Abstract: The sulfur - bearing organics in diesel oil was oxidized using H2O2 - CH3COOH systems via microwave irradiation，then the oxidized organic sulfur compounds (sulfones) were extracted by N,N - dimethyl formamide. Experimental results show that the removal efficiency of sulfur compounds is up to 88.2％ in the following conditions：the dosage of the oxidant is 12 times as much as that of theoretical, the volume ratio of solvent-to-oil is 0.25∶1, the pressure is 0.4 MPa, the radiant time on the constant pressure is 6 min, the microwave power is 375 W，the volume ratio of extractant-to- oil is 0.25∶1, the standing time is 10 min. Compared with other methods on oxidative desulfurization, the removal efficiency of sulfur can increase 26%～42% and the dosage of the oxidant reduce 20%~50%.

Key words: Desulphurization ,  Microwave irradiation , Extraction , Diesel oil

摘要： 以H2O2 -CH3 COOH 为氧化剂, N , N -二甲基甲酰胺为萃取剂, 在微波作用下对柴油进行脱硫实
验。结果表明, 在复合溶剂用量为理论用量的12 倍, 剂油体积比为0.25 ∶1, 辐射压力为0 .4 MPa 、恒压辐射时间为
6 min , 辐射功率375 W , 萃取剂与油体积比为1 ∶1, 静置时间为10 min 条件下, 油品的脱硫率达到88 .2 %。与其它
氧化脱硫法相比, 脱硫率提高26 %～ 42 %, 氧化剂用量减少20%～ 50%

关键词: 脱硫 , 微波 , 萃取 , 柴油