辽宁石油化工大学学报 ›› 2025, Vol. 45 ›› Issue (6): 1-10.DOI: 10.12422/j.issn.1672-6952.2025.06.001

• 化学与化学工程 •    下一篇

重质油共混改性催化聚合制备包覆沥青的研究

杨春辉1(), 李静1, 石薇薇1, 乔海燕1(), 韩冬云1, 佟天宇2   

  1. 1.辽宁石油化工大学 石油化工学院 辽宁省非常规油气综合利用重点实验室,辽宁 抚顺 113001
    2.抚顺职业技术学院 化学工程系,辽宁 抚顺 110172
  • 收稿日期:2024-12-23 修回日期:2025-01-22 出版日期:2025-12-25 发布日期:2025-12-07
  • 通讯作者: 乔海燕
  • 作者简介:杨春辉(2000⁃),男,硕士研究生,从事重质油改性制备包覆沥青的研究;E⁃mail: 254183493@qq.com
  • 基金资助:
    辽宁省教育厅基本科研项目(LJ212410148006)

Preparation of Coated Asphalt by Catalytic Polymerization by Modified Heavy Oil Blends

Chunhui YANG1(), Jing LI1, Weiwei SHI1, Haiyan QIAO1(), Dongyun HAN1, Tianyu TONG2   

  1. 1.Key Laboratory of Comprehensive Utilization of Unconventional Oil and Gas in Liaoning Province,School of Petrochemical Engineering,Liaoning Petrochemical University,Fushun Liaoning 113001,China
    2.Department of Chemical Engineering,Fushun Vocational Technology Institute,Fushun Liaoning 110172,China
  • Received:2024-12-23 Revised:2025-01-22 Published:2025-12-25 Online:2025-12-07
  • Contact: Haiyan QIAO

摘要:

以减黏渣油(RVR)、催化裂化油浆(FCCS)为原料,通过乙烯焦油(ET)对其进行改性并优化制备工艺,得到了优质包覆沥青产品;采用FT?IR、XRD、TG/DTG对原料与产品进行分析,结合1H?NMR、元素分析和相对分子质量的信息,对反应机理进行了推测。结果表明,油料共混改性难度与原料中沥青质、芳香分占比显著相关,二者占比越大,改性越容易;从反应机理层面,乙二醇在酸性条件下脱水生成的+CH2CH2+起桥联作用,使RVR、FCCS和ET发生缩聚反应生成稠环芳烃结构的包覆沥青E?FCCS和E?RVR。改性原料油中脂肪链烷基结构含量越高,则反应活性越强,在催化交联聚合过程中易裂解生成小分子,该小分子会阻碍多环芳烃间的缩聚反应,抑制体系芳香性增长,进而干扰石墨晶体结构的生长,不利于以稠环芳烃为基本单元的理想石墨晶体生成,包覆沥青E?FCCS、E?RVR的表征分析支持这一结论。通过明确原料结构、反应机理与产品性能的内在关联,为重质油共混改性催化聚合制备包覆沥青提供一定的理论支撑与工艺参考。

关键词: 减黏渣油, 催化裂化油浆, 乙烯焦油, 共混改性, 包覆沥青

Abstract:

RVR and FCCS were employed as raw materials, modified with ET, high?quality coated asphalt products were obtained through optimization of the preparation process. The raw materials and products were characterized using FT?IR, XRD and TG/DTG. Combined with the information from 1H?NMR, elemental analysis, and molecular weight determination, the reaction mechanism was proposed. The results show that the difficulty of blending and modifying the raw materials is significantly related to the content of asphaltenes and aromatics, higher proportions of asphaltenes and aromatics facilitate the modification process. From the perspective of the reaction mechanism, the +CH?CH2+ generated by the dehydration of ethylene glycol under acidic conditions plays a bridging role, enabling RVR, FCCS, and ET to form coated asphalts E?FCCS and E?RVR with condensed aromatic structures through polycondensation reactions. A higher content of aliphatic chain alkyl structures in the modified feedstock oil leads to stronger reaction activity. During the catalytic cross?linking polymerization process, these structures are prone to cleavage to form small molecules. These small molecules hinder the polycondensation reaction between polycyclic aromatic hydrocarbons, inhibit the increase in aromaticity of the system, and thereby interfere with the growth of graphite crystal structures, which is unfavorable for the formation of ideal graphite crystals with condensed aromatic hydrocarbons as basic units. The characterization and analysis results of the coated asphalts E?FCCS and E?RVR support this conclusion. By clarifying the intrinsic relationships between raw material structure, reaction mechanism, and product properties, this study provides theoretical and technical foundations for the preparation of coated asphalt via blending modification and catalytic polymerization of heavy oil.

Key words: Viscosity reducing residue oil, Catalytic cracking slurry oil, Ethylene tar, Blending modification, Coated asphalt

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引用本文

杨春辉, 李静, 石薇薇, 乔海燕, 韩冬云, 佟天宇. 重质油共混改性催化聚合制备包覆沥青的研究[J]. 辽宁石油化工大学学报, 2025, 45(6): 1-10.

Chunhui YANG, Jing LI, Weiwei SHI, Haiyan QIAO, Dongyun HAN, Tianyu TONG. Preparation of Coated Asphalt by Catalytic Polymerization by Modified Heavy Oil Blends[J]. Journal of Liaoning Petrochemical University, 2025, 45(6): 1-10.

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