石油炼制与化工 ›› 2018, Vol. 49 ›› Issue (12): 43-47.

• 基础研究 • 上一篇    下一篇

塔河常压渣油中不同沥青质的组成与结构研究

贾雪娅,马凤云,洪琨,贾晓玲,刘景梅,钟梅   

  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)
  • 收稿日期:2018-04-09 修回日期:2018-07-03 出版日期:2018-12-12 发布日期:2019-01-03
  • 通讯作者: 马凤云 E-mail:ma_fy@126.com
  • 基金资助:
    国家自然科学基金与新疆维吾尔自治区联合基金项目

COMPOSITIONS AND STRUCTURES OF DIFFERENT ASPHALTENES IN TAHE ATMOSPHERIC RESIDUE

    

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  • Received:2018-04-09 Revised:2018-07-03 Online:2018-12-12 Published:2019-01-03
  • Contact: Ma Fengyun E-mail:ma_fy@126.com
  • Supported by:
     

摘要: 以塔河常压渣油为原料,正戊烷、正己烷和正庚烷为溶剂,分离制得3个沥青质试样C5-As,C6-As,C7-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,C5-As,C6-As,C7-As试样的收率逐渐减小,其值分别为33.57 %,26.98 %,21.12 %; 3个试样依次表面逐渐粗糙,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。

关键词: 渣油, 沥青质, 结构参数

Abstract: The samples of C5-As, C6-As and C7-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 C5-As, C6-As and C7-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.

Key words: residual oil, asphaltene, structural parameter

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