Modeling of U-shaped Ba0.5Sr0.5Co0.8Fe0.2O3-δ hollow-fiber membrane for oxygen permeation

doi:10.1016/j.cjche.2017.02.002

›› 2017, Vol. 25 ›› Issue (7): 892-897.DOI: 10.1016/j.cjche.2017.02.002

• Separation Science and Engineering • 上一篇下一篇

Modeling of U-shaped Ba_0.5Sr_0.5Co_0.8Fe_0.2O_3-δ hollow-fiber membrane for oxygen permeation

Huiqi Xie, Yanying Wei, Haihui Wang

School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China

收稿日期:2017-01-11 修回日期:2017-02-17 出版日期:2017-07-28 发布日期:2017-08-17
通讯作者: Yanying Wei,E-mail address:ceyywei@scut.edu.cn;Haihui Wang,E-mail address:hhwang@scut.edu.cn
基金资助:
Supported by the National Science Fund for Distinguished Young Scholars of China (21225625), the Natural Science Foundation of China (21176087) and the Specialized Research Fund for the Doctoral Program of Higher Education (20110172110013).

Modeling of U-shaped Ba_0.5Sr_0.5Co_0.8Fe_0.2O_3-δ hollow-fiber membrane for oxygen permeation

Huiqi Xie, Yanying Wei, Haihui Wang

School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China

Received:2017-01-11 Revised:2017-02-17 Online:2017-07-28 Published:2017-08-17
Supported by:
Supported by the National Science Fund for Distinguished Young Scholars of China (21225625), the Natural Science Foundation of China (21176087) and the Specialized Research Fund for the Doctoral Program of Higher Education (20110172110013).

摘要/Abstract

摘要： A mathematic model is developed for the perovskite-type mixed ionic-electronic conducting (MIEC) membrane, which makes it possible to simulate the process of oxygen separation in the U-shaped Ba_0.5Sr_0.5Co_0.8Fe_0.2O_3-δ hollow-fiber membrane. The model correlates the oxygen permeation flux to the measurable variables. The trends of calculated results for purge operation coincide well with the experimental data, therefore the model is considerable for flux prediction under vacuum operation. Higher oxygen separation efficiency can be achieved with vacuum operation than purge operation. Parameter study with vacuum operation reveals that oxygen permeation flux increases with higher vacuum levels, and vacuum pressure of around 1.013×10³ Pa is the optimal. Also, vacuum operation on the lumen side is much more efficient to achieve higher oxygen permeation flux compared with compression mode on the shell side.

关键词: Membranes, Mathematical modeling, Separation, Oxygen permeation, Perovskite

Abstract: A mathematic model is developed for the perovskite-type mixed ionic-electronic conducting (MIEC) membrane, which makes it possible to simulate the process of oxygen separation in the U-shaped Ba_0.5Sr_0.5Co_0.8Fe_0.2O_3-δ hollow-fiber membrane. The model correlates the oxygen permeation flux to the measurable variables. The trends of calculated results for purge operation coincide well with the experimental data, therefore the model is considerable for flux prediction under vacuum operation. Higher oxygen separation efficiency can be achieved with vacuum operation than purge operation. Parameter study with vacuum operation reveals that oxygen permeation flux increases with higher vacuum levels, and vacuum pressure of around 1.013×10³ Pa is the optimal. Also, vacuum operation on the lumen side is much more efficient to achieve higher oxygen permeation flux compared with compression mode on the shell side.

Key words: Membranes, Mathematical modeling, Separation, Oxygen permeation, Perovskite

Huiqi Xie, Yanying Wei, Haihui Wang. Modeling of U-shaped Ba_0.5Sr_0.5Co_0.8Fe_0.2O_3-δ hollow-fiber membrane for oxygen permeation[J]. , 2017, 25(7): 892-897.

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Modeling of U-shaped Ba_0.5Sr_0.5Co_0.8Fe_0.2O_3-δ hollow-fiber membrane for oxygen permeation

Modeling of U-shaped Ba_0.5Sr_0.5Co_0.8Fe_0.2O_3-δ hollow-fiber membrane for oxygen permeation

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