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首页> 外文学位 >Rock dust inerting of coal dust explosions in a 20-L Siwek explosion chamber.
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Rock dust inerting of coal dust explosions in a 20-L Siwek explosion chamber.

机译：在20升Siwek爆炸室内，煤尘爆炸产生的岩尘惰性。

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摘要

Laboratory-scale experiments were conducted in a Siwek 20-L spherical explosion chamber to examine the influences of ignition energy, coal dust concentration, and particle size of rock dust on suppression of coal dust explosions.;The amount of rock dust required to inert an explosion was found to increase as the ignition energy used to initiate the explosion was increased. Excessively high amounts of rock dust were required when using high ignition energies. This is due to a phenomenon termed overdriving the explosion. Results show that an ignition source greater than 5 kJ will overestimate the amount of rock dust required to inert an explosion. The amount of rock dust required to inert an explosion decreases as coal dust concentration increases. Dust concentrations near stoichiometric require the greatest amount of rock dust to inert. The experimental results in this thesis also show that as rock dust particle size decreases, less rock dust is required to inert an explosion.;Comparison of these experimental results with other researchers show that a 5-kJ ignition source produces inerting levels similar to those determined in mine-scale experiments and that a 2.5-kJ ignition source produces inerting levels similar to those determined in the United States Bureau of Mines 20-L chamber. (Abstract shortened by UMI.)
机译：在Siwek 20-L球形爆炸室中进行了实验室规模的实验，以研究点火能量，煤尘浓度和岩尘粒径对抑制煤尘爆炸的影响。随着用于引发爆炸的点火能量的增加，爆炸也增加了。当使用高点火能量时，需要过多的岩石粉尘。这是由于一种称为过度驱动爆炸的现象造成的。结果表明，大于5 kJ的点火源会高估惰性爆炸所需的岩石粉尘量。惰性气体爆炸所需的岩尘量随煤尘浓度的增加而减少。接近化学计量比的粉尘浓度需要大量的岩粉才能达到惰性。本论文的实验结果还表明，随着岩尘粒径的减小，惰性爆炸所需的岩屑也将减少。;与其他研究人员进行的这些实验结果的比较表明，5 kJ点火源产生的惰性水平与确定的惰性水平相似。在矿山规模的实验中发现，一个2.5 kJ的点火源产生的惰性水平类似于美国矿务局20-L室确定的惰性水平。 （摘要由UMI缩短。）

著录项

  • 作者

    Dastidar, Ashok Ghose.;

  • 作者单位

    Technical University of Nova Scotia (Canada).;

  • 授予单位 Technical University of Nova Scotia (Canada).;
  • 学科 Engineering Chemical.
  • 学位 M.A.Sc.
  • 年度 1996
  • 页码 163 p.
  • 总页数 163
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 耳科学、耳疾病;
  • 关键词

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