摘要
为研究煤的微观结构对煤的燃烧特性的影响,选取7种典型褐煤,借助热重分析仪、傅里叶变换红外光谱仪对所选煤样进行了结构特征及燃烧特性分析。利用Gaussian峰对褐煤红外光谱谱线进行分峰拟合,以此确定褐煤中官能团的分布、归属及结构特征,从而研究煤样中官能团对其燃烧特性的影响。结果表明:褐煤中芳香烃结构的稳定性较好,活性较低,对煤的着火是不利的;脂肪烃含量影响褐煤燃尽温度,对煤的燃尽不利;含氧官能团、羟基分别能提高褐煤着火后燃烧速度和降低褐煤的活化能,能促进煤的着火燃烧。
in order to study the microstructure of lignite affected to its combustion characteristics,the Thermal Gravimetric Analyzer and Fourier Transform Infrared Spectrometer（ FTIR） were used to analyze the performances of structure and combustion of seven typical lignite samples.The distribution and the structure of functional groups in lignite were obtained through fitting the infrared spectra line by Gaussian peaks. The results show that aromatic structure is stable and activity is low,which is unfavorable for lignite＇s fire.The content of aliphatic hydrocarbons affect the burnout temperature and have a negative effect on coal burning out. The Oxygen containing functional groups and hydroxyl groups can improve the combustion speed and reduce the activation energy of lignite respectively which can promote lignite＇s combustion.
出处
《煤炭科学技术》
CAS
北大核心
2016年第4期169-174,共6页
Coal Science and Technology
基金
国家自然科学基金资助项目(51206012)
关键词
褐煤
官能团
煤燃烧
低阶煤
lignite
functional groups
coal combustion
low rank coal
