Coal spontaneous combustion (CSC) has been endangering the safety of the coal industry. Spontaneous combustion of coal may lead to coal seam combustion and gas explosions in coal mines, causing a lot of damage. At the same time, CSC will produce a large amount of carbon dioxide, which seriously endangers the ecological environment. Therefore, what reduces the spontaneous combustion of coal is necessary. Ionic liquid (IL) is a new kind of green organic solvent. It has the characteristics of good stability and can be used as a flame retardant for CSC. In this study, 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide (Bmim[Ntf2]) was selected as the flame retardant of bituminous coal spontaneous combustion, where thermal stability of bituminous coal treated by Bmim[Ntf₂] and raw bituminous coal was studied by the simultaneous thermogravimetric analyzer. The apparent activation energy was calculated by the FWO method. The decomposition gas products of bituminous coal and bituminous coal treated with Bmim[Ntf₂] were analyzed by Fourier-transformed infrared spectrometer to investigate the effect of intramolecular hydrogen bond on bituminous coal spontaneous combustion. The results show that Bmim[Ntf₂] inhibits the spontaneous combustion of bituminous coal. The addition of Bmim[Ntf₂] increases the decomposition temperature of bituminous coal, where the apparent activation energy is increased. The results of Fourier-transformed infrared spectrometry show that the reduction in hydrogen bonds reduces the risk of spontaneous combustion of bituminous coal.

煤炭自燃（CSC）一直威胁着煤炭行业的安全。煤的自燃可能导致煤层燃烧和煤矿瓦斯爆炸，造成很大的危害。同时，CSC会产生大量二氧化碳，严重危害生态环境。因此，减少煤的自燃是很有必要的。离子液体（IL）是一种新型的绿色有机溶剂。具有稳定性好等特点，可作为CSC的阻燃剂。本研究选用1-丁基-3-甲基咪唑双（三氟甲基磺酰基）亚胺（Bmim[Ntf2]）作为烟煤自燃阻燃剂，其中Bmim[Ntf2]处理烟煤的热_稳定性] 和原烟煤进行了同步热重分析仪研究。表观活化能通过FWO方法计算。_{采用傅里叶变换红外光谱仪对烟煤和Bmim[Ntf 2} ]处理烟煤的分解气体产物进行分析，研究分子内氢键对烟煤自燃的影响。结果表明，Bmim[Ntf ₂ ]抑制了烟煤的自燃。添加 Bmim[Ntf ₂] 增加烟煤的分解温度，表观活化能增加。傅里叶变换红外光谱分析结果表明，氢键的减少降低了烟煤自燃的风险。