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Pyrolysis of coal group component. Part Ⅰ. Emission characteristics and product distribution of saturate component

Author

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  • Jiang, Yuan
  • Zong, Peijie
  • Tian, Bin
  • Ming, Xue
  • Xu, Fanfan
  • Tian, Yuanyu
  • Qiao, Yingyun
  • Li, Dawei
  • Song, Qingshuo
  • Yu, Qiankun

Abstract

Studying pyrolysis behavior of saturate component is significant to understand the pyrolysis behaviors of coal, as the component can produce volatile matters. The combined utilization of TG-FTIR and Py-GC/MS provides a feasible strategy for investigating pyrolysis behaviors of saturate component. The results of TG-FTIR show that the pyrolysis of saturate component contains one stage. The yield of coal-char at different heating rates is quite low (0.04–0.50 wt%) and the values are close to each other, which indicates that the pyrolysis of saturate component has almost no coal-char and the saturate component mainly consists of volatile substances. Furthermore, the change in absorbance of typical compounds in FTIR indirectly reflects the variety in the content of compounds. The detailed information of pyrolysis products is analyzed by Py-GC/MS, which shows that alkanes and alkenes are dominant. Moreover, the change in the content of alkanes and alkenes is opposite. The pyrolysis mechanism of saturate component belongs to free radical reaction. The possible pyrolysis pathway of saturate component is presented and the appearance of hexane and hexene is also verified. This research provides a methodological model for exploring other group components and reveals more specific details for the pyrolysis of coal.

Suggested Citation

  • Jiang, Yuan & Zong, Peijie & Tian, Bin & Ming, Xue & Xu, Fanfan & Tian, Yuanyu & Qiao, Yingyun & Li, Dawei & Song, Qingshuo & Yu, Qiankun, 2021. "Pyrolysis of coal group component. Part Ⅰ. Emission characteristics and product distribution of saturate component," Energy, Elsevier, vol. 216(C).
    • Handle: RePEc:eee:energy:v:216:y:2021:i:c:s0360544220322659
    DOI: 10.1016/j.energy.2020.119158
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    1. Ma, Cheng & Zhao, Yuzhen & Lang, Tingting & Zou, Chong & Zhao, Junxue & Miao, Zongcheng, 2023. "Pyrolysis characteristics of low-rank coal in a low-nitrogen pyrolysis atmosphere and properties of the prepared chars," Energy, Elsevier, vol. 277(C).
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    3. Che, Yuanjun & Shi, Kunmou & Cui, Zihang & Liu, Hongchen & Wang, Qian & Zhu, Wei & Tian, Yuanyu, 2023. "Conversion of low temperature coal tar into high value-added chemicals based on the coupling process of fast pyrolysis and catalytic cracking," Energy, Elsevier, vol. 264(C).

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