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Type: Journal article
Title: Oxygen separation through U-shaped hollow fiber membrane using pure CO₂ as sweep gas
Other Titles: Oxygen separation through U-shaped hollow fiber membrane using pure CO(2) as sweep gas
Author: Wei, Y.
Tang, J.
Zhou, L.
Xue, J.
Li, Z.
Wang, H.
Citation: AIChE Journal, 2012; 58(9):2856-2864
Publisher: Wiley
Issue Date: 2012
ISSN: 0001-1541
Abstract: A number of U-shaped K 2NiF 4-type oxide hollow fiber membranes based on (Pr 0.9La 0.1) 2(Ni 0.74Cu 0.21Ga 0.05)O 4+δ (PLNCG) were successfully prepared by a phase inversion spinning process. The PLNCG hollow fiber membranes were then used to investigate the effect of CO 2 concentration in both the sweep gas and the feed air on the oxygen permeation flux. With pure CO 2 as the sweep gas and even 10% CO 2 in the feed air, a steady oxygen permeation flux of 0.9 mL/min ·cm 2 (STP) is obtained at 975°C during 310 h, and no decline of the oxygen permeation flux is observed. XRD, SEM and EDS characterizations show the spent membrane still maintains the intact microstructure and perfect K 2NiF 4-type phase structure without carbonate, which indicates that the U-shaped PLNCG hollow fiber membrane is a very stable membrane under CO 2 atmosphere and has great potential for the practical application in oxyfuel techniques for CO 2 capture and storage. © 2011 American Institute of Chemical Engineers (AIChE).
Rights: Copyright © 2011 American Institute of Chemical Engineers (AIChE)
DOI: 10.1002/aic.12802
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Chemical Engineering publications

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