摘要
综述了近年来国内外萃取精馏溶剂的研究应用进展,重点介绍了离子液体、加盐溶剂和复合溶剂等3类新型溶剂,可通过对结构、组成和用量的调控来达到最优分离性能。新型溶剂的可调控性,有效地改善了传统溶剂因性质单一而无法兼顾高选择性和溶解性的缺点。通过对3类新型溶剂的比较指出,相比于离子液体和加盐溶剂,复合溶剂萃取精馏能使用已有的工艺设备且操作条件简单,更具实用价值,具有极好的开发应用前景。
The recent progresses in solvents for extractive distillation, including ionic liquid, salted solvents and composite solvents, are reviewed. The structure, composition and dosage of novel solvents can be changed to improve the selectivity and solubility. The variability of novel solvents can alleviate the contradiction between selectivity and solubility of conventional solvents. Based on the analysis of the above-mentioned novel solvents, it is pointed out that composite solvents have better practical value and application prospect than ionic liquid and salted solvents because of its simple onerating conditions and usage of existin~ eauinment.
出处
《现代化工》
CAS
CSCD
北大核心
2013年第12期31-35,共5页
Modern Chemical Industry
关键词
萃取精馏
溶剂
离子液体
加盐溶剂
复合溶剂
extractive distillation
solvents
ionic liquid
salted solvents
composite solvents
