化工学报 ›› 2008, Vol. 59 ›› Issue (12): 3085-3089.

• 分离工程 • 上一篇    下一篇

连续式FCC柴油萃取-光催化氧化深度脱硫

王磊;沈本贤;徐亚荣   

  1. 上海应用技术学院化工系,上海 200235;华东理工大学化工学院,上海 200237;中国石油乌鲁木齐石化公司研究院,新疆 乌鲁木齐 830046
  • 出版日期:2008-12-05 发布日期:2008-12-05

Continuous deep desulfurization technology by extraction-photocatalytic oxidation for FCC diesel fuel

WANG Lei;SHEN Benxian;XU Yarong   

  • Online:2008-12-05 Published:2008-12-05

摘要:

尽快降低燃料油中的硫含量是整个炼油业都无法回避的重大问题,炼油工业发达的国家已提出生产超低硫清洁燃料 (硫含量低于10 μg•g-1)的目标。本文通过连续式FCC柴油萃取-光催化深度脱硫工艺,对FCC柴油进行精制,精制油中硫含量采用硫氮荧光分析仪测定,硫含量为45 μg•g-1。实验结果表明:萃取操作的适宜条件为常压,萃取温度40℃,剂油比1.5∶1;反应操作的适宜条件为反应温度40℃,反应时间1 h,氧化剂用量为4%。在以上操作条件下,精制油中的硫含量为达到欧Ⅳ标准,精制油总收率超过96%。

关键词: 连续工艺, 萃取, 光催化氧化, 脱硫

Abstract:

The removal of sulfur-containing compounds from diesel fuel is a great problem in refinery industry.In the world, the goal for super low desulfurization clean fuel oil (sulfur content <10 μg&#8226;g-1) has been put forward.In this paper, by using continuous extraction-photocatalytic oxidation desulfurization process, the technology for refining FCC diesel fuel by removing sulfurcontaining compounds was investigated.Sulfur content was analyzed by Anteck Analyzer .Sulfur content of refining oil 45 μg&#8226;g-1 met Europe Ⅳ standard.The experiment results showed that the suitable conditions of extraction and reaction were normal atmosphere, temperature 40℃,solvent/oil ratio 1.5∶1;temperature 40℃, residence time 1 h,and oxidant use 4%.Under these conditions, total sulfur content of two types of FCC diesel fuel met Europe Ⅳ standard, and refined oil yield was above 96%.

Key words: 连续工艺, 萃取, 光催化氧化, 脱硫