【摘要】 采用FT-IR分析THAR(新疆塔河渣油)和KLAR(克拉玛依渣油)的分子结构特征。借助单一升温速率热重分析法，基于Coast-Redfern拟合模型，在反应级数n=1—4条件下讨论2种渣油的热解动力学特性。结果发现：2种渣油分子组成中均存在芳环类及杂环类结构，其中THAR具有较高质量分数的芳香类结构，KLAR中饱和分和脂肪链含量较多，易于轻质化。热解动力学拟合结果显示：2种渣油的热解过程可分为低温段和高温段2部分。根据相关系数R~2和参数2RT/E分析，2种渣油样品在低温段的反应级数均以n=4为宜，THAR的热解活化能(49.16 kJ/mol)低于KLAR(73.54 kJ/mol)。2种渣油在高温段的反应级数均以n=2最佳，此时由于2种渣油中大分子结构均开始裂解，需要更高的热解活化能，THAR和KLAR的热解活化能分别为141.32 kJ/mol和202.35 kJ/mol。更多还原

【Abstract】 Taking THAR(Xinjiang Tahe residue) and KLAR(Karamay residue) as raw materials, the molecular structure characteristics of the two samples were analyzed by FT-IR,and the pyrolysis performance was studied by thermogravimetry method.Based on the Coast-Redfern kinetic model, the thermogravimetry data were fitted and analyzed, and the kinetic parameters of each reaction order were obtained.The results show that there are aromatic and heterocyclic structures in the two kinds of residues, and KLAR is easier to be upgraded.The pyrolysis kinetics fitting results show that the pyrolysis process of the two kinds of residues can be divided into two parts: low temperature section and high temperature section.According to the correlation coefficient R~2 and the parameter assumption 2RT/E,the reaction order of the two residue samples in the low temperature section should be n=4,and the pyrolysis activation energy of THAR(49.16 kJ/mol) is lower than that of KLAR(73.54 kJ/mol).The reaction order of the two residues in the high temperature section is selected as n=2.At this time, since the macromolecular structures of the two residues begin to crack, higher pyrolysis activation energy with 141.32 kJ/mol for THAR and 202.35 kJ/mol for KLAR is required.更多还原