【作者】 王雪峰；

【导师】 单亚飞；

【作者基本信息】 辽宁工程技术大学 ， 安全技术及工程， 2007， 硕士

【摘要】 本论文利用傅立叶红外光谱仪对煤的分子结构、煤在氧化自燃过程中不同温度下煤的化学键、官能团变化规律以及生成的标志性气体进行研究,揭示煤氧化自燃的机理。选取大同矿区的29种不同矿井、不同煤层的煤样进行实验分析。本论文通过对煤的氧化自燃过程的红外光谱研究,总结前人经验建立煤的分子结构模型,采用量子化学计算方法,对构建的煤分子化学基本结构单元进行了优化。理论计算的煤分子结构中官能团的频率与应用红外光谱实验得到的频率基本一致,证明所建立的煤分子结构是正确的。并通过实验研究煤氧化自燃生成指标性气体的浓度与温度的关系,利用建立的组元成分预报模型可以良好的预报对应组元的浓度,对于判定井下煤炭着火温度,着火严重程度,预测井下火灾的发生有着重要意义。更多还原

【Abstract】 The thesis uses the Fourier infrared spectroscope to study the coal molecular structure, coal molecular chemical bond, functional group change rule in oxidized spontaneous combustion process under different temperature as well as the target gas. In order to reveal the coal spontaneous combustion mechanism.Selects 29 kinds of coal samples in different mine pits, different coal bed at Datong mining area carries on the experiment to analyze. The thesis through conducts the infrared spectrum research to the coal spontaneous combustion process, summarizes the predecessor’s experience establishes the coal molecular structure model, uses the quantum chemistry computational method, optimized the coal molecular structure. The coal molecular functional group frequency obtains from the infrared spectrum experiment is basically consistent to the one obtains from the theoretical calculation, which proves that the established coal molecular structure is correct.And through the experiment, studies the relations between density and the temperature of coal spontaneous combustion target gas, uses the established components forecast model could well forecast the relevant components’density. It has a vital significance to the determination of the coal ignition temperature and the combustion serious degree, and to the spontaneous combustion fire forecast in the mine.更多还原