中国炼油与石油化工 ›› 2022, Vol. 24 ›› Issue (1): 111-116.

• Process Research • 上一篇    下一篇

复配溶剂萃取分离催化裂化油浆影响因素研究

孙昱东   

  1. 中国石油大学(华东)化学工程学院
  • 收稿日期:2021-08-05 修回日期:2021-10-07 出版日期:2022-03-30 发布日期:2022-03-30
  • 通讯作者: 孙昱东 E-mail:ydsun1970@126.com

Influence Factors Analysis of FCC Slurry Separation by Mixed Solvent Extraction

Yu-dong SUN   

  • Received:2021-08-05 Revised:2021-10-07 Online:2022-03-30 Published:2022-03-30
  • Contact: Yu-dong SUN E-mail:ydsun1970@126.com

摘要: The influence of solvent formulation, temperature, time and solvent-oil ratio on extract oil yields and aromatics contents were analyzed by four factors and three levels of orthorhombic method with Daqing FCC slurry as feedstock and extraction solvent preparing by N,N-dimethylformamide and anti-extractant. The regressive model of extract oil yields and aromatics contents to solvent formulation, temperature, time and solvent-oil ratio were established. The analysis result by response surface method showed that solvent formulation, temperature and solvent-oil ratio have obvious effect on extraction results and there was interaction between temperature and solvent-oil ratio on aromatics contents when FCC slurry extracted by mixed solvent, but the effect of time was not obvious. The model analysis showed that the optimality conditions for FCC slurry separation by mixed solvent were 2.3 of DMF/ anti-extractant, 62.8℃ of temperature, 3.2 of solvent-oil ratio and 35min of time. The prediction results was well consistent with the verification test.

关键词: 溶剂复配, FCC油浆萃取, 响应面法, 萃取油收率, 芳烃含量

Abstract: The influence of solvent formulation, temperature, time and solvent-oil ratio on extract oil yields and aromatics contents were analyzed by four factors and three levels of orthorhombic method with Daqing FCC slurry as feedstock and extraction solvent preparing by N,N-dimethylformamide and anti-extractant. The regressive model of extract oil yields and aromatics contents to solvent formulation, temperature, time and solvent-oil ratio were established. The analysis result by response surface method showed that solvent formulation, temperature and solvent-oil ratio have obvious effect on extraction results and there was interaction between temperature and solvent-oil ratio on aromatics contents when FCC slurry extracted by mixed solvent, but the effect of time was not obvious. The model analysis showed that the optimality conditions for FCC slurry separation by mixed solvent were 2.3 of DMF/ anti-extractant, 62.8℃ of temperature, 3.2 of solvent-oil ratio and 35min of time. The prediction results was well consistent with the verification test.

Key words: Solvent formulation, FCC slurry extraction, Response surface method, Extract oil yield, Aromatic content