离子液体萃取脱除残渣燃料油中硫化物  

Removing sulfide from residual fuel oil by extraction of ionic liquids

作　　者：孙强[1] 兰政达 郭绪强 刘爱贤 王逸伟 杨兰英[1] Sun Qiang;Lan Zhengda;Guo Xuqiang;Liu Aixian;Wang Yiwei;Yang Lanying(State Key Laboratory of Heavy Oil Processing,Department of Chemical Engineering and Environment,China University of Petroleum-Beijing,Beijing 102249,China;Department of Engineering,China University of Petroleum-Beijing at Karamay,Karamay Xinjiang 834000,China)

机构地区：[1]中国石油大学(北京)化学工程与环境学院重质油国家重点实验室,北京102249 [2]中国石油大学(北京)克拉玛依校区工学院,新疆克拉玛依834000

出　　处：《石油化工》2021年第8期766-771,共6页Petrochemical Technology

基　　金：新疆维吾尔自治区高校科研计划自然科学项目(XJEDU2020Y044)。

摘　　要：以离子液体1-丁基-3-甲基咪唑四氟硼酸盐([Bmim]BF_(4))、疏水性1-丁基-3-甲基咪唑六氟磷酸盐([Bmim]PF_(6))、1-辛基-3-甲基咪唑六氟磷酸盐([Omim]PF_(6))以及1-丁基-3-甲基咪唑溴盐([Bmim]Br)为萃取剂,对船用残渣燃料油首先进行了直接萃取脱硫研究,考察了不同条件下离子液体的脱硫性能和再生性能。进而选择离子液体[Bmim]BF_(4)和[Bmim]PF_(6),以H_(2)O_(2)为氧化剂、磷钼酸和磷钨酸为催化剂,完成了不同条件下的萃取-氧化脱硫实验研究。实验结果表明,单级直接萃取的最高脱硫率约为30%,[Bmim]BF_(4)和[Bmim]PF_(6)相对具有较好的再生脱硫性能;采用萃取-氧化法能够显著提升离子液体的脱硫效果,最高脱硫率约70%,同时能够有效降低离子液体的用量。1-Butyl-3-methylimidazolium tetrafluoroborate([Bmim]BF_(4)),1-butyl-3-methylimidazolium hexafluorophosphate([Bmim]PF_(6)),1-octyl-3-methylimidazolium hexafluorophosphate([Omim]PF_(6)),1-butyl-3-methylimidazolium bromide([Bmim]Br)were first used as extraction agents to remove sulfide from marine residual fuel oil by direct extraction method.The desulfurization performance at different conditions and the regeneration performance of the above agents were investigated.Further,hydrogen peroxide as oxidizing agent,phosphomolybdic acid and phosphotungstic acid as catalyst,were applied to[Bmim]BF_(4) and[Bmim]PF_(6) systems,respectively,and the desulfurization experiments by extraction-oxidation method were conducted accordingly.The results demonstrate that the maximum desulfurization rate of single-stage direct extraction is about 30%,and[Bmim]BF_(4) and[Bmim]PF_(6) have relatively better desulfurization performance after regeneration;Using the extraction-oxidation method can greatly improve the desulfurization effects of ionic liquids with about 70% the maximum desulfurization rate,and it can effectively reduce the dosages of ionic liquids.

关 键 词：离子液体 残渣燃料油 脱硫 萃取 萃取-氧化 

分 类 号：TE65[石油与天然气工程—油气加工工程]