煤炭是我国在经济发展过程中不可或缺的主要化石能源之一，随着经济的快速发展原煤产量逐年稳步增加。但是，由于煤炭化学性质不稳定，易受潮风化，发生氧化自燃，对运输和贮存过程带来了巨大的威胁。因此，众多阻化煤自燃的手段应运而生，其中，抗氧化剂作为现阶段研究的热点方向，在医疗、食品、化工的领域有着广泛的应用背景，然而在阻化煤自燃方面的研究较少，因此本文选取变质程度较低的新疆哈密煤为研究对象，以三种常用抗氧化剂作为阻化剂，主要展开以下研究：

通过煤质分析发现该煤属于高挥发分低灰分的低硫煤，其中硫元素主要以黄铁矿的形式存在。然后采用X-射线衍射仪对原煤及阻化煤的微晶结构参数进行分析，发现抗氧化剂对煤中的芳香环及其形成的层片结构基本无影响，对不稳定的支链结构具有一定的作用。同时结合Jade软件分析，发现煤中的矿物质主要为方解石和高岭土。

利用红外光谱仪对原煤及不同抗氧化剂添加量的阻化煤进行了分析，得到了三种抗氧化剂最佳阻化效果的添加量均为1 wt%，并从优中选优，比较得出了具有最优阻化效应的茶多酚。另外，结合定性和半定量分析，发现β-胡萝卜素对脂肪烃的阻化作用最佳，白藜芦醇整体上表现较为一般。

通过同步热分析和热重-红外联用的方法，掌握了抗氧化剂对热效应参数的作用特点，以及对煤氧化动力学过程的影响。根据各煤样的热流曲线，得到了它们的热物性参数的变化特点。最后，采用FWO法研究了各煤样表观活化能与转换率的关系，同时在5 °C/min，10 °C/min和15 °C/min三种不同升温速率下结合Bagchi法得到了各煤样的动力学三因子。

Coal is one of the indispensable fossil fuels in the process of economic development in China. With the rapid economic development, the output of raw coal steadily increases rapidly. However, due to the unstable chemical properties of coal, it is susceptible to moisture weathering and prone to oxidative spontaneous combustion, which poses a huge threat to transportation and storage processes. Therefore, many means to prevent the spontaneous combustion of chemical coal emerge at the historic moment. Among them, antioxidants, as a hot research field at present, have a wide application background in the fields of medical treatment, food and chemical industry. However, there are few studies on preventing the coal spontaneous combustion. Hence, in this paper, Hami coal of Xinjiang with low metamorphic degree is selected as the research object, and three commonly used antioxidants are used as inhibitors to carry out the following studies:

Through the coal quality analysis, the coal has the characteristics of high volatile content and low ash content, and sulfur in coal mainly exists in the form of pyrite. Then, X-ray diffraction was used to analyze the microcrystalline structure parameters of raw coal and inhibited coal, which obtained a conclusion that the antioxidant had little effect on the structure of aromatic ring and the lamellar structure formed in the coal, but had a certain effect on the unstable branched chain structure. Combined with Jade software analysis, minerals in coal are mainly calcite, kaolin.

The raw coal and inhibited coal with different antioxidant content were analyzed by using infrared spectrometer. The optimal inhibitory effect of the three antioxidants was obtained by the addition amount of 1 wt%. Further, the best inhibition effect of tea polyphenols was obtained by comparison. In addition, combined with qualitative and semi-quantitative analysis, it was found that β-carotene had the best inhibition effect on aliphatic hydrocarbon, while resveratrol showed a general performance.

Tested by synchronous thermal analysis and thermogravimetric infrared method, antioxidant effect on thermal effect parameter characteristics, and the influence of the dynamics of coal oxidation process was obtained. According to the heat flow curve of each coal sample, the heat release law and the variation of thermal characteristics are gotten. At the end of the paper, in order to establish the mathematical relationship between the apparent activation energy and conversion, FWO method was conducted. The kinetic triplet of each coal sample were obtained by Bagchi method under 5 °C/min, 10 °C/min, and 15 °C/min heating rates.

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