石油炼制与化工 ›› 2019, Vol. 50 ›› Issue (11): 61-65.

• 油品与添加剂 • 上一篇    下一篇

曼尼希碱燃油清净剂的结构及性能研究

辛世豪,黄作鑫   

  1. 中国石化石油化工科学研究院
  • 收稿日期:2019-05-08 修回日期:2019-07-03 出版日期:2019-11-12 发布日期:2019-11-29
  • 通讯作者: 辛世豪 E-mail:xinshihao.ripp@sinopec.com
  • 基金资助:
     

STUDY ON STRUCTURE AND PERFORMANCE OF MANNICH DETERGENTS

Xin Shihao,Huang Zuoxin   

  1.  SINOPEC Research Institute of Petroleum Processing

  • Received:2019-05-08 Revised:2019-07-03 Online:2019-11-12 Published:2019-11-29
  • Contact: Xin Shihao E-mail:xinshihao.ripp@sinopec.com
  • Supported by:
     

摘要: 合成了不同结构的曼尼希碱清净剂,在汽油、柴油中进行了清净性能评价,探讨了曼尼希碱分子结构、热稳定性、增溶能力及分子键能与清净性能的关系。结果表明:Mono型和Bis型曼尼希碱的清净性能较好,Diamine型曼尼希碱清净效果较差;提高曼尼希碱胺化物中氮原子数无法进一步提高其清净性能;曼尼希碱热稳定性越高,清净性能越好,热稳定性相当时,增溶能力越强,清净性越好;曼尼希碱分子中仲胺生成的碳氮键键能小于伯胺生成的碳氮键键能,在高温时容易断裂而导致曼尼希碱清净性能变差。

关键词: 曼尼希碱, 燃油清净剂, 分子结构, 性能研究

Abstract: Mannich base detergents with different structures were synthesized and their detergency properties for gasoline and diesel fuel were evaluated. The relationship between the molecular structure, thermal stability, solubilization and bond energy of Mannich base with detergency property was discussed. The results showed that Mono and Bis Mannich base had better detergencies, but Diamine had worse detergency. Increasing the number of nitrogen atom in Mannich base amines could not further improve its cleaning performance. The higher the thermal stability of Mannich base, the better the cleaning performance. When the thermal stability was equal, the stronger the solubility, the better the cleanliness. The carbon-nitrogen bond energy generated by secondary amine in Mannich base molecule was less than that generated by primary amine, and it is easy to break at high temperature, resulting in poor cleaning performance of mannich base.

Key words: Mannich base, fuel detergent, molecular structure, performance study

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