Oxygen permeation simulation of La0.8Ca0.2Fe0.95O3-δ-Ag hollow fiber membrane at different modes and flow configurations

被引：6

作者：

Zhang, Shude ^{[1
,2
]}

Yeo, Jason Yi Juang ^{[3
]}

Li, Claudia ^{[3
]}

Meng, Xiuxia ^{[2
]}

Yang, Naitao ^{[2
]}

Sunarso, Jaka ^{[3
]}

Liu, Shaomin ^{[1
,4
]}

机构：

[1] Beijing Univ Chem Technol, Coll Chem Engn, Beijing, Peoples R China

[2] Shandong Univ Technol, Sch Chem Engn, Zibo 255049, Peoples R China

[3] Swinburne Univ Technol, Fac Engn Comp & Sci, Res Ctr Sustainable Technol, Jalan Simpang Tiga, Sarawak 93350, Malaysia

[4] Curtin Univ, WA Sch Mines Minerals Energy & Chem Engn, GPO Box U1987, Perth, WA 6845, Australia

来源：

AICHE JOURNAL | 2022年 / 68卷 / 02期

基金：

中国国家自然科学基金;

关键词：

hollow fiber; mixed ionic-electronic conducting; modeling; oxygen permeation; simulation; CERAMIC-BASED MEMBRANES; AIR SEPARATION; TRANSPORT; ION;

D O I：

10.1002/aic.17508

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Mixed ionic-electronic conducting La0.8Ca0.2Fe0.95O3-delta-Ag (LCF-Ag) ceramic hollow fiber membranes possess high structural stability and up to 2.24-fold higher oxygen permeation fluxes relative to LCF hollow fibers. In this work, the oxygen permeation of LCF-Ag hollow fiber membrane module is simulated under sweep gas and vacuum operation modes, whereas the kinetic parameters were obtained by fitting the experimental data with the simplified Tan-Li model. The good correlation obtained from the data regression confirmed the compatibility of the selected model on the LCF-Ag hollow fiber membrane. The simulated results revealed that the countercurrent flow configuration is generally favored in sweep gas operation given its potential of complete oxygen separation under optimized conditions. For vacuum operation, the oxygen yield is practically the same for both flow configurations at a moderate vacuum setting. At a very low vacuum pressure setting, however, cocurrent flow is preferred over countercurrent flow for maximizing the oxygen yield.

引用

页数：13

共 22 条

[1] A two-step surface exchange mechanism and detailed defect transport to model oxygen permeation through the La0.9Ca0.1FeO3-δ mixed-conductor [J].