煤矿安全2024，Vol.55Issue(6)：91-99,9.DOI:10.13347/j.cnki.mkaq.20230966
煤矸石低温氧化官能团演化与气体相关性分析
Functional group evolution and gas correlation analysis of low temperature oxidation of coal gangue
李绪萍 1李直 1任晓鹏 1张靖 1刘艳青 2周琛鸿1
作者信息
- 1. 内蒙古科技大学 矿业与煤炭学院,内蒙古 包头 014010
- 2. 包钢勘察测绘研究院,内蒙古 包头 014010
- 折叠
摘要
Abstract
In order to study the transformation law of active functional groups in the low-temperature oxidation process of coal gangue spontaneous combustion and its relationship with gas release,the experimental system composed of Fourier transform in-frared spectrometer and programmed temperature control device was used to analyze the spectral experimental data of coal gangue samples at 30-350 ℃ in air atmosphere.The Spearman method was used to study the correlation between gas release and functional groups.The results showed that the content of hydroxyl groups in the spontaneous combustion process showed an overall upward trend,the content of aliphatic hydrocarbons in the oxidation reaction was high and the reaction was active,and the oxygen-contain-ing functional groups were affected by aliphatic hydrocarbons in the oxidation.The amount of CH4 gas released increases with the increase of aliphatic hydrocarbon-CH2-,substituted aromatic hydrocarbon C-H and hydroxyl content.CO gas increases with the in-crease of carbonyl and aromatic hydrocarbon C-H content,and decreases with the increase of oxygen-containing functional group content.The release of CO2 gas during oxidation mainly increases with the increase of hydroxyl and carbonyl content,showing a very high correlation.关键词
煤矸石自燃/低温氧化/活性官能团/气体析出/关联分析Key words
coal gangue spontaneous combustion/low-temperature oxidation/active functional group/gas precipitation/correlation analysis分类
矿业与冶金引用本文复制引用
李绪萍,李直,任晓鹏,张靖,刘艳青,周琛鸿..煤矸石低温氧化官能团演化与气体相关性分析[J].煤矿安全,2024,55(6):91-99,9.
