Investigation of the relationship between infrared structure and pyrolysis reactivity of coals with different ranks
Investigation of the relationship between infrared structure and pyrolysis reactivity of coals with different ranks
复制标题
不同等级煤的红外结构与热解反应性关系研究
DOI：
10.1016/j.fuel.2017.12.049
复制
发表时间：
2018-03-15
期刊：
影响因子：
7.4
通讯作者：
Pei, Jiangtao
中科院分区：
文献类型：
--
作者：
Xie, Xing;Zhao, Yan;Pei, Jiangtao
利用一系列原始红外结构参数对6个不同等级煤样的化学结构进行了半定量表征，并利用综合脱挥发分指数对样品的热解反应活性进行了定量表征。建立了红外结构参数和热解反应性之间的相关性。结果表明，本文提出的红外结构参数方法能够有效揭示煤中化学键的分布特征。含氧官能团、C-H基团和无机矿物的总含量可以分别用红外结构参数I-a3、I-b4和I-d3令人满意地表征。脂肪族侧链或桥键的长度经历稳定-增加-减少的过程。红外综合结构参数S与热解反应性之间建立了良好的正相关关系，可有效预测不同级别煤的热解反应性。
The chemical structures of six coal samples with different ranks were semi-quantitatively characterized by a series of original infrared structural parameters, and the pyrolysis reactivity of the samples were quantitatively characterized by a comprehensive devolatilization index. A correlation was established between the infrared structural parameters and pyrolysis reactivity. The results show that the infrared structural parameter method presented in this paper can reveal the distribution characteristic of chemical bonds in coal effectively. The total content of oxygen-containing functional groups, C-H groups and the inorganic mineral can be satisfactorily characterized by infrared structural parameter, I-a3, I-b4 and I-d3 respectively. The length of aliphatic side chains or bridge bonds undergoes a Stable-Increased-Decreased process. Good positive correlation was established between the comprehensive infrared structural parameter S and the pyrolysis reactivity, which was proved effective to predict the pyrolysis reactivity of coal over various ranks.