CFD simulation of hollow fiber supported NaA zeolite membrane modules

被引:0
作者
Wang, Jiacheng [1 ]
Gao, Xuechao [1 ]
Ji, Guozhao [2 ]
Gu, Xuehong [1 ]
机构
[1] Nanjing Tech Univ, Coll Chem Engn, State Key Lab Mat Oriented Chem Engn, 5 Xinmofan Rd, Nanjing 210009, Jiangsu, Peoples R China
[2] Tsinghua Univ, Sch Environm, Beijing 100084, Peoples R China
基金
中国国家自然科学基金;
关键词
Hollow fiber; Zeolite membrane; Membrane module; Pervaporation; Computational fluid dynamics; PERVAPORATION DEHYDRATION; VAPOR PERMEATION; MASS-TRANSFER; SCALE; SEPARATION; PERFORMANCE; RECOVERY; BAFFLE; FLOW;
D O I
10.1016/j.seppur.2018.12.017
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
NaA zeolite membranes have exhibited excellent performance in pervaporation dehydration of organic solvents. However, the industrial applications based on tubular NaA zeolite membranes are limited due to the high fabrication cost and low permeation flux. Hollow fiber supported zeolite membranes have great advantages of high permeation flux and large packing density, which are beneficial to further reduce the membrane cost. For practical application, it is of great significance to design membrane modules with optimized geometric configuration for the hollow fibers. Here, a hollow fiber membrane module equipped with seven bundles of hollow fiber NaA zeolite membranes and several baffles was designed by computational fluid dynamics (CFD) technique. The effect of baffles on flow field distribution of the membrane module was investigated. The results showed that the membrane module with two radial baffles and four axial baffles not only showed uniform flow distributions inside the module, but also improved the axial velocities along the hollow fibers, which could alleviate concentration polarization. The improved separation efficiency of the membrane module was further confirmed by the experimental characterization.
引用
收藏
页码:1 / 10
页数:10
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