Feasibility study of LSCF5582 membrane integration into a nitrogen based chemical looping air separation process

Paymooni, Khadijeh, Doroodchi, Elham, Motuzas, Julius, da Costa, João C. Diniz and Moghtaderi, Behdad (2017) Feasibility study of LSCF5582 membrane integration into a nitrogen based chemical looping air separation process. Chemical Engineering Research & Design, 125 96-107. doi:10.1016/j.cherd.2017.07.008


Author Paymooni, Khadijeh
Doroodchi, Elham
Motuzas, Julius
da Costa, João C. Diniz
Moghtaderi, Behdad
Title Feasibility study of LSCF5582 membrane integration into a nitrogen based chemical looping air separation process
Journal name Chemical Engineering Research & Design   Check publisher's open access policy
ISSN 0263-8762
1744-3563
Publication date 2017-09-01
Year available 2017
Sub-type Article (original research)
DOI 10.1016/j.cherd.2017.07.008
Open Access Status Not yet assessed
Volume 125
Start page 96
End page 107
Total pages 12
Place of publication London, United Kingdom
Publisher Elsevier
Language eng
Abstract This study investigates the suitability and effectiveness of La(0.5)Sr(0.5)Co(0.8)Fe(0.2)O(3-delta)4 (LSCF5582) membrane for integration into the reduction reactor of a Nitrogen based chemical looping air separation (CLAS) process for exclusive separation of oxygen. First, the structural and chemical characteristics as well as the oxygen separation properties of LSCF5582 membranes, prepared at sintering temperatures of 1050-1350 degrees C, were examined to obtain the optimum range of sintering temperatures resulting in membranes with enhanced oxygen separation from air. This was achieved by determining the oxygen permeation properties of LSCF5582 membranes under the reducing environment of the Nitrogen based CLAS process, whereby oxygen is liberated from CuO oxygen carriers on the feed side of the membrane using nitrogen as a reducing gas. Membrane characterisation results showed that a single phase dense LSCF5582 membrane was formed at the sintering temperature range of 1200-1225 degrees C obtaining a maximum oxygen permeation flux of 0.67 ml min(-1) cm(-2) and oxygen recovery of 27% at the sintering and operating temperatures of 1200 degrees C and 900 degrees C, respectively. At the same operating temperature, under the reducing environment of nitrogen, the LSCF5582 membrane sintered at 1225 C was found to perform best achieving an oxygen permeation flux and oxygen recovery of 0.77 ml min(-1) cm(-2) and 76%, respectively. (C) 2017 Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.
Keyword Characterisation
Chemical looping
CuO oxygen carrier
LSCF5582 membrane
Oxygen generation
Sintering temperature
Q-Index Code C1
Q-Index Status Provisional Code
Grant ID FT130100405
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Chemical Engineering Publications
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