渗透
氧气
中空纤维膜
膜
体积流量
纤维
氦
材料科学
扩散
分析化学(期刊)
透氧性
纺纱
相位反转
化学
化学工程
色谱法
复合材料
热力学
有机化学
生物化学
物理
工程类
作者
Yanying Wei,Hongfei Liu,Jian Xue,Zhong Li,Haihui Wang
出处
期刊:Aiche Journal
[Wiley]
日期:2010-07-12
卷期号:57 (4): 975-984
被引量:56
摘要
Abstract The oxygen permeation of dense U‐shaped perovskite hollow‐fiber membranes based on Ba 0.5 Sr 0.5 Co 0.8 Fe 0.2 O 3−δ prepared by a phase inversion spinning process is reported. The perovskite hollow fibers with totally dense wall were obtained with the outer diameter of 1.147 mm and the inner diameter of 0.691 mm. The dependences of the oxygen permeation on the air flow rate on the shell side, the helium flow rate on the core side, the oxygen partial pressures, and the operating temperatures were experimentally investigated. According to the Wagner theory, it follows that the oxygen transport through the U‐shaped hollow‐fiber membrane is controlled by both surface reaction and bulk diffusion at the temperature ranges of 750–950°C. High oxygen permeation flux of 3.0 ml/(min cm 2 ) was kept for about 250 h at 950°C under the conditions of the air feed flow rate of 150 ml/min and the helium flow rate of 50 ml/min. © 2010 American Institute of Chemical Engineers AIChE J, 2011
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