化工进展Issue(8)：1986-1991,6.DOI:10.3969/j.issn.1000-6613.2014.08.008
离子液体促进溶剂萃取油砂沥青
Solvent extraction of bitumen from oil sands amended with ionic liquid
摘要
Abstract
Both traditional water extraction and solvent extraction to extract bitumen from oil sands have their drawbacks,such as sand/clay entraining into bitumen and bitumen remaining in residual sands. To resolve these problems,an ionic liquid ([Emim]BF4) was used to enhance bitumen recovery from Canadian oil sands by methyl acetate/n-heptane. FTIR and SEM were used to qualitatively analyze the cleanliness of bitumen and residual sand. Quantitative results of fine sand/clay in bitumen and organic matter remaining in residual sand were also obtained by coupling SEM with Elementar and ICP. The optimal volume ratio of methyl acetate to n-heptane was 2∶3. Meanwhile [Emim]BF4 increased bitumen recovery ratio to 94.20%, 7.92% higher than composite solvent extraction without [Emim]BF4. The results obtained from FTIR , SEM , Elementar and ICP demonstrated that [Emim]BF4 could enhance bitumen separation efficiently. Negligible sand/clay was entrained in extracted bitumen,and no IL or bitumen was found in the treated sand.关键词
油砂/溶剂萃取/离子液体/沥青Key words
oil sands/solvent extraction/ionic liquid/bitumen分类
化学化工引用本文复制引用
张坚强,李鑫钢,隋红..离子液体促进溶剂萃取油砂沥青[J].化工进展,2014,(8):1986-1991,6.基金项目
国家自然科学基金（21306129）及天津市自然科学基金（12JCQNJC05300）项目。 （）
