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胜利褐煤及盐酸洗煤热解过程中微结构演变特性研究

宋银敏 滕英跃 李娜 何润霞 刘全生 王云飞

宋银敏, 滕英跃, 李娜, 何润霞, 刘全生, 王云飞. 胜利褐煤及盐酸洗煤热解过程中微结构演变特性研究[J]. 燃料化学学报, 2021, 49(4): 415-421. doi: 10.1016/S1872-5813(21)60023-3
引用本文: 宋银敏, 滕英跃, 李娜, 何润霞, 刘全生, 王云飞. 胜利褐煤及盐酸洗煤热解过程中微结构演变特性研究[J]. 燃料化学学报, 2021, 49(4): 415-421. doi: 10.1016/S1872-5813(21)60023-3
SONG Yin-min, TENG Ying-yue, LI Na, HE Run-xia, LIU Quan-sheng, WANG Yun-fei. Microstructural evolution during pyrolysis of Shengli lignite and hydrochloric acid-demineralized lignite[J]. Journal of Fuel Chemistry and Technology, 2021, 49(4): 415-421. doi: 10.1016/S1872-5813(21)60023-3
Citation: SONG Yin-min, TENG Ying-yue, LI Na, HE Run-xia, LIU Quan-sheng, WANG Yun-fei. Microstructural evolution during pyrolysis of Shengli lignite and hydrochloric acid-demineralized lignite[J]. Journal of Fuel Chemistry and Technology, 2021, 49(4): 415-421. doi: 10.1016/S1872-5813(21)60023-3

胜利褐煤及盐酸洗煤热解过程中微结构演变特性研究

doi: 10.1016/S1872-5813(21)60023-3
基金项目: 国家自然科学基金(21766023),内蒙古自然科学基金(2018BS02007,2019MS02025,2020MS02023),内蒙古科技计划项目(2019GG268,2020GG0289),内蒙古工业大学科学研究项目(ZZ201906)和2020年中央引导地方科技发展资金(2020ZY0032)资助
详细信息
    作者简介:

    宋银敏: E-mail: songyinmin@126.com

    通讯作者:

    Tel: 13847167299,E-mail: tengyingyue@163.com

    Tel: 13664740405, E-mail: liuqs@imut.edu.cn

  • 中图分类号: TQ530.2

Microstructural evolution during pyrolysis of Shengli lignite and hydrochloric acid-demineralized lignite

Funds: The project was supported by the National Natural Science Foundation of China (21766023),Natural Science Foundation of Inner Mongolia (2018BS02007,2019MS02025,2020MS02023),Plan of Scientific and Technology of Inner Mongolia (2019GG268,2020GG0289),Science Foundation of Inner Mongolia Technology University (ZZ201906),Science and Technology Development Fund of Central Guide Place in 2020 (2020ZY0032)
  • 摘要: 利用固定床获得胜利褐煤及盐酸洗煤在不同温度条件下的半焦。利用FT-IR、XPS、XRD和Raman等技术对所得半焦进行表征,以研究胜利褐煤及盐酸洗煤热解过程中微结构演变特性。结果表明,盐酸洗煤/焦中含氧结构含量相对较高。随热解温度升高,煤/焦中含氧结构所占比例降低。褐煤热解过程中,盐酸洗脱的矿物质会抑制芳环的有序化排列,同时促进褐煤中芳环簇的缩聚,造成煤焦晶体结构缺陷增加,并对煤焦中侧链的发展不利。
  • FIG. 604.  FIG. 604.

    FIG. 604..  FIG. 604.

    图  1  胜利褐煤及盐酸洗煤半焦的红外光谱谱图

    Figure  1.  FT-IR spectra of chars from SL and SL+

    a: SL; b: SL+; c: SL-300; d: SL+-300; e: SL-500; f: SL+-500; g: SL-700; h: SL+-700 ①: 3400 cm−1; ②: 2918 cm−1; ③: 2837 cm−1; ④: 1708 cm−1; ⑤: 1600 cm−1; ⑥: 1441 cm−1; ⑦: 1366 cm−1; ⑧: 1105 cm−1; ⑨: 1037 cm−1; ⑩: 770 cm−1

    图  2  胜利褐煤及盐酸洗煤半焦的XPS谱图及C 1s拟合示意图

    Figure  2.  XPS spectra and C 1s fitted curves of chars from SL and SL+

    a: SL; b: SL+; c: SL-300; d: SL+-300; e: SL-500; f: SL+-500; g: SL-700; h: SL+-700

    图  3  胜利褐煤及盐酸洗煤半焦的XRD谱图及拟合示意图

    Figure  3.  XRD spectra and fitted curves of chars from SL and SL+

    a: SL; b: SL+; c: SL-300; d: SL+-300; e: SL-500; f: SL+-500; g: SL-700; h: SL+-700

    图  4  胜利褐煤及盐酸洗煤半焦的Raman谱图及拟合示意图

    Figure  4.  Raman spectra and fitted curves of chars from SL and SL+

    a: SL; b: SL+; c: SL-300; d: SL+-300; e: SL-500; f: SL+-500; g: SL-700; h: SL+-700

    图  5  胜利褐煤及盐酸洗煤半焦Raman谱拟合参数

    Figure  5.  Raman spectra fitted parameters of chars from SL and SL+

    a: chars from SL; b: chars from SL+

    表  1  煤样的工业分析和元素分析

    Table  1.   Proximate analysis and ultimate analysis of coal samples

    SampleProximate wd/% Ultimate analysis wdaf/%
    AVFCCHNSO*
    SL13.933.452.757.63.580.891.8122.2
    SL+7.5039.852.761.43.340.861.7425.2
    note: d- dried basis; M- moisture; A- ash content;
    V- volatile content; FC- fixed carbon; *- by difference
    下载: 导出CSV

    表  2  煤样中金属组分分布

    Table  2.   Percentage of metal components in coal samples

    Sample Content w/%
    AlNaCaSiFeMn
    SL2.400.580.413.110.110.08
    SL+0.900.000.012.890.030.03
    下载: 导出CSV

    表  3  焦样的工业分析和元素分析

    Table  3.   Proximate analysis and ultimate analysis of char samples

    SampleProximate wd/%ultimate analysis wdaf/%
    AVFCCHNSO*
    SL-30013.327.359.461.63.540.911.5419.1
    SL-50015.615.668.869.42.711.041.279.98
    SL-70017.83.6078.670.11.591.011.517.99
    SL+-3006.0023.170.966.14.760.881.6520.6
    SL+-5008.3014.577.271.71.971.030.9616.0
    SL+-7008.643.8687.574.32.441.051.5812.0
    note: d- dried basis; A- ash content; V- volatile content; FC- fixed carbon; *- by difference
    下载: 导出CSV

    表  4  胜利褐煤及盐酸洗煤半焦的XPS C 1s拟合结果

    Table  4.   XPS C 1s fitted results of chars from SL and SL+ (%)

    SampleC−C/C−HC−O−C=OCOO−
    SL86.65.45.12.9
    SL-30089.79.11.70.5
    SL-50092.74.72.30.3
    SL-70094.44.50.40.7
    SL+71.216.84.57.5
    SL+-30079.112.15.03.8
    SL+-50087.18.03.01.9
    SL+-70087.57.53.21.8
    下载: 导出CSV

    表  5  胜利褐煤及盐酸洗煤半焦的晶体结构参数

    Table  5.   Crystalline structure parameters of chars from SL and SL+

    Samplefad002/nmLc/nmLa/nmN
    SL0.3080.35860.98160.89333.74
    SL-3000.3320.36400.85580.92963.35
    SL-5000.3440.36550.76401.02013.09
    SL-7000.3630.35970.83131.46243.31
    SL+0.3320.36800.78940.53163.14
    SL+-3000.3570.37910.79090.80743.09
    SL+-5000.3620.36600.84790.75313.32
    SL+-7000.3650.36290.87140.99823.40
    note: fa-aromaticity; d002- interlayer space; Lc-degree of stacking of aromatic layers; La-aromatic layer size; N-the number of aromatic layer, N = Lc/ d002 + 1
    下载: 导出CSV
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出版历程
  • 收稿日期:  2020-10-14
  • 修回日期:  2020-12-25
  • 网络出版日期:  2021-03-30
  • 刊出日期:  2021-04-10

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