功率超声下柴油的深度氧化-吸附脱硫实验研究

在功率超声下柴油氧化脱硫工艺研究的基础上，研究了Fe盐、Cu盐的加入和不同吸附剂及其用量对脱硫效果的影响。结果表明，采用H2O2作为氧化剂，无机混合酸（硫酸与磷酸等体积混合）和Fe盐作为催化剂，反应温度为50 ℃， 柴油体积为80 mL，H2O2体积为1.2 mL，无机酸）体积为1.2 mL，Fe与H2O2质量比为30/100，在功率超声作用下将柴油氧化，氧化后的油样用等体积的2 mol/L KOH溶液进行碱洗；碱洗后的油样，用经硝酸氧化处理的活性炭进行吸附, 剂油体积比为20/10，脱硫后柴油中的硫含量从起始的699.12 μg/g下降到16.08 μg/g，脱硫率为97.70%，油收率为90.87%。

A LABORATORY STUDY OF DEEP OXIDATIVE DESULFURIZATION-ADSORPTION OF DIESEL FUEL WITH ULTRASOUND

Using H2O2 as oxidation agent, mixed acid (isopyknic sulfuric acid and phosphoric acid) and metals (Fe or Cu) as catalysts, the deep oxidative desulfurization-adsorption of diesel fuel was conducted. The effects of metal catalysts, alkaline wash and various pretreated activated carbon adsorbents on the sulfur removal rate were investigated. Results showed that when the desulfurization test was carried out at a oxidation reaction temperature of 50℃, using 80 mL of FCC LCO as feed, 1.2 mL of H2O2, 1.2 mL of mixed acid, a Fe/ H2O2 mass ratio of 0.3 and with the presence of ultrasound; the oxidized oil sample was washed with isopyknic 2 mol/L KOH solution; then the washed oil sample was treated with an activated carbon pretreated with HNO3 at an adsorbent/oil volume ratio of 2, finally, the sulfur content of the treated oil sample was reduced from the original 699.12 μg/g to 16.08 μg/g, the sulfur removal rate and oil yield were 97.70% and 90.87%, respectively.