摘要
利用流体体积分数(VOF)和水平集(Level Set)耦合的多相流数值模拟方法,对微通道降膜反应器中乙醇胺(MEA)溶液反应吸收CO_(2)的过程进行了研究.根据所建立的MEA-CO_(2)体系的流动-反应-传质模型,对微通道内降膜反应吸收过程中出现的Marangoni对流对传质的增强效果进行了定量分析,数值模拟得到的Marangoni对流增强因子与文献实验结果具有较好的一致性.在工业烟道气的CO_(2)浓度下,通过对不同MEA溶液浓度下的Marangoni对流增强因子和吸收率进行分析,得到了利用Marangoni对流增强反应传质的最佳MEA浓度值,可为进一步的工业应用提供参考.
The absorption of CO_(2) by the monoethanolamine(MEA)solution in a microchannel falling film reactor was studied using the multiphase flow numerical simulation method coupled with the volume of fluid(VOF)model and Level Set model.Based on the flow-reaction-mass transfer model of the MEA-CO_(2) system,the enhancement effect of the Marangoni convection on the absorption in the microchannel falling film was analyzed.The enhancement factor of the Marangoni convection obtained with the numerical simulation was in good agreement with the experimental results in the literature.Under the CO_(2) concentration in industrial exhaust,considering the absorptivity and the enhancement factor of the Marangoni convection at different concentrations of MEA solution,the optimum concentration of MEA to enhance the effect of the Marangoni convection on the absorption was obtained.Results from this work can be helpful for further industrial application.
作者
郭佳
朱云菲
沙勇
GUO Jia;ZHU Yunfei;SHA Yong(College of Chemistry and Chemical Engineering,Xiamen University,Xiamen 361005,China)
出处
《厦门大学学报（自然科学版）》
CAS
CSCD
北大核心
2021年第1期29-36,共8页
Journal of Xiamen University：Natural Science
基金
国家自然科学基金(21978243)。
