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低温热转化过程中煤中典型壳质组的荧光和Micro-FTIR特征

王越 丁华 武琳琳 张宇宏 白向飞 曲思建

王越, 丁华, 武琳琳, 张宇宏, 白向飞, 曲思建. 低温热转化过程中煤中典型壳质组的荧光和Micro-FTIR特征[J]. 燃料化学学报. doi: 10.19906/j.cnki.JFCT.2021025
引用本文: 王越, 丁华, 武琳琳, 张宇宏, 白向飞, 曲思建. 低温热转化过程中煤中典型壳质组的荧光和Micro-FTIR特征[J]. 燃料化学学报. doi: 10.19906/j.cnki.JFCT.2021025
WANG Yue, DING Hua, WU Lin-lin, ZHANG Yu-hong, BAI Xiang-fei, QU Si-jian. The fluorescence and Micro-FTIR characteristics of typical liptinite in low temperature thermal conversion[J]. Journal of Fuel Chemistry and Technology. doi: 10.19906/j.cnki.JFCT.2021025
Citation: WANG Yue, DING Hua, WU Lin-lin, ZHANG Yu-hong, BAI Xiang-fei, QU Si-jian. The fluorescence and Micro-FTIR characteristics of typical liptinite in low temperature thermal conversion[J]. Journal of Fuel Chemistry and Technology. doi: 10.19906/j.cnki.JFCT.2021025

低温热转化过程中煤中典型壳质组的荧光和Micro-FTIR特征

doi: 10.19906/j.cnki.JFCT.2021025
基金项目: 国家重点研发计划(2016YFB0600301)资助
详细信息
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    Tel: 010-84263443,E-mail: wangyue8211@sina.com

  • 中图分类号: P618

The fluorescence and Micro-FTIR characteristics of typical liptinite in low temperature thermal conversion

Funds: The project was supported by the National Key Research and Development Program of China (2016YFB0600301)
  • 摘要: 煤中壳质组的种类及含量对热解焦油、煤气产率有重要的影响。综合利用显微镜热台、荧光显微分析和显微傅里叶红外光谱(Micro-FTIR)研究煤中典型壳质组的低温热转化( ≤ 450 ℃)特性。结果表明,随着温度升高,煤中壳质组分的相对荧光强度降低,最大荧光波长增大;树脂体和木栓质体的荧光特性在240 ℃开始变化,280−320 ℃变化显著;孢粉体、角质体和沥青质体A的荧光特性在280 ℃开始变化,320−360 ℃变化显著;藻类体的荧光特性从280 ℃开始变化,并持续到400 ℃;沥青质体B的荧光变化出现在320−360 ℃。藻类体的脂肪化合物的吸收峰最强,其次为沥青质体、树脂体、角质体和孢粉体;随着温度升高,壳质组的脂肪族和含氧基团逐渐减少,芳香烃含量相对增加。煤中壳质组分芳构化程度低,在低温热转化过程中基本保持不变;壳质组的富氢程度及脂肪化合物变化特征与荧光特性的变化基本一致。
  • 图  1  显微镜热台示意图

    Figure  1.  Diagram of the heating stage microscope

    图  3  不同热转化温度下孢粉体的荧光特性

    Figure  3.  Fluorescence properties of sporinite in low temperature thermal conversion

    图  2  低温热转化过程中壳质组的荧光性质变化

    Figure  2.  Fluorescence properties of typical liptinite in low temperature thermal conversion

    图  4  不同热转化温度下角质体的荧光特性

    Figure  4.  Fluorescence properties of cutinitein low temperature thermal conversion

    图  5  不同热转化温度下树脂体的荧光特性

    Figure  5.  Fluorescence properties of resinite in low temperature thermal conversion

    图  6  不同热转化温度下木栓质体的荧光特性

    Figure  6.  Fluorescence properties of suberinite in low temperature thermal conversion

    图  7  不同热转化温度下沥青质体的荧光特性

    Figure  7.  Fluorescence properties of bituminite in low temperature thermal conversion

    图  8  不同热转化温度下藻类体的荧光特性

    Figure  8.  Fluorescence properties of alginite in low temperature thermal conversion

    图  9  不同温度下各种壳质组分的Micro-FTIR谱图

    Figure  9.  Micro-FTIR spectrogram of typical liptinite in low temperature thermal conversion

    图  10  煤中典型壳质组的Micro-FTIR光谱特征参数随温度变化规律

    Figure  10.  Characteristic Micro-FTIR parameters of typical liptinite in low temperature thermal conversion

    表  1  实验样品的基本煤质特征

    Table  1.   Basic characteristics of the sample

    Proximate analysis w/%Ultimate analysis wdaf/%
    MadAdVdafFCdCHNSO*
    2.574.0538.2059.2982.225.050.940.3911.40
    St,d/%Calorific value/(MJ·kg−1)GR.IGray-King assay
    Qgr,dQnet,arwaterad/%CRad/%tarad/%coketypeloss/%
    0.3732.0529.9906.071.612.7C9.7
    *:by difference
    下载: 导出CSV

    表  2  实验样品的煤岩特征

    Table  2.   Petrographic characteristics of the sample

    Maceralgroup (vol, mineral free)Romax/%
    VitriniteInertiniteLiptinite
    56.438.84.8SpCuReSubBtAlg
    1.21.00.80.60.80.40.56
    Sp: Sporinite; Cu: Cutinite; Re: Resinite; Sub: Subernite;
    Bt: Bituminite; Alg: Alginite; Romax: maximum reflectance of vitrinite
    下载: 导出CSV
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  • 收稿日期:  2020-11-26
  • 修回日期:  2020-12-22
  • 网络出版日期:  2021-03-30

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