Numerical study on the effects of the macropatterned active surfaces on the wall-coated steam methane reformer performances

Settar, Abdelhakim; Nebbali, Rachid; Madani, Brahim; Abboudi, Saïd

doi:10.1016/j.ijhydene.2016.05.221

Cited by 26 publications

(7 citation statements)

References 39 publications

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“…Mathematical modeling plays an important role in the development of a chemical reactor. 37–40 Computational fluid dynamics is a modeling technique with powerful visualization capabilities to deal with various geometry characteristics and boundary conditions. Due to the dramatic increase of computing power, computational fluid dynamics has become an efficient tool for reformer modeling, 41,42 and has become an increasingly important platform for reformer design.…”

Section: Model Developmentmentioning

confidence: 99%

Computational fluid dynamics modeling of the millisecond methane steam reforming in microchannel reactors for hydrogen production

et al. 2018

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Methane steam reforming coupled with methane catalytic combustion in microchannel reactors for the production of hydrogen was investigated by means of computational fluid dynamics. Special emphasis is placed on developing general guidelines for the design of integrated micro-chemical systems for the rapid production of hydrogen. Important design issues, specifically heat and mass transfer, catalyst, dimension, and flow arrangement, were explored. The relative importance of different transport phenomena was quantitatively evaluated, and some strategies for intensifying the reforming process were proposed. The results highlighted the importance of process intensification in achieving the rapid production of hydrogen. High heat and mass transfer rates derived from miniaturization of the chemical system are insufficient for process intensification. Improvement of the reforming catalyst is also essential.The efficiency of heat exchange can be improved greatly if the reactor dimension is properly designed.Thermal management is required to improve the reliability of the integrated system. Co-current heat exchange improves the thermal uniformity in the system. The catalyst loading is a key factor determining reactor performance, and must be carefully designed. Finally, engineering maps were constructed to achieve the desired power output, and favorable operating conditions for the rapid production of hydrogen were identified.

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Section: Model Developmentmentioning

confidence: 99%

Computational fluid dynamics modeling of the millisecond methane steam reforming in microchannel reactors for hydrogen production

et al. 2018

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“…13(b). 113 The macropatterned catalyst also exhibited a uniform temperature prole and enhanced methane conversion.…”

Section: Compact Integrationmentioning

confidence: 97%

Centralized and distributed hydrogen production using steam reforming: challenges and perspectives

Han

Park

Kim

et al. 2022

Sustainable Energy Fuels

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“…To save CPU time, the continuity and momentum equations are resolved and then used as input data for energy balance and species equations. The accuracy of results was examined against numerical and experimental results reported in our previous works 21 …”

Section: Numerical Simulationsmentioning

confidence: 99%

“…Thus, the optimal washcoat was found to be around 75 μm for 10% Ni catalyst. On the other hand, improving reactor design targets also to provide optimal thermal conditions due to the endothermic nature of SMR, such as the arrangement of catalyst deposition, [21][22][23] and exothermic/endothermic reaction combination. [24][25][26] In the same perspectives, the catalyst deposition and arrangement at catalytic reactor's walls are interesting paths of research to reach high H 2 production yields.…”

Section: Introductionmentioning

confidence: 99%

Performance evaluation of methane‐fueled reactor for hydrogen production: Experimental permeability measurements and reactive flow modeling

Settar

Perazzo

Chetehouna

2022

Intl J of Energy Research

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In this research, an evaluation of the performance improvement of a new reactor configuration for steam methane reforming (SMR) is carried out through a numerical-experimental approach. Two configurations of M-PCR have been studied numerically to compare the benefits. The first one consists of a conventional micro planar cell reactor (noted clear M-PCR), which is impregnated in its central axis in the direction of gas mixture flow by Ni/Al 2 O 3 catalyst. The second M-PCR configuration is equipped with nickel-based metal foam (MF) (noted M-PCR MF), which supports similar catalyst layer as for clear M-PCR configuration. The same operating conditions and catalyst weight density are set. 2D numerical solution of the transport equations was performed with a homemade code based on FORTRAN language to explore the heat and mass transfer during the SMR process. To better evaluate the nickel-based MF effects, permeability coefficients, that is, Darcy and inertial coefficients, were first measured using an experimental bench for hydrodynamic characterization of porous media. Comparison has showed that M-PCR MF configuration provides a significant enhancement in terms of hydrogen yield (73,25%). Furthermore, the catalyst layer length could be reduced by four times compared to conventional M-PCR due to MF implementation, leading to important economic improvement while keeping an interesting SMR efficiency.

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Numerical study on the effects of the macropatterned active surfaces on the wall-coated steam methane reformer performances

Cited by 26 publications

References 39 publications

Computational fluid dynamics modeling of the millisecond methane steam reforming in microchannel reactors for hydrogen production

Computational fluid dynamics modeling of the millisecond methane steam reforming in microchannel reactors for hydrogen production

Centralized and distributed hydrogen production using steam reforming: challenges and perspectives

Performance evaluation of methane‐fueled reactor for hydrogen production: Experimental permeability measurements and reactive flow modeling

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