Desulfurization of gasoline by condensation of thiophenes with formaldehyde in a biphasic system using aqueous phase of acids

doi:10.1016/j.cjche.2016.08.030

›› 2017, Vol. 25 ›› Issue (2): 166-170.DOI: 10.1016/j.cjche.2016.08.030

• Selected Papers from the International Chemical Separation Technology Conference (ICSTC) • 上一篇下一篇

Desulfurization of gasoline by condensation of thiophenes with formaldehyde in a biphasic system using aqueous phase of acids

Miao He, Yingxia Li, Jie Zhang, Biaohua Chen

State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China

收稿日期:2016-07-06 修回日期:2016-08-30 出版日期:2017-02-28 发布日期:2017-03-14
通讯作者: Yingxia Li
基金资助:
Supported by the National Natural Science Foundation of China (No. 20126008).

Desulfurization of gasoline by condensation of thiophenes with formaldehyde in a biphasic system using aqueous phase of acids

Miao He, Yingxia Li, Jie Zhang, Biaohua Chen

State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China

Received:2016-07-06 Revised:2016-08-30 Online:2017-02-28 Published:2017-03-14
Supported by:
Supported by the National Natural Science Foundation of China (No. 20126008).

摘要/Abstract

摘要： Aqueous phase of acids as catalysts for the desulfurization of gasoline by condensation of thiophenes with formaldehyde in a biphasic system was investigated. Two types of model gasoline with and without aromatics and olefins were employed in this work. The desulfurization rates were above 90% on these two types of model gasoline using formic acid and H₃PW₁₂O₄₀ (0.8 mol·L^-1), indicating that the presence of aromatics and olefins has no effect on the desulfurization rate. High temperature (above 90℃) was more favorable to the process for desulfurization. Four hours was considered to be the proper treating time for the sulfur removal. In addition, aqueous phase of acids could be recycled at least 4 times without decreasing desulfurization rate. Finally, the possible process for the integration of condensation desulfurization into the existing refinery process for the production of gasoline with low sulfur content was proposed.

关键词: Desulfurization, Condensation, Acid, Thiophene

Abstract: Aqueous phase of acids as catalysts for the desulfurization of gasoline by condensation of thiophenes with formaldehyde in a biphasic system was investigated. Two types of model gasoline with and without aromatics and olefins were employed in this work. The desulfurization rates were above 90% on these two types of model gasoline using formic acid and H₃PW₁₂O₄₀ (0.8 mol·L^-1), indicating that the presence of aromatics and olefins has no effect on the desulfurization rate. High temperature (above 90℃) was more favorable to the process for desulfurization. Four hours was considered to be the proper treating time for the sulfur removal. In addition, aqueous phase of acids could be recycled at least 4 times without decreasing desulfurization rate. Finally, the possible process for the integration of condensation desulfurization into the existing refinery process for the production of gasoline with low sulfur content was proposed.

Key words: Desulfurization, Condensation, Acid, Thiophene

Miao He, Yingxia Li, Jie Zhang, Biaohua Chen. Desulfurization of gasoline by condensation of thiophenes with formaldehyde in a biphasic system using aqueous phase of acids[J]. , 2017, 25(2): 166-170.

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Desulfurization of gasoline by condensation of thiophenes with formaldehyde in a biphasic system using aqueous phase of acids

Desulfurization of gasoline by condensation of thiophenes with formaldehyde in a biphasic system using aqueous phase of acids

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