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Experimental and modeling study of the O 2 ‐enrichment by perovskite fibers
Author(s) -
Hamel Christof,
SeidelMorgenstern Andreas,
Schiestel Thomas,
Werth Steffen,
Wang Haihui,
Tablet Cristina,
Caro Jürgen
Publication year - 2006
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.10934
Subject(s) - spinning , fiber , perovskite (structure) , membrane , volumetric flow rate , materials science , hollow fiber membrane , sintering , mass transport , production rate , chemical engineering , chemistry , mineralogy , thermodynamics , composite material , process engineering , engineering physics , engineering , physics , biochemistry
The production of O 2 ‐enriched air (OEA) using dense mixed conducting perovskite hollow fiber membranes was studied experimentally and theoretically. The fibers were prepared by phase inversion spinning followed by sintering. A mathematical model was developed based on the mass balances for the OEA side, the O 2 ‐depleted air side and the hollow fiber itself to simulate the O 2 ‐enrichment. Based on the experiments and the model, the mass transport in the mixed conducting material was quantified using Wagner's theory. Furthermore, 3‐D plots of broad parameter fields were calculated to estimate optimal operation conditions for a maximum O 2 ‐enrichment. The results elucidate that a required O 2 concentration in the OEA, and the production rate can be adjusted by controlling the operation parameters, such as temperature, air pressure differences and sweep air flow rates. The long term operation (800 h) indicates that the perovskite hollow fiber membranes offer a promising potential for the industrial OEA production. © 2006 American Institute of Chemical Engineers AIChE J, 2006