Abstract In this study, brown coals fast pyrolysis/combustion was carried out in a moving furnace coupled with a balance, and the mass change of sample and emission of hydrocarbon components were online recorded. On the basis of the experimental results, the pyrolysis/combustion kinetic parameters were calculated. In the fast pyrolysis process, the apparent activation energy of Loy Yang brown coal, Wara brown coal and Usibelli brown coal was 36.9, 33.1 and 28.1 kJ/mol respectively, which was far lower than that obtained under the slow pyrolysis process. The main light hydrocarbon gases evolved from brow coal fast pyrolysis were CH4, C2H6 and C3H8. At the same time, it was found that the reaction rate of brown coal fast pyrolysis was strongly influenced by the oxygen content of the raw coal. The high oxygen content of the raw coal was beneficial to pyrolytic reaction. The combustion process of the brown coal could be divided two stages: in the first stage, the evolution and combustion of volatile matter occurred simultaneously. In the secondary stage, only char combustion occurred. The apparent activation energy of char combustion was 2.3–20.8 kJ/mol.

中文翻译：

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三种不同褐煤的快速热解燃烧特性

摘要 本研究在移动炉内结合天平进行褐煤快速热解/燃烧，在线记录样品的质量变化和烃类组分的排放。在实验结果的基础上，计算了热解/燃烧动力学参数。在快速热解过程中，洛阳褐煤、瓦拉褐煤和乌西贝利褐煤的表观活化能分别为36.9、33.1和28.1 kJ/mol，远低于慢热解过程得到的表观活化能。粗煤快速热解产生的主要轻烃气体为 CH4、C2H6 和 C3H8。同时发现，褐煤快速热解的反应速率受原煤含氧量的影响很大。原煤含氧量高，有利于热解反应。褐煤的燃烧过程可分为两个阶段：第一阶段，挥发分的演化和燃烧同时发生。在第二阶段，只发生炭燃烧。炭燃烧的表观活化能为 2.3-20.8 kJ/mol。