Removal of gaseous acetic acid using ionic liquid [EMIM][BF4]

论文摘要

This work proposed to use the ionic liquid [EMIM][BF4] as absorbent for the absorption of gaseous acetic acid. The feasibility of this technology was investigated from molecular level to industrial scale. The acetic acid absorption experiment was carried out using [EMIM][BF4],and the removal ratio of acetic acid in the gas product can achieve 88.6% at 20C under atmospheric pressure at the laboratory scale. Based on the experimental results, a reliable strict equilibrium phase model embedding the parameters of the UNIFAC model was established. On this basis, the conceptual process design and optimization of acetic acid removal by [EMIM][BF4] at an industrial scale was done, and the most suitable design and operation parameters were obtained. For a further step, the binding energy between [EMIM][BF4] and acetic acid was calculated to give some insights into the separation mechanism, and the results indicate that the interaction between acetic acid and IL is much stronger than that between nitrogen and IL. Moreover, hydrogen bond can be formed between the cation-acetic acid as well as the anion-acetic acid.

论文目录

文章来源

类型: 期刊论文

作者: Mingli Mu,Jun Cheng,Chengna Dai,Ning Liu,Zhigang Lei,Yanzhou Ding,Jianjiang Lu

来源: Green Energy & Environment 2019年02期

年度: 2019

分类: 工程科技Ⅱ辑,工程科技Ⅰ辑

专业: 环境科学与资源利用

单位: College of Environmental and Energy Engineering, Beijing University of Technology,State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology,School of Chemistry and Chemical Engineering, Shihezi University

基金: financially supported by the National Natural Science Foundation of China(No.U1862103)

分类号: X701

页码: 190-197

总页数: 8

文件大小: 842K

下载量: 3

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