Investigation of the characteristics of a compact steam reformer integrated with a water-gas shift reactor

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The objective of this study is to investigate numerically a compact steam methane reforming (SMR) system integrated with a water-gas shift (WGS) reactor. Separate numerical models are established for the combustion part, SMR and WGS reaction bed. The concentration of species at the exits of the SMR and WGS bed, and the temperatures in the WGS bed are in good agreement with the measured data. Heat transfer to the catalyst beds and the catalytic reactions in the SMR and WGS catalyst bed are investigated as a function of the operation parameters. The conversion of methane at the exit of the SMR. catalyst bed is calculated to be 87%, and the carbon monoxide concentration at the outlet of the WGS bed is estimated to be 0.45%. The effects of the cooling heat flux at the outside wall of the system and steam-to-carbon (S/C) ratio are also examined. As the cooling heat flux increases, both the methane conversion and carbon monoxide content are reduced in the SMR bed, and the carbon monoxide conversion is improved in the WGS bed. Both methane conversion and carbon dioxide reduction increase with increasing steam-to-carbon ratio. (c) 2006 Elsevier B.V. All rights reserved.
Publisher
ELSEVIER SCIENCE BV
Issue Date
2006-10
Language
English
Article Type
Article
Keywords

KINETICS; SIMULATION; CATALYST; MODEL

Citation

JOURNAL OF POWER SOURCES, v.161, no.2, pp.1208 - 1216

ISSN
0378-7753
DOI
10.1016/j.jpowsour.2006.05.039
URI
http://hdl.handle.net/10203/93323
Appears in Collection
ME-Journal Papers(저널논문)
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