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第 35 卷第 7 期 精 细 化 工 Vol.35, No.7
201 8 年 7 月 FINE CHEMICALS July 2018

催化与分离提纯技术
一种低共熔溶剂在深度萃取模拟油脱硫中的应用

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杨楠楠 ，王 强 ，邓桂春 ，臧树良
（1. 辽宁石油化工大学 化学化工与环境学部，辽宁 抚顺 113001；2. 泉州理工职业学院，福建 泉州 362269）
摘要：以咪唑及其衍生物和 Bu 4 NBr 为原料，按不同原料配比，通过低温共熔得到了一系列新型低共熔溶剂
（DESs），用于萃取脱除模拟油品中的二苯并噻吩（DBT），并对其最佳脱硫条件进行了考察。结果表明：当 n
（Bu 4 NBr）/n（咪唑）=0.6 时，该类 DESs 对二苯并噻吩表现出最佳萃取效果。针对 DESs 考察了剂油体积比与
反应温度对脱硫效果的影响，测定了 DESs 的选择性能与重复使用性能。结果表明：在 V（DES）∶V（Oil）=1∶
6、萃取温度为 20 ℃、萃取时间为 30 min 时，咪唑与 Bu 4 NBr 共熔物（DESⅠ）对二苯并噻吩的脱硫率达到 89.2%；
经 4 次萃取后，其脱硫率达到 95.0%；相同条件下该类 DESs 对于不同噻吩类衍生物的脱除能力的顺序为：二苯
并噻吩（DBT）>苯并噻吩（BT）＞4,6-二甲基二苯并噻吩（4，6-DMDBT）＞噻吩（T）；再生后脱硫效果良好；
经 7 次重复萃取过程后，DESs 对 DBT 的脱硫率仍高达 86.8%。
关键词：低共熔溶剂；萃取；脱硫；分离提纯技术
中图分类号：TQ203；O621；TE624 文献标识码：A 文章编号：1003-5214 (2018) 07-1176-06

Deep Extractive Desulfrization from Model Oil by
Novel Deep Eutectic Solvents

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YANG Nan-nan , WANG Qiang , DENG Gui-chun , ZANG Shu-liang
（1. College of Chemistry, Chemical Engineering and Environmental Engineering, Liaoning Shihua University, Fushun
113001, Liaoning, China; 2. Quanzhou Institute of Technology, Quanzhou 362269, Fujian, China）
Abstract: A series of novel deep eutectic solvents (DESs) were synthesized with imidazole, its derivatives
and Bu 4 NBr as raw materials by low temperature eutectic method. The extraction removal of dibenzothiophene
(DBT) in model oil was carried out with DESs as extraction agent and the optimum desulfurization
conditions were determined. The results showed that the deep eutectic solvent with a molar ratio of Bu 4NBr
to imidazole of 0.6 exhibited the best extraction effect on dibenzothiophene. In addition, the effect of
volume ratio of extraction agent to oil and temperature on the desulfurization rate was investigated. The
selectivity and recycling performance of DESs were also investigated. The results showed that the
desulfurization rate of DBT was 89.2% under the conditions of extraction agent/oil volume ratio of 1: 6,
extraction temperature of 20 ℃. And the desulfurization rate could reach up to 95.0% after four times
extractions. Under the same conditions, the order of removal ability of different thiophene derivatives was：
DBT>benzothiophene (BT)>4,6-dimethyldibenzothiophene (4,6-DMDBT)＞thiophene (T). The deep eutectic
solvent still exhibited excellent desulfurization effect for DBT after regeneration. The desulfurization rate of
DBT could reach 86.8% after seven times repeated extractions.
Key words: deep eutectic solvents; extraction; desulfurization; separation and purification technology
Foundation items: Research Project of Collaborative Innovation Center of Applicative Technology of Clean
Energy Resources of Department of Education of Fujian Province (2016-71)

随着私家汽车的增多，城市空气质量不断下降， 世界各国对含硫污染物的排放越来越关注，通过制
环境恶化与车用燃油的品质有着密切联系。因此， 定各项法规来控制油品中的硫含量，为实现可持续

收稿日期：2017-06-02 定用日期：2017-11-03; DOI: 10.13550/j.jxhg.20170460
基金项目：“福建省清洁能源应用技术协同创新中心”福建省教育厅项目（2016-71）
作者简介：杨楠楠（1992—），女，硕士生。联系人：王强，副教授， E-mail：qwang0124@126.com。