Notice：
News: Another formal entry in international databases! 2023-02-08 Good news! Journal of Mining Science and Technology is included by Scopus database! 2022-03-22
Volume 2 Issue 2
. 
Turn off MathJax
Article Contents
Article Navigation >  Journal of Mining Science and Technology  > 2017  >  2(2): 150-157
Guo Zhiguo, Wu Bing. Comparative study on the fire-extinguishing effectiveness of N2 and CO2 on coal flame combustion[J]. Journal of Mining Science and Technology, 2017, 2(2): 150-157.
Citation: Guo Zhiguo, Wu Bing. Comparative study on the fire-extinguishing effectiveness of N2 and CO2 on coal flame combustion[J]. Journal of Mining Science and Technology, 2017, 2(2): 150-157.
shu

Comparative study on the fire-extinguishing effectiveness of N2 and CO2 on coal flame combustion

  • College of Resources and Safety Engineering,China University of Mining and Technology,Beijing 100083,China

  • Received Date: 2016-07-01
  • Publish Date: 2017-04-29
    Abstract
  • In order to master thoroughly the different fire-extinguishing effects of N2 and CO2 on coal flame combustion,the self-developed experiment device of coal flame combustion was used to conduct the fire-extinguishing experiment on coal flame combustion under the condition of importing same flux N2 and CO2 gas fire-extinguishing agent for coal samples in Eight mine of Ping Dingshan coal mine,and the change laws of temperature of temperature field,index gas formation(O2,CO and CH4),heat release rate and flame image area obtained from the experimental stages of the coal flame combustion and smoldering extinguished were measured,The results show that:compared to the free combustion of coal,in coal flame combustion stage,flame out time,coal temperature rise rate,oxygen consumption,heat release rate as well as the speed of CO and CH4 concentration decline in coal combustion with CO2 much lower than that of coal combustion with N2;meanwhile,the flame image area exponentially decline in coal combustion with CO2,but the flame image area linearly decreases in coal combustion with N2,In the coal smoldering extinguishes stage,the coal temperature,the speed of CO and CH4 concentration decline in the coal combustion with CO2 much higher than that of coal combustion with N2,but the oxygen consumption and heat release rate are lower,It follows that CO2 has greater capacity of extinguishing coal combustion compared to N2.
    • FullText(HTML)
  • loading
    • References(22)
  • [1]
    曹凯,司卫彬,王德明.急倾斜特厚煤层采空区煤自燃治理关键技术研究[J].煤炭科学技术,2015,43(11):64-67.
    [2]
    Cao Kai,Si Weibin,Wang Deming.Study on key technology of coal spontaneous combustion control in steeply inclined ultra thick seam goaf[J].Coal Science and Technology,2015,43(11):64-67.
    [3]
    王德明.煤氧化动力学理论及应用[M].北京:科学出版社,2012.
    [4]
    Hu Xincheng,Yang Shengqiang,Zhou Xiuhong,et al.Coal spontaneous combustion prediction in gob using chaos analysis on gas indicators from upper tunnel[J].Journal of Natural Gas Science and Engineering,2015,26(2):461-469.
    [5]
    王德明.矿井火灾学[M].徐州:中国矿业大学出版社,2008.
    [6]
    Wang Deming,Dou Guolan,Zhong Xiaoxing.An experimental approach to selecting chemical inhibitors to retard the spontaneous combustion of coal[J].Fuel,2014,117(1):218-223.
    [7]
    张进军,昝军才.惰性液态CO2防灭火工艺及实践[J].煤矿安全,2011,42(3):88-90.
    [8]
    Zhang Jinjun,Zan Juncai.Technology and practice of fire prevention and control of inert liquid CO2 [J].Coal Mine Safety,2011,42(3):88-90.
    [9]
    刘少南.CO2浓度对煤低温氧化影响的实验研究[J].煤炭科学技术,2014,42(S1):149-151.
    [10]
    Liu Shaonan.Experimental study on CO2 concentration affected to low temperature coal oxidation[J].Coal Science and Technology,2014,42(S1):149-151.
    [11]
    鲍庆国.煤自燃理论及防治技术[M].北京:煤炭工业出版社,2002.
    [12]
    王振平,马砺,文虎,等.CO2与N2抑制煤炭氧化自燃对比实验研究[J].煤矿安全,2010,40(2):10-13.
    [13]
    Wang Zhenping,Ma Li,Wen Hu,et al.A experiment contrast study of CO2 and N2 inhibited oxidation of spontaneous combustion of coal[J].Safety in Coal Mines,2010,40(2):10-13.
    [14]
    邵昊,蒋曙光,吴征艳,等.二氧化碳和氮气对煤自燃性能影响的对比实验研究[J].煤炭学报,2014,39(11):2244-2249.
    [15]
    Shao Hao,Jiang Shuguang,Wu Zhengyan,et al.Comparative research on the influence of dioxide carbon and nitrogen on performance of coal spontaneous combustion[J].Journal of China Coal Society,2014,39(11):2244-2249.
    [16]
    Orloff L.Simplified radiation modeling of pool fires [J].Symposium on Combustion,1981,18(1):549-561.
    [17]
    Janssens M L.Measuring rate of heat release by oxygen consumption[J].Fire Technology,1991,27(3): 234-249.
    [18]
    孙金华,王青松,纪杰,等.火焰精细结构及其传播动力学[M].北京:科学出版社,2011.
    [19]
    Battistutta E,Hemert P V,Marcinl L,et al.Swelling and sorption experiments on methane,nitrogen and carbon dioxide on dry selar cornish coal[J].International Journal of Coal Geology,2010,84(1):39-48.
    [20]
    吴仕生,曾玺,任明威,等.含氧/蒸汽气氛中煤高温分解产物分布及反应性[J].燃料化学学报,2012,40(6):660-665.
    [21]
    Wu Shisheng,Zeng Xi,Ren Mingwei,et al.Product distribution and reactivity of coal pyrolysis at high temperature and in atmospheres containing O2/steam [J].Journal of Fuel Chemistry and Technology,2012,40(6):660-665.
    [22]
    张德丰.MATLAB数字图像处理[M].北京:机械工业出版社,2009.
    • Relative Articles
    • Supplements(0)
    • Cited By
  • 加载中

Catalog

    通讯作者: 陈斌, bchen63@163.com
    • 1. 

      沈阳化工大学材料科学与工程学院 沈阳 110142

    1. 本站搜索
    2. 百度学术搜索
    3. 万方数据库搜索
    4. CNKI搜索
    Get Citation
    PDF
    XML

    Article Metrics

    Article views (755) PDF downloads(270) Cited by()
    Proportional views

    Beijing ICP backup 05066826

    Address： Office Building 3, China University of Mining and Technology (Beijing), No. 11, Xueyuan Road, Haidian District, Beijing

    Tel： 010-62339662, 010-62339897, 010-62339528Email： kykxxb@cumtb.edu.cn

    Supported by: Beijing Renhe Information Technology Co. Ltd  

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return