scholarly journals A High-Fidelity CFD Model of Methane Steam Reforming in a Packed Bed Reactor

2009 ◽  
Vol 42 (Supplement.) ◽  
pp. s73-s78 ◽  
Author(s):  
Mayu Kuroki ◽  
Shinichi Ookawara ◽  
Kohei Ogawa
Keyword(s):  
Steam Reforming ◽  
Packed Bed ◽  
Packed Bed Reactor ◽  
Methane Steam Reforming ◽  
High Fidelity ◽  
Cfd Model ◽  
Methane Steam

Development of a CFD model for the simulation of tar and methane steam reforming through a ceramic catalytic filter

2015 ◽  
Vol 40 (25) ◽  
pp. 7991-8004 ◽  
Author(s):  
E. Savuto ◽  
A. Di Carlo ◽  
E. Bocci ◽  
A. D'Orazio ◽  
M. Villarini ◽  
...  
Keyword(s):  
Steam Reforming ◽  
Methane Steam Reforming ◽  
Cfd Model ◽  
Methane Steam ◽  
Catalytic Filter

scholarly journals Sensitivity analysis and optimization of a membrane reactor for hydrogen production through methane steam reforming

2020 ◽  
Vol 5 (6) ◽  
Author(s):  
Igor Nardi Caxiano ◽  
Lizandro De Sousa Santos ◽  
Diego Martinez Prata
Keyword(s):  
Hydrogen Production ◽  
Steam Reforming ◽  
Methane Conversion ◽  
Membrane Reactor ◽  
Packed Bed ◽  
Operating Conditions ◽  
Methane Steam Reforming ◽  
Maximum Efficiency ◽  
Promising Alternative ◽  
Methane Steam

Hydrogen is one of most studied sources for clean power generation in the near future. Nowadays, hydrogen is mainly produced through methane steam reforming in packed bed reactors, with a promising alternative to this technology being the implementation of hydrogen-selective membrane reactors. This work compares the isothermal mathematical models of both designs by assessing the effects of multiple design variables on methane conversion, while also providing recommended operating conditions for maximum efficiency of the membrane reactor over the packed bed technology. Additionally, an optimization study is carried by dividing the reactor length in isothermal segments to achieve higher efficiency. Results showed that the membrane technology considerably increases hydrogen production, with temperature being the most influential variable on methane conversion. While the temperature profile optimization provided similar conversions compared to the isothermal models, the membrane reactor’s efficiency was increased, further justifying its implementation.

scholarly journals A Study on CO2 Methanation and Steam Methane Reforming over Commercial Ni/Calcium Aluminate Catalysts

Energies ◽  
2020 ◽  
Vol 13 (11) ◽  
pp. 2792 ◽  
Author(s):  
Gabriella Garbarino ◽  
Federico Pugliese ◽  
Tullio Cavattoni ◽  
Guido Busca ◽  
Paola Costamagna
Keyword(s):  
Steam Reforming ◽  
Operating Conditions ◽  
Packed Bed Reactor ◽  
Methane Steam Reforming ◽  
Hydrogen Yield ◽  
Reactor Model ◽  
Co2 Methanation ◽  
Methane Steam ◽  
Reforming Catalysts ◽  
Steam Reforming Catalysts

Three Ni-based natural gas steam reforming catalysts, i.e., commercial JM25-4Q and JM57-4Q, and a laboratory-made catalyst (26% Ni on a 5% SiO2–95% Al2O3), are tested in a laboratory reactor, under carbon dioxide methanation and methane steam reforming operating conditions. The laboratory catalyst is more active in both CO2 methanation (equilibrium is reached at 623 K with 100% selectivity) and methane steam reforming (92% hydrogen yield at 890 K) than the two commercial catalysts, likely due to its higher nickel loading. In any case, commercial steam reforming catalysts also show interesting activity in CO2 methanation, reduced by K-doping. The interpretation of the experimental results is supported by a one-dimensional (1D) pseudo-homogeneous packed-bed reactor model, embedding the Xu and Froment local kinetics, with appropriate kinetic parameters for each catalyst. In particular, the H2O adsorption coefficient adopted for the commercial catalysts is about two orders of magnitude higher than for the laboratory-made catalyst, and this is in line with the expectations, considering that the commercial catalysts have Ca and K added, which may promote water adsorption.

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