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Simulation of Oxygen Permeability of Dual-phase Hollow Fiber Membrane

Author(s): YANG Chun-Li, XU Qi-Ming, GONG Ming, LIU Wei

Journal: Journal of Inorganic Materials
ISSN 1000-324X

Volume: 27;
Issue: 9;
Start page: 951;
Date: 2012;
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Keywords: dual-phase hollow fiber; oxygen permeation process; plug-flow model; Wagner equation

Dense Bi1.5Y0.3Sm0.2O3 (BYS)-La0.8Sr0.2MnO3–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.
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