Journal of South China University of Technology (Natural Science Edition) ›› 2008, Vol. 36 ›› Issue (3): 41-44,49.

• Chemistry & Chemical Engineering • Previous Articles     Next Articles

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）

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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