石油化工2026，Vol.55Issue(6)：854-860,7.DOI:10.3969/j.issn.1000-8144.2026.06.006
离子液体用于直馏柴油芳烃抽提
Aromatics extraction from straight-run diesel using ionic liquids
摘要
Abstract
1-hexyl-3-methylimidazolium tetrafluoroborate([C6MIM][BF4])ionic liquid was used as an extraction solvent for aromatics extraction of straight-run diesel.The applicability and separation performance of the solvent towards aromatics in straight-run diesel were investigated.The experimental results show that four-stage cross-current extraction is carried out on five straight-run diesels at 60℃with a solvent/oil mass ratio of 3.The raffinate of straight-run diesel-1 to straight-run diesel-3 meets the feedstock specifications of steam cracking units.The aromatics content in raffinate decreases with the increase of solvent/oil mass ratio and extraction stages.When the solvent/oil ratio mass is 4,and four-stage counter-current extraction is adopted,the composition and properties of raffinate show no significant variation with increasing the number of extraction stages.Simulations on the steam cracking performance of straight-run diesel-1 and its raffinate are conducted via SPYRO software.Compared with straight-run diesel-1,the raffinate as steam cracking feedstock presents 2.15%higher ethylene yield,0.96%higher propylene yield,and 2.32%lower ethylene tar yield.关键词
离子液体/直馏柴油/芳烃抽提/工艺优化Key words
ionic liquid/straight-run diesel/aromatics extraction/process optimization分类
化学化工引用本文复制引用
孙睿,赵明,朱宁,于博,史军军..离子液体用于直馏柴油芳烃抽提[J].石油化工,2026,55(6):854-860,7.基金项目
中国石油化工股份有限公司资助项目(420080). （420080）
