Numerical study of flow distribution uniformity for the optimization of gradient porosity configuration of porous copper fiber sintered felt for hydrogen production through methanol steam reforming micro-reactor

Xu, Zhijia; Song, Yang; Hu, Guanghua; Wang, Qinghui; Li, Jing‐Rong

doi:10.1016/j.ijhydene.2018.01.083

Cited by 18 publications

(2 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Apparently, the porosity and pore diameter are the physical characteristics of the catalyst. Both selectivity and yield can be reduced if the porosity is not as high as will appear to be optimum (Wang et al, 2018;Xu et al, 2018). Consequently, a reactor design in which the catalytically active surface is arranged with optimum catalyst porosity is required.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Brief research report optimization of catalyst porosity arrangements for hydrogen production in microchannel reactors by methanol reforming

Chen

2023

Front. Energy Res.

View full text Add to dashboard Cite

Optimization of catalyst porosity arrangements is carried out for hydrogen production through computational modeling of a thermally integrated microchannel reactor. The reactor has parallel flow channels for conducting simultaneous oxidation and reforming reactions. Numerical simulations are performed under a variety of velocity conditions to evaluate the effect of reforming catalyst porosity arrangement on the transport phenomena in the reactor system. The oxidation catalyst has a uniform porosity, and the porosity range of the reforming catalyst is from 30 to 70 percent. The porosity is uniform in each segmented region and the overall porosity is maintained 50 percent. The heat and mass transfer issues for the reactor system are highly complex. Performance comparisons are made in terms of methanol conversion, hydrogen yield, and heat of reaction between these porosity cases under different inlet velocity conditions. Dimensionless Nusselt and Sherwood number analyses are performed to understand the underlying cause for the performance difference. The dimensionless numbers in transport phenomena are principally analyzed to understand how important the transverse transport components are. The results indicate that optimization of catalyst porosity arrangements is required for thermal matching purposes. The optimum porosity arrangement depends upon the flow rates. The catalyst porosities must be configured to improve the kinetics in the upstream or downstream sections of the reactor so that the endothermic and exothermic processes are thermally matched. While advantages can be realized by using the two-segment design, the three-segment design yields no advantage. The processes of transverse transport are of great importance to the chemical reactions.

show abstract

Section: Introductionmentioning

confidence: 99%

“…Consequently, a reactor design in which the catalytically active surface is arranged with optimum catalyst porosity is required. Many methods allow different catalyst porosities to be applied (Wang et al, 2018;Xu et al, 2018). For example, it may be possible to decrease or increase the catalyst porosity along the flow path.…”

Section: Introductionmentioning

confidence: 99%

Brief research report optimization of catalyst porosity arrangements for hydrogen production in microchannel reactors by methanol reforming

Chen

2023

Front. Energy Res.

View full text Add to dashboard Cite

show abstract

Hydrogen generation from methanol reforming for fuel cell applications: A review

Sun

2020

J. Cent. South Univ.

View full text Add to dashboard Cite

Novel copper foam with ordered hole arrays as catalyst support for methanol steam reforming microreactor

et al. 2019

View full text Add to dashboard Cite

Numerical study of flow distribution uniformity for the optimization of gradient porosity configuration of porous copper fiber sintered felt for hydrogen production through methanol steam reforming micro-reactor

Cited by 18 publications

References 44 publications

Brief research report optimization of catalyst porosity arrangements for hydrogen production in microchannel reactors by methanol reforming

Brief research report optimization of catalyst porosity arrangements for hydrogen production in microchannel reactors by methanol reforming

Hydrogen generation from methanol reforming for fuel cell applications: A review

Novel copper foam with ordered hole arrays as catalyst support for methanol steam reforming microreactor

Contact Info

Product

Resources

About