| 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9.512 μg/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 |
| DOI：10.3969/j.issn.1007-3426.2016.03.006 |
| 分类号:TE626 |
| 基金项目: |
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| Study on diesel deep desulfurization by ultrasound assisted-H2O2/formic acid/phosphotungstic acid catalytic oxidation |
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Xu Fanghai1, Sun Zhongjuan1, Xu Daxue2, Sun De3
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(1. Department of Chemistry and Chemical Engineering, Yan'an Vocational and Technical College, Yan'an 716000, China;2. Yan'an Oil Refinery, Shaanxi Yanchang Petroleum(group) Co., Ltd., Luochuan 727406, China;3. School of Chemical Engineering, Changchun University of Technology, Changchun 130012, China)
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| Abstract: |
| Deep desulfurization of hydrofining diesel was treated by the process of ultrasound assisted-H2O2/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. |
| Key words: diesel deep desulfurization catalytic oxidation phosphotungstic acid ultrasound |
