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首页> 外文期刊>Combustion Science and Technology >The Study on Oxidation Characteristics and Spontaneous Combustion Micro-Structure Change of Unloading Coal under Different Initial Stress
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The Study on Oxidation Characteristics and Spontaneous Combustion Micro-Structure Change of Unloading Coal under Different Initial Stress

机译：不同初始应力下卸载煤的氧化特性及自发燃烧微结构变化研究

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摘要

To study the oxidation characteristics and spontaneous combustion micro-evolution characteristics of coal unloaded under different initial stress, in this paper, a comparative study on the micro-oxidation characteristics of the raw coal samples with easy spontaneous combustion and the unloaded coal samples under different initial stress was carried out by using the temperature-programmed experiment, the three axial creep test of coal rock, and the mercury injection experiment. The findings indicate that in the macroscopic aspects, the unloaded coal under different initial stresses is easier to oxidize than the raw coal sample. The CO production-strain curve of the experimental coal samples is similar to the axial stress-strain curve; when the initial stress reaches 25 MPa, the coal sample is in the stage of strain softening and the oxidation capacity of coal sample is the strongest. The infrared spectra of FTIR are analyzed, and the dynamic changes characteristics of microactive groups such as aromatic hydrocarbons, aliphatic hydrocarbons, and oxygen-containing functional groups under different initial stress are mastered. The microscopic spontaneous combustion mechanism of unloading coal under different stress is obtained.
机译：为了研究不同初始应力下卸载煤的氧化特性和自发燃烧微展管特性，本文对易于自燃和卸载煤样品的原煤样品微氧化特性的比较研究通过使用温度编程的实验，煤岩的三个轴向蠕变试验和汞注射实验进行应力。结果表明，在宏观方面，在不同初始应力下的卸载煤比原煤样品更容易氧化。实验煤样品的CO生产 - 应变曲线类似于轴向应力 - 应变曲线;当初始应力达到25MPa时，煤样在应变软化的阶段，煤样的氧化能力是最强的。分析了FTIR的红外光谱，并且施加了在不同初始应力下诸如芳烃，脂族烃和含氧官能团如芳族烃，脂族烃和含氧官能团的动态变化。获得在不同应力下卸载煤的微观自发燃烧机理。

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  • 来源
    《Combustion Science and Technology》 |2020年第6期|1053-1065|共13页
  • 作者

    Pan Rongkun; Li Cong; Fu Dong; Xiao Zejun; Jia Hailin;

  • 作者单位

    Henan Polytech Univ Dept Safety & Sci Engn Jiaozuo Henan Peoples R China|Henan Polytech Univ Collaborat Innovat Ctr Coal Safety Prod Henan Pro Jiaozuo Henan Peoples R China|Henan Key Lab Prevent & Cure Mine Methane & Fires Jiaozuo Henan Peoples R China;

    Henan Polytech Univ Dept Safety & Sci Engn Jiaozuo Henan Peoples R China;

    Henan Polytech Univ Dept Safety & Sci Engn Jiaozuo Henan Peoples R China;

    Henan Polytech Univ Dept Safety & Sci Engn Jiaozuo Henan Peoples R China;

    Henan Polytech Univ Dept Safety & Sci Engn Jiaozuo Henan Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Deep mining; spontaneous combustion; oxidation characteristic; FTIR; microactive structure;

    机译：深矿物;自发燃烧;氧化特性;FTIR;微动结构;

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