Abstract: The deeply oxidation extraction desulfurization technology of FCC gasoline was studied with the investigation on the effects of oxidation conditions，extraction solvent，water content in the extraction solvent，and the volume ratio of solvent to oil. Sulfur content and sulfur compound distribution in the refined oil and the feed oil was also analyzed. Experimental results showed that heteropoly acid/phase transfer agent/H2O2 is a very effective catalytic oxidation system for the desulfurization. With the increase in the volume ratio of solvent to oil or the water content in extraction solvent，the desulfurization ratio of gasoline decreased while the yield of gasoline increased. With 1∶1 volume ratio of solvent to oil and 10% water content in the extraction solvent，the desulfurization ratio and yield of gasoline were achieved to 80% and 97.5% respectively. The catalytic oxidation system of heteropoly acid / phase transfer agent/H2O2 showed good activity for sulfur compounds with strong electronic destruction like benzothiophene and methyl-benzothiophene，and lower activity for sulfur compounds with weak electronic destruction like thiophene.

摘要： 采用催化裂化（FCC）汽油氧化-萃取深度脱硫工艺，考察了氧化反应条件、萃取剂的种类、萃取剂中的含水量以及剂油比对萃取脱硫效果的影响，并对氧化-萃取前后硫含量及类型硫进行了分析。结果表明：杂多酸/相转移剂/H2O2催化氧化体系是非常有效的氧化脱硫体系；随着油剂比、萃取剂含水量的增加，汽油的脱硫率下降，收率增加，在剂油比1∶1、溶剂的含水量10%条件下，汽油的脱硫率达到80%以上，收率97.5%以上；杂多酸/相转移剂/H2O2催化氧化体系对噻吩环被破坏电子效应强的苯并噻吩及甲基苯并噻吩类硫化合物有很好的反应活性，对电子效应弱的噻吩类硫化合物反应活性较低。