化学工程2018，Vol.46Issue(4)：41-45,56,6.DOI:10.3969/j.issn.1005-9954.2018.04.008
四氢呋喃对离子液体水溶液二氧化碳水合物生成特性影响
Effects of tetrahydrofuran on formative properties of carbon dioxide hydrate in [APMIm] [Br] aqueous solution
摘要
Abstract
In order to ameliorate the formative properties of CO2 hydrate in the aqueous solutions of ionic liquid 1-aminopropyl-3-methyl-imidazolium bromide ([APMIm] [Br]),tetrahydrofuran (THF) was added.The properties of CO2 absorption in mixed aqueous solutions and formation of CO2 hydrate simultaneously were researched.In the temperature range of 273.15-288.15 K,pressure range of 0.5-3.5 MPa,three phase equilibrium of hydrate-solutions-CO2 gas in the system with different [APMIm] [Br] and THF concentrations were investigated in a high-pressure quartz glass reactor.The results showed that the formation of CO2 hydrate was inhibited by the [APMIm] [Br],but promoted effectively by the THF in the [APMIm] [Br] aqueous solutions,and the pressure for the formation of CO2 hydrate got reduced drastically.The activity coefficient model for the ionic liquid aqueous solutions and the Van der Waals-Platteeuw model for the gas hydrate were applied to calculate the phase equilibrium in the mixed aqueous solutions,and the average relative error was 1.84％ compared to the experiment data.The low-pressure CO2 capture performance of the double-effect process with CO2 absorption by solutions and formation of gas hydrate in the mixed aqueous solutions were well.关键词
离子液体/四氢呋喃/二氧化碳水合物/相平衡Key words
ionic liquid/tetrahydrofuran/carbon dioxide hydrate/phase equilibrium分类
化学化工引用本文复制引用
朱友德,郭开华,皇甫立霞..四氢呋喃对离子液体水溶液二氧化碳水合物生成特性影响[J].化学工程,2018,46(4):41-45,56,6.基金项目
国家自然科学基金资助项目(51076169) （51076169）
广东省自然科学基金重点项目(9251027501000001) （9251027501000001）
