精细石油化工

为适应新的船用燃料油标准的变化，开发了一种简单有效低成本的处理燃料油调合组分油的工艺，并使用氧化萃取技术对蜡油进行了研究。结果表明：蜡油氧化萃取脱硫最佳实验条件为5%（质量分数，下同）的氧化剂，0.5%的四丁基溴化铵相转移剂，5%的甲酸催化剂，在60℃水浴搅拌反应1.5 h。以N,N-二甲基甲酰胺为萃取剂，在剂油质量比为1∶1条件下，脱硫率达到72.89%，收率为70.99%。混合蜡油中硫化物易被氧化的顺序为二苯并噻吩类>苯并噻吩类>噻吩类。

In order to adapt to the changes in the new standards for marine fuel oil, a simple, effective, and low-cost process for processing blended components of fuel oil has been developed, and oxidation extraction technology has been used to study wax oil. The results showed that the optimal experimental conditions for wax oil oxidation extraction desulfurization were 5%(mass fraction, the same below) oxidant, 0.5% tetrabutylammonium bromide phase transfer agent, 5% formic acid catalyst, stirred in a water bath at 60 ℃ for 1.5 h, and N,N-dimethylformamide as the extractant. Under the condition of a 1∶1 solvent oil mass ratio, the desulfurization effect was the best, with a desulfurization rate of 72.89% and a yield of 70.99%. The order in which sulfides are easily oxidized has been determined to be dibenzothiophenes > benzothiophenes > thiophenes.