双相中空纤维膜的氧渗透模拟计算研究

doi:10.3724/SP.J.1077.2012.11635

无机材料学报 ›› 2012, Vol. 27 ›› Issue (9): 951-955.DOI: 10.3724/SP.J.1077.2012.11635

双相中空纤维膜的氧渗透模拟计算研究

杨春利¹, 许启明¹, 宫明¹, 刘卫²

(1. 西安建筑科技大学材料科学与工程博士后流动站, 西安710055; 2. 中国科学技术大学材料科学与工程系, 中国科学院能量转换材料重点实验室, 合肥230026)

收稿日期:2011-10-12 修回日期:2011-11-21 出版日期:2012-09-20 网络出版日期:2012-08-28
作者简介:杨春利(1982-), 女, 博士. E-mail: clyang@mail.ustc.edu.cn
基金资助:
国家自然科学基金(21076204); 西安建筑科技大学基础研究基金(JC1107); 陕西省教育厅科研计划项目(12JK0598, 2010JK643); 中国博士后科学基金(2012M511985)

Simulation of Oxygen Permeability of Dual-phase Hollow Fiber Membrane

YANG Chun-Li¹, XU Qi-Ming¹, GONG Ming¹, LIU Wei²

(1. Postdoctoral Mobile Research Station of Materials Science and Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China; 2. CAS Key Laboratory of Energy Conversion Materials, Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, China)

Received:2011-10-12 Revised:2011-11-21 Published:2012-09-20 Online:2012-08-28
About author:YANG Chun-Li.E-mail: clyang@mail.ustc.edu.cn
Supported by:
National Natural Science Foundation of China (21076204); Basic Research Foundation of Xi'an University of Architecture and Technology (JC1107); Scientific Research Program Foundation by Shaanxi Provincial Education Department (12JK0598, 2010JK643); China Postdoctoral Science Foundation Funded Project (2012M511985)

摘要/Abstract

摘要： 采用相转化/烧结技术制备了致密的Bi_1.5Y_0.3Sm_0.2O₃-La_0.8Sr_0.2MnO_3–_d双相复合陶瓷中空纤维膜. 所得的中空纤维膜具有非对称结构, 靠近膜管内表面部分是指状孔结构, 而靠近膜管外表面则是非常致密的结构. 中空纤维膜的内部尾端的氧气含量与膜管内外的氧分压、纤维膜的长度等有很大的关系. 由于随着氧气的渗透, 膜管内的氧分压沿轴向是增大的, 可以将膜管均分为n段, 采用活塞式流动模型结合Wagner氧渗透理论对双相复合中空纤维膜的氧渗透过程进行了模拟, 模拟结果和实测的相符合, 对于估算膜组件的氧气生产能力具有很好的指导意义.

关键词: 双相复合中空纤维膜, 氧渗透过程, 活塞式流动模型, Wagner方程

Abstract: Dense Bi_1.5Y_0.3Sm_0.2O₃ (BYS)-La_0.8Sr_0.2MnO_3–_d(LSM) hollow fiber membrane was fabricated by the combined phase inversion/sintering technique. The hollow fiber possesses an asymmetric structure: a finger-like porous structure near the inner surface and a dense layer near the outer surface. The outlet oxygen content is related to the oxygen partial pressure on the core and shell side and the length of the hollow fiber. Because the oxygen partial pressure on the permeated side increases along the axis, the hollow fiber is evenly divided into n segments. The oxygen permeation process is simulated by a plug flow model in combination with the Wagner theory. The simulation results are consistent with the measured results, which is a good guide for estimating oxygen production capacity of membrane components.

Key words: dual-phase hollow fiber, oxygen permeation process, plug-flow model, Wagner equation

中图分类号:

TQ174

杨春利, 许启明, 宫明, 刘卫. 双相中空纤维膜的氧渗透模拟计算研究[J]. 无机材料学报, 2012, 27(9): 951-955.

YANG Chun-Li, XU Qi-Ming, GONG Ming, LIU Wei. Simulation of Oxygen Permeability of Dual-phase Hollow Fiber Membrane[J]. Journal of Inorganic Materials, 2012, 27(9): 951-955.

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双相中空纤维膜的氧渗透模拟计算研究

Simulation of Oxygen Permeability of Dual-phase Hollow Fiber Membrane

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