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http://dx.doi.org/10.7842/kigas.2014.18.4.56

Numerical Study on Steam-Methane Reaction Process in a Single Tube Considering Porous Catalyst  

Moon, Joo Hyun (Dept. of Mechanical Engineering, Chung-Ang University)
Lee, Seong Hyuk (Dept. of Mechanical Engineering, Chung-Ang University)
Yoon, Kee Bong (Dept. of Mechanical Engineering, Chung-Ang University)
Kim, Ji Yoon (ESRI(Energy.Safety Research Institute) of Chung-Ang University)
Publication Information
Journal of the Korean Institute of Gas / v.18, no.4, 2014 , pp. 56-62 More about this Journal
Abstract
The present study investigated numerically heat and mass transfer characteristics of a fixed bed reactor by using a computational fluid dynamics (CFD) code of Fluent (ver. 13.0). The temperature and species fraction were estimated for different porosities. For modeling of the catalyst in a fixed bed tube, catalysts were regarded as the porous material, and the empirical correlation of pressure drop based on the modified Eugun equation was used for simulation. In addition, the averaged porosities were taken as 0.545, 0.409, and 0.443 and compared with non-porous state. The predicted results showed that the temperature at the tube wall became higher than that estimated along the center line of tube, leading to higher hydrogen generation by the endothermic reaction and heat transfer. As the mean porosity increases, the hydrogen yield and the outlet temperature decreased because of the pressure drop inside the reformer tube.
Keywords
steam reforming reaction; fixed-bed reactor; heat transfer; computational fluid dynamics;
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Times Cited By KSCI : 1  (Citation Analysis)
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