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Title
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Modeling of the performance of BSCF capillary membranes in four-end and three-end integration mode
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Author
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Abstract
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| Owing to their high surface-to-volume ratio, there has been an increasing research interest in mixed ionic electronic conducting (MIEC) capillary membranes for large-scale high temperature oxygen separation applications. They offer an energy-efficient solution for high temperature combustion processes in oxy-fuel and pre-combustion CO2 capture technologies used in fossil fuel power plants. In order to assess the effectiveness of these membranes in power plant applications, the impact of the geometry of Ba0.5Sr0.5Co0.8Fe0.2O3-delta (BSCF) capillaries on their performance in the three-end and four-end integration modes has been investigated and thoroughly discussed. The model's parameters were derived from four-end mode lab-scale experiments using gas-tight, macrovoid free and sulfur-free BSCF capillary membranes that were prepared by a phase-inversion spinning technique. The results of this modeling study revealed that in the four-end mode higher average oxygen fluxes and smaller total membrane areas can be obtained than in the three-end mode. This is due to the higher pO(2) gradient across the membrane wall. (C) 2012 Elsevier Ltd and Techna Group S.r.l. All rights reserved. |
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Language
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English
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Source (journal)
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Ceramics international. - Faenza, 1981, currens
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Publication
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Faenza
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Ceramurgica
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2013
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ISSN
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0272-8842
[print]
1873-3956
[online]
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DOI
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10.1016/J.CERAMINT.2012.10.266
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Volume/pages
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39
:4
(2013)
, p. 4113-4123
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ISI
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000318129100084
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Full text (Publisher's DOI)
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Full text (publisher's version - intranet only)
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