高校化学工程学报2017，Vol.31Issue(3)：530-538,9.DOI:10.3969/j.issn.1003-9015.2017.03.005
微通道内离子液体萃取硫酸铵水溶液中丁酮肟的研究
Microchannel Extraction of Butanone Oxime from Aqueous Ammonium Sulfate Solution Using Ionic Liquids
摘要
Abstract
Aqueous ammonium sulfate solution is a by-product in butanone oxime synthesis, which may contain trace amount of butanone oxime. Therefore, a sustainable and efficient process is required to recover butanone oxime. Compared to conventional liquid–liquid extractors, microfluidic technique with high specific surface area, small volume, easy to scale up and integrate is an attractive method. In this paper, butanone oxime extraction from aqueous ammonium sulfate solution using ionic liquid 1-butyl-3-methylimidazolium hexafluorophosphate ([Bmim][PF6]) was investigated. Effects of total flow velocity, water phase flow velocity, ionic liquid phase flow velocity, aqueous to ionic liquid volumetric flux ratio, concentrations of butanone oxime and ammonium sulfate, and microchannel inner diameter on extraction efficiency and overall volumetric mass transfer coefficient were studied. The results show that the overall volumetric mass transfer coefficients are in the range of 0.008~1.5 s-1. Furthermore, an empirical correlation is developed to estimate the overall volumetric mass transfer coefficients which are found numerically proportional to the 1.14th power of flow ratio and 0.19th power of Reynolds number, and inversely proportional to the 1.26th power of microchannel inner diameter. The results present fundamental engineering data for industrial application of microchannels in butanone oxime extraction from aqueous ammonium sulfate solutions.关键词
微通道/萃取/丁酮肟/离子液体/传质Key words
microchannel/extraction/butanoneoxime/ionic liquid/mass transfer分类
化学化工引用本文复制引用
刘妍,张宸,吴可君,叶向群,何潮洪..微通道内离子液体萃取硫酸铵水溶液中丁酮肟的研究[J].高校化学工程学报,2017,31(3):530-538,9.基金项目
国家自然科学基金(21306167). （21306167）
