N2与CO2对合成气爆炸特性影响的实验研究

余明高 韦贝贝 郑凯

余明高, 韦贝贝, 郑凯. N2与CO2对合成气爆炸特性影响的实验研究[J]. 爆炸与冲击, 2019, 39(6): 065401. doi: 10.11883/bzycj-2018-0131
引用本文: 余明高, 韦贝贝, 郑凯. N2与CO2对合成气爆炸特性影响的实验研究[J]. 爆炸与冲击, 2019, 39(6): 065401. doi: 10.11883/bzycj-2018-0131
YU Minggao, WEI Beibei, ZHENG Kai. Effect of inert gas addition on syngas explosion[J]. Explosion And Shock Waves, 2019, 39(6): 065401. doi: 10.11883/bzycj-2018-0131
Citation: YU Minggao, WEI Beibei, ZHENG Kai. Effect of inert gas addition on syngas explosion[J]. Explosion And Shock Waves, 2019, 39(6): 065401. doi: 10.11883/bzycj-2018-0131

N2与CO2对合成气爆炸特性影响的实验研究

doi: 10.11883/bzycj-2018-0131
基金项目: 国家自然科学基金(U1361205,51574111,50974055);煤矿灾害动力学与控制国家重点实验室自主研究课题(2011DA 105287-ZD201401)
详细信息
    作者简介:

    余明高(1963- ),男,教授,13333910808@126.com

    通讯作者:

    郑 凯(1989- ),男,讲师,zkcqu@cqu.edu.cn

  • 中图分类号: O381; X932

Effect of inert gas addition on syngas explosion

  • 摘要: 为了研究惰性气体(氮气及二氧化碳)对合成气爆炸特性的影响,利用20 L球形爆炸仪器,开展不同体积分数氮气与二氧化碳作用下不同当量比合成气的爆炸实验,从爆炸峰值压力、爆炸压力到达峰值时间、爆炸指数方面分析惰性气体对合成气爆炸特性的影响。研究结果表明:惰性气体体积分数的增加会降低合成气的爆炸压力和爆炸指数,推迟爆炸压力到达峰值的时间;在相同体积分数下,CO2比N2能更有效地降低合成气的爆炸峰值压力和爆炸指数,减小爆炸反应的剧烈程度,CO2在抑制合成气爆炸方面比N2的效果明显。
  • 图  1  20 L球形爆炸测试系统

    Figure  1.  Test system with a 20-L spherical explosion vessel

    图  2  添加惰性气体后合成气爆炸压力的变化

    Figure  2.  Pressure evolution during syngas explosion with inert gas

    图  3  添加惰性气体后爆炸峰值压力的变化

    Figure  3.  Maximum pressure during syngas explosionwith inert gas

    图  4  添加惰性气体后压力到达峰值的时间

    Figure  4.  Time to peak pressure during syngas explosion with inert gas

    图  5  添加惰性气体后爆炸指数的变化

    Figure  5.  Deflagration index during syngas explosionwith inert gas

    表  1  不同实验工况下气体体积分数

    Table  1.   Volume fraction of gases under different experimental conditions

    $ {{\textit{φ}}_{\rm{inert}}} $/% $ {\textit{φ}}_{{{\rm H}_{2}}}\!,{{\textit{φ}}_{\rm{CO}}} $/% ${\textit{φ}}_{\rm{air}} $/% ${\textit{φ}}_{{{\rm H}_{2}}}\!,{{\textit{φ}}_{\rm{CO}}} $/% ${\textit{φ}}_{\rm{air}} $/% ${\textit{φ}}_{{{\rm H}_2}}\!,{{\textit{φ}}_{\rm{CO}}} $/% ${\textit{φ}}_{\rm{air}} $/% ${\textit{φ}}_{{{\rm H}_2}} \!,{{\textit{φ}}_{\rm{CO}}}$/% ${\textit{φ}}_{\rm{air}} $/%
    Φ=0.5 Φ=1.0 Φ=1.5 Φ=2.0
    0 8.68 82.64 14.79 70.42 19.33 61.34 22.83 54.34
    5.00 8.25 78.50 14.05 66.90 18.36 58.28 21.69 51.62
    10.00 7.81 74.38 13.31 63.38 17.39 55.22 20.55 48.90
    15.00 7.38 70.24 12.57 59.86 16.43 52.14 19.41 46.19
    20.00 6.94 66.12 11.83 56.34 15.46 49.08 18.26 43.48
    25.00 6.51 61.98 11.09 52.82 14.49 46.02 17.12 40.76
    下载: 导出CSV

    表  2  添加惰性气体后峰值压力下降值

    Table  2.   Decrease of peak pressure during syngas explosion with inert gas

    Φ惰性气体Δpmax/MPa
    5%10%15%20%25%
    0.5N20.009 370.021 560.042 670.053 650.100 34
    CO20.025 120.051 370.077 720.114 300.153 89
    1.0N20.002 570.011 980.028 530.047 040.062 88
    CO20.019 070.044 820.073 770.104 400.123 47
    1.5N20.012 550.020 560.043 340.073 250.084 23
    CO20.020 110.056 380.096 890.123 860.161 27
    2.0N20.020 050.037 430.057 970.076 60.091 45
    CO20.043 070.070 910.112 810.137 910.143 39
    下载: 导出CSV

    表  3  添加惰性气体后压力到达峰值时间的延迟

    Table  3.   Delay of peak pressure time during syngas explosion with inert gas

    Φ惰性气体ΔT/s
    5%10%15%20%25%
    0.5N20.002 40.007 20.010 00.015 20.027 7
    CO20.004 20.009 40.011 40.024 80.037 6
    1.0N20.004 80.007 80.012 80.018 00.022 0
    CO20.009 40.012 20.015 60.022 20.026 8
    1.5N20.002 60.004 00.007 40.014 00.017 0
    CO20.006 40.009 40.013 20.016 40.019 5
    2.0N20.001 80.004 80.008 60.014 60.017 5
    CO20.007 80.011 20.013 80.015 70.021 2
    下载: 导出CSV

    表  4  添加N2后爆炸指数相比于添加CO2后爆炸指数的差值

    Table  4.   Difference between explosion indexeswith N2 and CO2

    ΦΔK
    5%10%15%20%25%
    0.54.546 125.364 576.455 348.001 463.636 89
    1.05.092 247.546 1210.912 1513.641 2810.909 22
    1.522.727 6624.549 0426.185 9427.276 7223.641 28
    2.04.546 128.183 0219.095 1630.004 3921.822 83
    下载: 导出CSV
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出版历程
  • 收稿日期:  2018-04-19
  • 修回日期:  2018-06-26
  • 网络出版日期:  2019-04-25
  • 刊出日期:  2019-06-01

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