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Chinese Journal of High Pressure Physics  > 2020  >  34(1): 015201.
MA Qiuju, SHAO Juncheng, WANG Zhongshan, LIU Jiaping. Experimental Study of the Hydrogen Proportion and Ignition Energy Effects on the CH4-H2 Mixture Explosion Intensity[J]. Chinese Journal of High Pressure Physics, 2020, 34(1): 015201. doi: 10.11858/gywlxb.20190803
Citation: MA Qiuju, SHAO Juncheng, WANG Zhongshan, LIU Jiaping. Experimental Study of the Hydrogen Proportion and Ignition Energy Effects on the CH4-H2 Mixture Explosion Intensity[J]. Chinese Journal of High Pressure Physics, 2020, 34(1): 015201. doi: 10.11858/gywlxb.20190803
shu

Experimental Study of the Hydrogen Proportion and Ignition Energy Effects on the CH4-H2 Mixture Explosion Intensity

doi: 10.11858/gywlxb.20190803
  • 1.

    State Key Laboratory of Coal Resources and Safe Mining, China University of Mining & Technology (Beijing), Beijing 100083, China

  • 2.

    State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China

  • Received Date: 03 Jul 2019
  • Rev Recd Date: 23 Jul 2019
    Abstract
  • CH4-H2 mixture explosion experiments were performed in a 20 L spherical explosion vessel with the equivalence ratio of 1. Gas proportion and ignition energy were varied to explore their effects on the explosion pressure and intensity. It is found that higher hydrogen proportion causes higher explosion shock wave propagation speed, while the ignition energy has little effects on the explosion shock wave propagation speed. Higher ignition energy can enhance the explosion overpressure, and this enhancement effect is remarkable when the hydrogen proportion is lower, and is not evident when the hydrogen proportion is higher. The effect of ignition energy on the explosion severity index KG is not evident, but the effect of hydrogen proportion on KG is remarkable. The positive effect of hydrogen addition on KG is very slight at low hydrogen proportion while it becomes much more pronounced at higher hydrogen contents. Furthermore, the explosion intensity of hydrogen is approximately tenfold of that of methane explosion with corresponding same equivalent ratio, and therefore, the presence of hydrogen will greatly enhance the explosion hazard of methane.

     

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