加热作用对褐煤自燃过程影响的红外光谱研究 .pdfVIP

学兔兔 2012年第3期 煤 炭 工 程 加热作用对褐煤自燃过程影响的红外光谱研究 许 涛，辛海会，王德明 (中国矿业大学安全工程学院，江苏徐州 221008) 摘 要：利用原位傅里叶红外光谱仪实时在线~,liL了褐煤分别在通入氮气和氧气的程序升温 条件下主要活性官能团的变化规律，通过对比分析研究了程序升温的加热作用对煤氧化过程产生 的影响。结果表明：在这两种气氛条件下各主要活性官能团都呈现先减少后逐渐增加的连续变化 趋势；仅靠程序升温的加热作用也会导致煤自身发生反应，但是加热作用对煤中官能团变化的影 响与氧化条件下的影响趋势是一致的。 关键词：原位红外光谱；热作用；官能团；煤自燃；褐煤 中图分类号：TQ534 文献标识码：A 文章编号：1671—0959(2012)03-0087-03 Study on Heating Effect of Infrared Spectrum Affected to Lignite Spontaneous Combustion Process XU Tao，XI Hai—hui，WANG De—ming (School of Safety Engineering，China University of Mining and Technology，Xuzhou 221008，China) Abstract：The insitu Fourier infrared spectrograph was applied to real time on line measurements on the variation law of the main activated functional group of lignite under the nitrogen and oxygen programmed temperature rising condition．With the comparison and analysis，the heating role of the programmed temperature rising affected to the coal oxidization process was studied．The results showed that under those two gas condition，each main functional group would have a continued variation tendency with first reduction and then steadily increased．The only heating role of the programmed temperature rising would cause the coal self to be reacted．But the heating role would have a same to the variation of the functional group in coaland the influence tendency under oxidization condition． Keywords：in—situ infrared spectrum；heating effect；functional group；coal spontaneous combustion；lignite 早在l7世纪起人们就开始研究煤的自燃现象，并且通 下程序升温过程中官能团的变化对比，揭示褐煤在低温氧 过不同实验手段对煤的自燃过程进行研究。绝热氧化法是 化过程中外在加热条件对煤氧化的影响。 能够真实反映煤自燃