塔河常压渣油中不同沥青质的组成与结构研究  

COMPOSITIONS AND STRUCTURES OF DIFFERENT ASPHALTENES IN TAHE ATMOSPHERIC RESIDUE

作　　者：贾雪娅 马凤云[1] 洪琨[1] 贾晓玲[1] 刘景梅[1] 钟梅[1] Jia Xueya;Ma Fengyun;Hong Kun;Jia Xiaoling;Liu Jingmei;Zhong Mei(College of Chemistry and Chemical Engineering,Xinjiang University,Xinjiang Laboratory of Coal Clean Conversion ＆ Chemical Engineering Process（Key Laboratory of Autonomous Region）,Urumqi 83004)

机构地区：[1]新疆大学化学化工学院新疆煤炭清洁转化与化工过程实验室(自治区级重点实验室),乌鲁木齐830046

出　　处：《石油炼制与化工》2018年第12期43-47,共5页Petroleum Processing and Petrochemicals

基　　金：国家自然科学基金与新疆维吾尔自治区联合基金项目(U1503293)

摘　　要：以塔河常压渣油为原料,分别以正戊烷、正己烷和正庚烷为溶剂,分离制得3个沥青质试样C_5-As,C_6-As,C_7-As,采用SEM,XRD,FT-IR,TG-DTG等方法,分析表征了其表面形态、晶体结构、官能团结构和热解性能等。结果表明:随着溶剂碳链的增加,C_5-As,C_6-As,C_7-As试样的收率逐渐减小,其值分别为33.57%,26.98%,21.12%;表面逐渐粗糙,粒径递减;芳香片层数和芳构化程度增加;芳环取代度降低,缩合度增大;热稳定性增强,残炭增加。The samples of C 5 -As,C 6 -As and C 7 -As asphaltene were separated from the Tahe atmospheric residue （THAR） by n -pentane, n -hexane and n -heptane solvent,respectively. The surface morphology,crystal structure,functional groups and pyrolysis performance of samples were characterized by SEM,XRD,FT-IR and TG-DTG techniques. The results showed that with increase of solvent carbon chain length,the yield of C 5 -As,C 6 -As and C 7 -As becomes 33.57%,26.98% and 21.12%,respectively; the surface of three samples were gradually more rough,the particle size decreases; the layer number of aromatic ring and aromatization degree in the molecular structure cell are increased; aromatic ring substitution decreases and condensation extent increases; the thermal stability and the residual carbon of the samples are increased.

关 键 词：渣油 沥青质 结构参数 

分 类 号：TE622[石油与天然气工程—油气加工工程]