离子液体[Et_3NH]Cl-0.5FeCl_3汽油深度脱硫的研究  

Deep Extractive Desulfurization of Gasoline with Ionic Liquid [Et_3NH]Cl-0.5FeCl_3

作　　者：王浩杰[1] 贺建勋[1] 张志[1] 徐鑫[1] 刘晓盼[1] 杨彩茸[1] 

机构地区：[1]西北大学化工学院,陕西西安710069

出　　处：《西北大学学报（自然科学版）》2014年第5期762-765,共4页Journal of Northwest University（Natural Science Edition）

基　　金：西北大学研究生创新训练计划基金资助项目(YZZ13029);陕西省科技统筹创新工程计划基金资助项目(2012KTD01-01-04)

摘　　要：以成本较低的盐酸三乙胺和三氯化铁为原料合成离子液体[Et3NH]Cl-0.5FeCl3,用于模拟汽油(二苯并噻吩溶于正辛烷配制而成)萃取脱硫。通过单因素实验考查了剂油比、萃取温度和萃取时间对模拟汽油脱硫率的影响。并考察其对真实FCC汽油的脱硫效果。研究结果表明,当萃取温度T=50℃,剂油比v(IL):v(oil)=0.2∶1,萃取时间t=50min时,模拟汽油脱硫率可达96.19%。经过4步萃取,使真实FCC汽油硫含量低于10ppm,符合国V标准对硫含量的要求。离子液体循环使用5次后脱硫率没有明显下降。Ionic Liquid [Et3NH] Cl-0.5FeCl3 was synthesised by triethylamine hydrochloride and FeCl3,and it was used as extraction agent in the extractive desulfurization of model gasoline （prepared by dissolving dibenzothiophene in n-octane）.The influence of the volume ratio of II/oil,extraction temperature and extraction time on the sulfur removal were examined.And the desulfurization capability of Ionic liquid on FCC gasoline was studied too.The results show that when the extraction temperature T =50℃,volume ratio of IL/oil v （IL） ∶v（oil） =0.2∶ 1,extraction time t =50min,[Et3NH] Cl-0.5FeCl3 showed surprising sulfur removal of DBT,96.19%.After four steps extraction,real FCC gasoline could be depressed to below 10ppm,meeting the requirement of sulfur content of V standard.The ionic liquid could be recycled 5 times with only a slight decrease in activity.

关 键 词：离子液体 盐酸三乙胺 萃取脱硫 FCC汽油 

分 类 号：TQ252.3[化学工程—有机化工]