功率超声下柴油的氧化吸附脱硫

Catalytic Oxidation via Ultrasound-Adsorption by Active Carbon to Remove Sulfur-Containing Compounds in Diesel

对超声作用下柴油氧化吸附脱硫进行了研究,首先对柴油进行超声氧化,再对氧化后的柴油进行活性炭吸附脱硫。以H2O2为氧化剂,以磷酸和硫酸混合作酸促进剂(V(H3PO4):V(H2SO4)为1:1),再加入催化剂在超声波下对柴油进行氧化。对活性炭进行了不同的预处理,主要考察不同处理方法的活性炭对氧化后柴油的吸附脱硫效果。结果表明,对氧化后的柴油先用KOH溶液洗涤,之后再用硝酸氧化处理后的活性炭进行吸附,柴油脱硫率达到97.70%,柴油回收率达到91.05%。

Oxidative desulfurization of diesel via ultrasound irradiation was studied in the experiment, and then an adsorption process by active carbon follows. Oxidative desulfurization was carried out by catalyst via ultrasound with H2O2 as an oxidant, acid mixture with V（H3PO4 ） ： V（ H2 SO4 ）1 ： 1 as reaction medium. Activated carbon would be pretreatment by different methods. The effect of the different activated carbon on sulfur removal rate of oxidized diesel oil was investigated. The result of the experiment indicates that the sulfur removal rate would reach 97. 70 % when the oxidation diesel oil is washed by KOH before adsorption over activated carbon treated by nitric acid, and the oil yield would be 91.05 %.