标题：The researches on micro influencing factors of Huainan lignite spontaneous combustion based on FTIR
作者：Fu, Haizheng ;Xie, Jun ;Song, Yue ;Xin, Lin
作者机构：[Fu, Haizheng ;Xie, Jun ;Song, Yue ;Xin, Lin ] Shandong University of Science and Technology, Qingdao, Shandong Province, China
会议名称：7th Academic Conference of Geology Resource Management and Sustainable Development, GRMSD 2019
来源：Proceedings of the 7th Academic Conference of Geology Resource Management and Sustainable Development
关键词：FTIR (Fourier-transform infrared spectroscopy); Lignite; Microstructure; Oxidation; Spontaneous combustion
摘要：In view of the problem that lignite is easy to self ignite in Huainan Mining Bureau, the rapid self heating process of lignite from low temperature oxidation to self ignition is simulated by constant temperature heating and temperature rising, and the change of chemical structure in the self heating process of lignite oxidation is compared and analyzed with FTIR. Through the preparation of coal samples with different oxidation temperature, the infrared spectrum method was used to study the difference spectrum analysis of the infrared spectrum, and the change rule of each group in the process of oxygen rising of lignite was obtained, and the active order of each group which affected the oxygen compound reaction of lignite was carried out. According to the infrared spectrum analysis of raw coal samples and oxidized coal samples at different temperatures, the hydroxyl group did not affect Huaihe River The main functional groups of lignite combustion in South Mining Bureau are methyl (-CH3), methylene (-CH2), carboxyl (-COOH), aromatic ether oxygen bond (Ar-O-C) and ether bond (C-O-C), which are active and participate in oxidation reaction. They are the main substances that cause lignite spontaneous combustion. © copyright 2019 by Aussino Academic Publishing House.