文献类型：期刊文献

英文题名：Interfacial mass transfer intensification with highly viscous mixture

作者：Xie, Hanguang[1];Zong, Yuan[1];Shen, Lian[2,3];Dai, Gance[1]

机构：[1]East China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[2]Univ Minnesota, Dept Mech Engn, 111 Church St SE, Minneapolis, MN 55455 USA;[3]Univ Minnesota, St Anthony Falls Lab, Minneapolis, MN 55455 USA

年份：2021

卷号：236

外文期刊名：CHEMICAL ENGINEERING SCIENCE

收录：;EI(收录号：20210909997025);WOS:【SCI-EXPANDED(收录号:WOS:000632967400005)】；

语种：英文

外文关键词：Twin-liquid films; Open windows; Mass transfer; Concentration boundary layer; Pressure jump

摘要：Many investigations find that mass transfer efficiency decreases dramatically with increasing viscosity, which poses challenges to the industrial processes with the highly viscous mixture. We use liquid films on a vertical plate with windows to address this problem. The hybrid twin-liquid films combine the motility of free-falling films with the stability of wall-bounded films. In this study, the film thickness distributions are measured experimentally, and the detailed hydrodynamics and mass transfer process are studied with numerical simulations. The results reveal the hydrodynamic and mass transfer behaviors of highly viscous twin-liquid films. Due to gravity acceleration inside the window, the maximum velocity of liquid films increases by 2.5-16 times, and the maximum local mass transfer rate increases by 2-6.5 times in our simulations. We conclude that compared with conventional methods, open windows significantly enhance mass transfer in viscous liquid films without additional cost. (c) 2021 Elsevier Ltd. All rights reserved.