咪唑类离子液体脱除气体中有机硫化物的研究  

Study on removal of gaseous organic sulfides by imidazole ionic liquids

作　　者：郭玉超 康洛铭 李爱蓉[1] 陆原 GUO Yu-chao;KANG Luo-ming;LI Ai-rong;LU Yuan(College of Chemistry&Chemical Engineering,Southwest Petroleum University,Chengdu 610500,China;CNOOC EnerTech Oilfield Chemical Co.,Ltd.,Tianjin 300451,China)

机构地区：[1]西南石油大学化学化工学院,四川成都610500 [2]中海油(天津)油田化工有限公司,天津300451

出　　处：《现代化工》2022年第7期188-194,共7页Modern Chemical Industry

基　　金：2020年省级大学生创新创业训练计划项目(S202010615084);四川省科技创新苗子工程资助项目(2021104)。

摘　　要：以1-丁基-3-甲基咪唑为阳离子制备了[BMIM]Ac、[BMIM]HSO_(4)、[BMIM]DBP、[BMIM]SCN等4种脱有机硫咪唑类离子液体,通过FT-IR和^(1)HNMR等表征验证了其分子结构特征,考察了不同咪唑离子液体对硫醇的脱除效果。结果表明,4种离子液体中[BMIM]Ac可与硫醇形成稳定的氢键,表现出较优的脱硫能力,常压下当含硫醇的原料气流量为100 mL/min时,吸收2 min后可脱除83%的甲硫醇和乙硫醇,丙硫醇的脱硫率可达到92%;另外,该离子液体脱硫性能稳定、再生循环性能优异,可推广用于天然气中有机硫的脱除。Four kinds of imidazole ionic liquids with organic sulfur removal properties,such as[BMIM]Ac,[BMIM]HSO_(4),[BMIM]DBP and[BMIM]SCN,are prepared by using 1-butyl-3-methylimidazole as cation.Their molecular structures are verified by FT-IR and^(1)HNMR,and their desulfurization effects are investigated.Experimental results show that[BMIM]Ac can form a stable hydrogen bond with mercaptan,and shows better desulfurization capacity than other three kinds of imidazole ionic liquids.Under atmospheric pressure,83%of methyl mercaptan and ethyl mercaptan can be removed,and the removal rate of propyl mercaptan can reach 92%when the flow rate of mercaptans-containing feed gas is 100 mL·min^(-1),and the feed gas has been absorbed by[BMIM]Ac for 2 minutes.In addition,it is found that[BMIM]Ac has stable desulfurization and regeneration performance,and can be used in removing organic sulfur in natural gas.

关 键 词：脱硫 离子液体 [BMIM]Ac 硫醇 天然气 

分 类 号：TQ028.2[化学工程]