Computational fluid dynamics and experimental validation of a compact steam methane reformer for hydrogen production from natural gas

Son Ich Ngo, Young-Il Lim, Woohyun Kim, Dong Joo Seo and Wang Lai Yoon

Applied Energy, 2019, vol. 236, issue C, 340-353

Abstract: A three-dimensional (3D) computational fluid dynamics (CFD) model of an annulus steam methane reforming (SMR) reactor was developed for producing 2.5 Nm3/h of H2 from natural gas. The feed and combustion gases played a role in a counter-current heat exchange owing to a narrow sleeve equipped between the combustor and catalytic reactor. The momentum, energy, and mass conservation equations were integrated with a realizable k–ε turbulence model, discrete ordinates radiation model, and reversible SMR reaction kinetics. The CFD results such as axial temperature profiles and producer gas compositions were validated against the experimental data measured in this study. The thermal efficiency of the compact SMR reactor was 60%, and the heat flux through the reactor wall was 39 kW/m2. The overall heat transfer coefficient from the sleeve to the catalytic reactor was 158 W/m2/K. The sleeve-type SMR reactor flattened the temperature profile along the reactor length.

Keywords: Natural gas; Hydrogen production; Steam methane reforming (SMR); Computational fluid dynamics (CFD); Temperature uniformity; Heat transfer coefficient (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (8)

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DOI: 10.1016/j.apenergy.2018.11.075

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