Numerical simulation of ion transport membrane reactors: Oxygen permeation and transport and fuel conversion

Title
Numerical simulation of ion transport membrane reactors: Oxygen permeation and transport and fuel conversion
Authors
홍종섭Kirchen, PatrickGhoniem, Ahmed
Keywords
ion transport membrane reactor; high temperature membrane reactor; oxygen permeation; numerical analysis; modeling; surface exchange; bulk diffusion
Issue Date
2012-07
Publisher
Journal of membrane science
Citation
VOL 407-408, 71-85
Abstract
Ion transport membrane (ITM) based reactors have been suggested as a novel technology for several applications including fuel reforming and oxy-fuel combustion, which integrates air separation and fuel conversion while reducing complexity and the associated energy penalty. To utilize this technology more effectively, it is necessary to develop a better understanding of the fundamental processes of oxygen transport and fuel conversion in the immediate vicinity of the membrane. In this paper, a numerical model that spatially resolves the gas flow, transport and reactions is presented. The model incorporates detailed gas phase chemistry and transport. The model is used to express the oxygen permeation flux in terms of the oxygen concentrations at the membrane surface given data on the bulk concentration, which is necessary for cases when mass transfer limitations on the permeate side are important and for reactive flow modeling. The simulation results show the dependence of oxygen transport and fuel conversion on the geometry and flow parameters including the membrane temperature, feed and sweep gas flow, oxygen concentration in the feed and fuel concentration in the sweep gas.
URI
http://pubs.kist.re.kr/handle/201004/47446
ISSN
03767388
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KIST Publication > Article
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