An oxidative desulfurization method using ultrasound/Fenton's reagent for obtaining low and/or ultra-low sulfur diesel fuel

作者：Dai Yonchuan^*; Qi Yutai; Zhao Dezhi; Zhang Huicheng

来源：Fuel Processing Technology, 2008, 89(10): 927-932.

DOI：10.1016/j.fuproc.2008.03.009

• Ultrasound
• Diesel fuels
• Oxidative desulfurization
• Fenton's reagent
• Synergistic effect

The total development trend in the world is towards continuously lower of sulfur content as a quality standard of diesel fuels. integrating of an oxidative desulfurization unit with a conventional hydrotreating unit can bring benefits to producing low and/or ultra-low sulfur diesel fuels. Using the hydrotreated Middle East diesel fuel as a feedstock, four processes of the oxidative desulfurization have been studied: a hydrogen peroxide-acetic acid system and a Fenton's reagent system both without/with ultrasound. Results showed that the oxidative desulfurization reaction mechanics fitted apparent first-order kinetics. The addition of Fenton's reagent could enhance the oxidative desulfurization efficiency for diesel fuels and sono-oxidation treatment in combination with Fenton's reagent shows a good synergistic effect. Under our best operating condition for the oxidative desulfurization: temperature 313 K, ultrasonic power 200 W, ultrasonic frequency 28 kHz, Fe(2+)/H(2)O(2) 0.05 mol/mol, pH 2.10 in aqueous phase and reaction time 15 min, the sulfur content in the diesel fuels was decreased from 568.75 mu g/g to 9.50 mu g/g.

• 出版日期2008-10
• 单位哈尔滨工业大学; 辽宁石油化工大学