第45卷第3期
石油与天然气化工
CHEMICAL ENGINEERING OF OIL & GAS
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
徐仿海孙忠娟徐大学孙德
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
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%拟原油、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240W、萃取剂组成为V吨： V录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9.512 增/g，达到加氢柴油深度脱硫的目的。
关键词柴油深度脱硫催化氧化磷钨酸超声波中图分类号：TE626文献标志码：A
D0I: 10.3969/j.issn.1007-3426.2016.03.006
Study on diesel deep desulfurization by ultrasound assisted-H Oz /formic
acid/phosphotungstic acid catalytic oxidation
Xu Fanghai', Sun Zhongjuan',Xu Daxue’, Sun De
(l . Department of Chemistry and Chemical Engineering , Yan im Vocational and Technical College ,
Yan im 716000 , China; 2. Yanan Oil Refinery , Shaanxi Yanchang Petroleum (group) Co., Ltd., Luochuan 727406, China; 3. School of Chemical Engineering , Chanigchun Uniuersity of Technology , Changchun 130012, China)
Abstract: Deep desulfurization of hydrofining diesel was treated by the process of ultrasound assisted-H2 O /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 O.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 8O C, ultrasonic power was 24O W, the volume ratio of extractant methanol t 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 .
Key words : diesel , deep desulfurization , catalytic oxidation , phosphotungstic acid , ultrasound
近年来，全国各大城市连续性雾霾天气使得
PM2.5受到广泛关注。面临PM2.5浓度指数频频“爆表”的严峻形势，机动车(尤其是柴油车)尾气排放的要求目趋严格。欧洲汽车油料研究表明，柴油硫含
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量降低，可使柴油车PM排放量降低。因此，各国提高柴油质量标准的主要任务是降低硫含量“。世界上大部分国家均针对燃料油中硫含量制定越来越严格的限制2-3]。美国EPA规定：2010年起，车用柴油中硫
作者简介：徐仿海(1973一），男，黑龙江哈尔滨人，高级工程师，现就职于延安职业技术学院化工化学系，主要从事高分子化工、石油化工、煤化工等专业教学及科研工作。邮箱：xufanghail1126.com