超声辅助作用柴油深度氧化脱硫的影响因素

催化氧化脱硫是降低柴油硫含量的非加氢脱硫工艺，在催化氧化溶剂抽提的基础上，增加超声波为反应提供能量。采用H2O2-甲酸作为氧化剂将辽河直馏柴油中的硫化物氧化成相应的砜，考察了氧化反应时间、温度、剂油体积比对脱硫效果的影响。实验结果表明，在超声频率为28 kHz,超声功率为200 W，H2O2和甲酸体积比为1∶1，萃取剂为N，N-二甲基甲酰胺（DMF），一次萃取10 min，萃取剂与油体积比为1∶2的条件下，反应氧化剂与油的体积比为1∶10，温度为50 ℃，氧化反应时间为10 min为较适宜的条件，其脱硫率达到87.8%。

Oxidative Desulfurization Effective Factors of Diesel Fuel With Ultrasound

Catalytic oxidation is a non-HDS technology to remove sulfur compounds from diesel fuel.On the basis of catalytic oxidation and solvent extraction,ultrasound irradiation was introduced to provide energy for the reaction,which developed a completely new diesel oil oxidative desulfurization technology.The sulfides in Liaohe straight-run diesel fuel had been oxidized to sulfones with H2O2-formic acid as oxidant system was used in the process,the effects of reaction temperature,time and volumic ratio of oxidant and oil were investigated.The results show:under the condition of an ultrasonic frequency of 28 kHz;ultrasonic power of 200 W;the volumic ratio of H2O2 to formic acid 1∶1;extraction solvents N,N-dimethylformamide(DMF);an extraction time of 10 min and the volumic ratio of extraction solvent to oil is 1∶2,its proper conditions are as follows: volumic ratio of oxidant to oil is 1∶10;reaction temperature is 50 ℃;oxidation time is 10 min;the rate of desulfurization is 87.8%.