J].太原师范学院学报(自然科学版),2004,3(2):79-82. 被引量:27
  • 2Eckhoff R K. Current status and expected future trends in dust explosion research[J]. Journal of Loss Prevention in the Process Industries, 2005,18(4-6):225-237.
  • 3Eckhoff R K. Dust Explosions in the Process Industries[M]. 3rd Edition. Amsterdam: Gulf Professional Publishing, 2003.
  • 4Going J E, Chatrathi K, Cashdollar K L. Flammability limit measurements for dusts in 20-L and 1-m3 vessels[J]. Journal of Loss Prevention in the Process Industries, 2000,13(3-5):209-219.
  • 5Dastidar A, Amyotte P, Going J, et al. Inerting of coal dust explosions in laboratory-and intermediate-scale chambers[J]. Fuel, 2001,80(11):1593-1602.
  • 6Proust Ch, Accorsi A, Dupont L. Measuring the violence of dust explosions with the "20 l sphere" and with the standard "ISO 1 m3 vessel" : Systematic comparison and analysis of the discrepancies[J]. Journal of Loss Prevention in the Process Industries, 2007,20(4-6):599-606.
  • 7Chawla N, Amyotte P R, Pegg M J. A comparison of experimental methods to determine the minimum explosible concentration of dusts[J]. Fuel, 1996,75(6):654-658.
  • 8Randeberg E, Eckhoff R K. Measurement of minimum ignition energies of dust clouds in the <1 mJ region[J]. Journal of Hazardous Materials, 2007,140(1-2):237-244.
  • 9Kenneth L.Cashdollar.Coal dust explosibility[J]. Journal of Loss Prevention in the Process Industries,1996,9(1):65-76.
  • 10罗光华,施光明,张宗国,等.安全工程实验指导书[M].成都:四川大学化工学院,2006:20-37.

共引文献65

同被引文献79

引证文献9

二级引证文献52

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部