华南理工大学学报(自然科学版) ›› 2008, Vol. 36 ›› Issue (3): 41-44,49.

• 化学化工 • 上一篇    下一篇

管式填料反应器合成无水过氧乙酸用于柴油均相氧化脱硫

张腾云1 钟理1 范洪波2 Chuang Karl 3   

  1. 1. 华南理工大学 化工与能源学院, 广东 广州 510640; 2. 东莞理工学院 化学生物工程系, 广东 东莞 523808;3.艾伯塔大学 化学工程与材料工程系, 加拿大 艾伯塔埃蒙顿T6G2G6
  • 收稿日期:2007-06-15 出版日期:2008-03-25 发布日期:2008-03-25
  • 通信作者: 钟理,教授,博士生导师 E-mail:celzhong@scut.edu.cn
  • 作者简介:张腾云(1967-),男,在职博士生,现在东莞理工学院任教,主要从事环保化学工艺与清洁生产的研究.E-mail:bgzhangty@dgut.edu.cn
  • 基金资助:

    广东省自然科学基金资助项目(07006531)

Homogeneous Oxidative Desulfurization of Diesel Fuel Using Nonaqueous Peracetic Acid Synthesized in Tubular Packed Reactor

Zhang Teng-yun1  Zhong Li1  Fan Hong-bo2  Chuang Karl3   

  1. 1.School of Chemical and Energy Engineering, South China University of Technology, Guangzhou 510640, Guangdong, China; 2. Department of Chemical and Biochemical Engineering, Dongguan University of Technology, Dongguan 523808, Guangdong, China;3. Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta T6G 2G6, Canada
  • Received:2007-06-15 Online:2008-03-25 Published:2008-03-25
  • Contact: 钟理,教授,博士生导师 E-mail:celzhong@scut.edu.cn
  • About author:张腾云(1967-),男,在职博士生,现在东莞理工学院任教,主要从事环保化学工艺与清洁生产的研究.E-mail:bgzhangty@dgut.edu.cn
  • Supported by:

    广东省自然科学基金资助项目(07006531)

摘要: 采用管式填料反应器在丙酮溶剂中进行乙醛液相氧化合成无水过氧乙酸,用所制备的过氧乙酸对加氢柴油进行均相氧化脱硫,并考察了氧化脱硫的温度、时间以及萃取剂乙酸溶液(含5%的水)和过氧乙酸产品用量对脱硫效果的影响.试验结果表明,当过氧乙酸产品用量为理论用量的2倍、脱硫氧化反应温度为50℃、脱硫氧化反应时间为30min、萃取剂用量为氧化柴油的2倍时,氧化脱硫后加氢柴油的硫含量可从295.8mg/kg降到13.4mg/kg,脱硫效率达95.5%,柴油收率达93.8%.用过氧乙酸对加氢柴油进行均相氧化脱硫,可使柴油的硫含量小于15mg/kg的最新国际指标.

关键词: 过氧乙酸, 氧化脱硫, 管式填料反应器, 柴油

Abstract:

Nonaqueous peracetic acid was synthesized in a tubular packed reactor by means of acetaldehyde liquid-phase oxidation in acetone, and was used for the homogeneous oxidative desulfurization of hydrogenized diesel fuel. Then, the oxidative desulfurization efficiency, which was influenced by the desulfurization temperature and time and by the dosages of the extractant(acetic acid solution with 5% water) and peracetic acid, was studied. Experi- mental results show that, when the ratio of the extractant to the oxidized diesel fuel is 2:1 and the dosage of peracetic acid product is two times that of the theoretical one, after the oxidative desulfurization for 30 min at 50 ℃ , the sulfur content in the hydrogenized diesel fuel reduces from 295.8 mg/kg to 13.4 mg/kg, the desulfurization efficiency rises to 95.5% , and the diesel fuel yield reaches 93.8%. It is thus concluded that the sulfur content of the des-ulfurized diesel fuel with homogeneous oxidation by peracetic acid can meet the requirements of the new international standard because it is less than the limitation of 15 mg/kg.

Key words: peracetic acid, oxidative desulfurization, tubular packed reactor, diesel fuel