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›› 2014, Vol. 14 ›› Issue (6): 984-988.

• 过程与工艺 • 上一篇    下一篇

低阶煤显微组分对混煤热解过程含氧官能团析出及转移规律的影响

高志芳 张更 郑明东 张晓勇 张代林   

  1. 安徽工业大学安徽省冶金工程与资源综合利用重点实验室 安徽工业大学化学与化工学院 安徽工业大学环境工程系 安徽工业大学化学与化工学院 安徽工业大学化学与化工学院
  • 收稿日期:2014-09-01 修回日期:2014-10-22 出版日期:2014-12-20 发布日期:2014-12-20
  • 通讯作者: 高志芳

Effects of Low-rank Coal Macerals on Evolution of Oxygen Functional Groups in Pyrolysis of Mixed Coals

GAO Zhi-fang ZHANG Geng ZHENG Ming-dong ZHANG Xiao-yong ZHANG Dai-lin   

  1. Anhui University of Technology, Anhui Provincial Key Lab of Metallurgy Engineering ＆Resources Recyclin Chemical Engineering Department，Anhui University of Technology Environment department of Anhui university of technology, Ma'nshan Chemical Engineering Department，Anhui University of Technology Chemical Engineering Department，Anhui University of Technology
  • Received:2014-09-01 Revised:2014-10-22 Online:2014-12-20 Published:2014-12-20
  • Contact: GAO Zhi-fang

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摘要： 采用化学滴定法，结合傅里叶红外分析，研究低阶煤显微组分对混煤含氧官能团析出及转移规律的影响，分析低阶煤镜质组分和惰质组分对混煤含氧官能团交互作用及析出转移规律的影响. 结果表明，混煤中酚、醇、醚、酯的C-O含氧官能团在热解温度达600℃时脱除达到基本稳定；400~600℃析氧率逐渐增加，之后稳定在30%左右，700℃后氧析出完全. 加入低阶煤使混煤热解过程中氢流失少于氧流失，有利于提高胶质体质量.

关键词: 低阶煤, 含氧官能团, 镜质组分, 惰质组分, 热解

Abstract: The chemical titration method combined with FT-IR analysis was used to study the effects of low rank coal macerals on the evolution of oxygen functional groups of coals and metastasis by analysis of different proportions, and the interactions of low rank coal vitrinite and inertinite with mixed coal containing functional group. The results showed that the phenol, alcohol, ether, ester C-O oxygen-containing functional groups of mixed coal reached a steady state when the pyrolysis temperature was 600℃, and the oxygen evolution rate increased at 400~600℃, then tended to be stable at about 30%. When the pyrolysis temperature was 700℃, oxygen precipitation was completed. Moreover, the addition of low rank coal macerals into fat coal would reduce the proportion of hydrogen less than the loss of oxygen of mixed coal in pyrolysis process, which was beneficial to improvement of the colloid quality.

Key words: low rank coal, oxygen functional group, vitrinite, inertinite, pyrolysis

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