Removal of Benzothiophene by Extraction with Deep Eutectic Solvents[Bmim]Br-Polyalcohol  

作　　者：Li Wenshen Ren Yongqi Li Jianxiang Hao Yuanbo Liu Jie 

机构地区：[1]School of Petrochemical Engineering,Liaoning Shihua University,Fushun 113001 [2]School of Innovation and Entrepreneurship,Liaoning Shihua University,Fushun 113001

出　　处：《China Petroleum Processing & Petrochemical Technology》2020年第3期49-55,共7页中国炼油与石油化工（英文版）

基　　金：The authors are grateful for financial support from the Doctoral Scientific Research Foundation of Liaoning Shihua University(2019×JJ-006).

摘　　要：Deep eutectic solvents(DESs)1-butyl-3-methylimidazolium bromide-polyalcohol([Bmim]Br-polyalcohol)were synthesized from[Bmim]Br and polyalcohol such as ethylene glycol(EG),propylene glycol(PG),glycerol(GL)at a molar ratio of 1:2.[Bmim]Br-2propylene glycol([Bmim]Br-2PG)was characterized with FT-IR spectroscopy and 1H NMR.The removal of benzothiophene(BT)from model oil was investigated by extraction with DES[Bmim]Br-2PG.The results showed that an extraction efficiency as high as 54.1%could be achieved with the solvent in one-stage extraction at 30℃in 30 min with a DES/oil mass ratio of 1:1.Deep desulfurization was realized after five-stage extraction,and sulfur content in model oil was reduced to less than 10μg/g.The used[Bmim]Br-2PG DES was regenerated and showed an extraction efficiency of 50.5%within four recycles.

关 键 词：extraction desulfurization BENZOTHIOPHENE DESs [Bmim]Br-polyalcohol 

分 类 号：TE624.55[石油与天然气工程—油气加工工程]