| 管道内甲烷煤尘复合火焰结构的实验 |
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| 引用本文： | 刘义,孙金华,陈东梁.管道内甲烷煤尘复合火焰结构的实验[J].中国科学技术大学学报,2006,36(1):65-68. |
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| 作者姓名： | 刘义 孙金华 陈东梁 |
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| 作者单位： | 中国科学技术大学火灾科学国家重点实验室,安徽合肥,230027 |
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| 基金项目： | 中国科学院资助项目;国家高技术研究发展计划(863计划) |
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| 摘 要： | 对管道中甲烷煤尘复合火焰结构进行了初步研究．采用高速摄像系统拍摄了甲烷煤尘复合火焰在垂直管道内传播过程的自发光图片；采用微细热电偶和离子探针技术分别测量了火焰传播过程中的温度分布和化学反应区的强度分布．研究结果表明：管道内甲烷煤尘复合火焰化学反应区的厚度约为15．6cm，比单一甲烷空气预混火焰的化学反应区厚度要大两个量级．
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| 关 键 词： | 火焰结构 瓦斯 煤尘 燃烧 |
| 文章编号： | 0253-2778(2006)01-0065-04 |
| 收稿时间： | 11 3 2005 12:00AM |
| 修稿时间： | 12 8 2005 12:00AM |
Experiment on flame structure of hybrid coal dust and methane in tube |
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| LIU Yi,SUN Jin-hua,CHEN Dong-liang.Experiment on flame structure of hybrid coal dust and methane in tube[J].Journal of University of Science and Technology of China,2006,36(1):65-68. |
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| Authors: | LIU Yi SUN Jin-hua CHEN Dong-liang |
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| Institution: | State Key Laboratory of Fire Science, USTC, Hefei 230027, China |
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| Abstract: | To investigate the flame structure of the hybrid coal dust and methane in the tube, a high speed camera was used to record self-luminance pictures of the flame propagation process in the vertical tube. The fine thermocouple was introduced to measure the flame temperature. The ion probe was used to measure the intensity of the reaction zone. The results show that the reaction zone thickness of the hybrid coal dust and methane flame is 15.6 cm, which is two times magnitude that of single methane-air premixed flame. |
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| Keywords: | flame structure gas coal dust combustion |
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