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http://dx.doi.org/10.7842/kigas.2016.20.5.27

Characteristics of Temperature in Reformer Tube and Chemical Reaction for Steam Methane Ratio  

Han, Jun Hee (Dept. of Mechanical Systems Engineering, Chung-Ang University)
Kim, Ji Yoon (Energy Safety Research Institute of Chung-Ang University)
Lee, Seong Hyuk (Dept. of Mechanical Engineering, Chung-Ang University)
Publication Information
Journal of the Korean Institute of Gas / v.20, no.5, 2016 , pp. 27-33 More about this Journal
Abstract
The aim of numerical study is the investigation of the solid and fluid temperatures in a reformer tube and chemical reaction characteristics of different steam-carbon ratio. We considered conjugate heat transfer contain radiation, convection and conductive heat transfers. This is because steam reforming reaction of hydrocarbon occurred high temperature conditions up to 800 K- 1000 K by using commercial computational fluid dynamics (CFD) code (Fluent ver. 13.0). For numerical simulation, the Reynolds-Averaged Navier-Stokes, momentum and energy equation were employed. In addition, inside of reformer tube is assumed as the porous medium to consider the Nichrome-based catalyst. To analysis characteristics of tube temperature in chemical reaction, we changed steam-methane ratio(SCR) from 1 to 6. As increased SCR, the higher tube temperature and methane conversion were observed. It was obtained that the highest hydrogen production held in SCR of 5.
Keywords
Computational fluid dynamics; Steam-methane reforming; Steam-Carbon Ratio; Conjugate heat transfer;
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