Oxygen production using dense ceramic hollow fiber membrane modules with different operating modes
Oxygen production using dense ceramic hollow fiber membrane modules with different operating modes
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DOI：
10.1002/aic.11116
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发表时间：
2007-04-01
期刊：
影响因子：
3.7
通讯作者：
Li, K.
中科院分区：
文献类型：
--
作者：
Tan, Xiaoyao;Li, K.
本文对La0.6Sr0.4Co0.2Fe0.8O3-α（LSCF）中空纤维膜组件在高压、吹扫气和真空三种操作模式下的制氧性能进行了理论和实验研究。结果表明，真空操作是空气制氧的最佳和最经济的操作方式。使用水蒸气的吹扫气体操作是获得高氧气生产能力的另一种选择，前提是可以解决与高温密封相关的问题。高压运行未能达到预期的制氧能力。对于LSCF中空纤维膜，下游侧的表面交换反应在低于900摄氏度的操作温度下的氧气生产中起着关键作用（c）2007美国化学工程师学会。
Oxygen production with three operating modes, i.e. high-pressure operation, sweep-gas operation, and vacuum operation, using dense La0.6Sr0.4Co0.2Fe0.8O3-alpha (LSCF) hollow fiber membrane modules has been investigated both theoretically and experimentally. The results indicate that the vacuum operation is the best and the most economical operating mode to produce oxygen from air. The sweep-gas operation using water vapor is another choice to obtain a high capacity of oxygen production, providing that problems associated with high temperature sealing can be solved. The high-pressure operation failed to achieve the expected oxygen production capacity. For the LSCF hollow fiber membranes, the surface exchange reaction at the downstream side plays a key role in the oxygen production at operating temperatures lower than 900 degrees C (c) 2007 American Institute of Chemical Engineers.