超声辅助-过氧化氢/甲酸/磷钨酸催化氧化柴油深度脱硫研究  

Study on diesel deep desulfurization by ultrasound assisted-H_2O_2/formic acid/phosphotungstic acid catalytic oxidation

作　　者：徐仿海[1] 孙忠娟[1] 徐大学 孙德[3] 

机构地区：[1]延安职业技术学院化工化学系 [2]陕西延长石油(集团)有限责任公司延安炼油厂 [3]长春工业大学化工学院

出　　处：《石油与天然气化工》2016年第3期27-31,共5页Chemical engineering of oil & gas

摘　　要：在超声辅助下,以过氧化氢/甲酸为氧化剂、磷钨酸为催化剂,用催化氧化的方法对加氢柴油深度脱硫,考察了磷钨酸用量、氧硫摩尔比、甲酸质量分数、油水体积比、反应温度、超声功率、萃取剂组成对加氢柴油脱硫效果的影响。实验结果表明,在磷钨酸用量为0.2%w柴油、氧硫摩尔比为10∶1、甲酸质量分数为80%、油水体积比为8∶1、反应温度为80℃、超声功率为240 W、萃取剂组成为V_(甲醇)∶V_水=2∶1的工艺条件下,加氢柴油脱硫率和收率分别为97.3%和95.6%,总硫质量分数降至9.512μg/g,达到加氢柴油深度脱硫的目的。Deep desulfurization of hydrofining diesel was treated by the process of ultrasound assisted-H_2O_2/formic acid-phosphotungstic acid catalytic oxidation. The factors affecting the treatment were studied. The experimental results showed that under the conditions of phosphotungstic acid dosage was 0.2% of the diesel mass fraction,molar ratio of O to S was 10∶1,formic acid mass fraction was 80%,the volume ratio of diesel to water was 8∶1,reaction temperature was 80 ℃,ultrasonic power was 240 W,the volume ratio of extractant methanol to water was 2∶1,the removal rate of sulfur was 97.3% and the yield was 95.6% respectively,the total sulfur mass fraction decreased to 9.512 μg/g,which could meet the requirement of deep desulfurization of hydrofining diesel.

关 键 词：柴油 深度脱硫 催化氧化 磷钨酸 超声波 

分 类 号：TE624.55[石油与天然气工程—油气加工工程]