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

Chen, Junjie; Gao, Xuhui; Liu, Yan; Xu, Deguang

doi:10.1039/c8ra04440f

Cited by 15 publications

(8 citation statements)

References 75 publications

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“…However, the heat distribution through the reactor and post-reformer is better in the case of the TCR30. Consistent with Chen et al, 40 the results show more methane reforming to hydrogen in the small scale due to the exposure of the biomass to higher temperature. Nevertheless, the gas residence time is equal in both scales of 4−5 s.…”

Section: Resultssupporting

confidence: 91%

Upscaling of Thermo-Catalytic Reforming Process from Lab to Pilot Scale

Elmously

Jäger

Neidel

et al. 2019

Ind. Eng. Chem. Res.

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Biomass has become an important approach to meet the current requirements of energy and oil alternatives. In recent years, extensive research has been carried out on the transformation of biological wastes into biofuels and through pyrolysis, which may gradually be replacing the crude-oil resources. One promising pyrolysis route is intermediate pyrolysis. Which opens the field to the valorization of a high variety of biological residues into biofuels including gasses, liquid chemicals and carbonisate. In the present work, the Thermo-Catalytic Reforming-TCR ® technology based on intermediate pyrolysis with integrated catalytic reforming is discussed, showing high productivity and higher quality biofuels compared to traditional pyrolysis systems. This paper illustrates the data from the up-scaling of the TCR ® system from laboratory scale to pilot scale using sewage sludge as feedstock. The effects of the design differences are studied from the point of view of the qualities of products, mass and energy balances of the laboratory unit upon the pilot unit.

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Section: Resultssupporting

confidence: 91%

Upscaling of Thermo-Catalytic Reforming Process from Lab to Pilot Scale

Elmously

Jäger

Neidel

et al. 2019

Ind. Eng. Chem. Res.

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“…This result was highlighted as evaluating the cellobiose conversion for different values of Damköler number ( Da ) [ 28 ], which is defined as follows:

…”

Section: Resultsmentioning

confidence: 99%

“…To this end, computational fluid dynamics (CFD) models have been extensively used [ 27 , 28 , 29 ]. In this work, we developed a CFD model of the IEMs to simulate the effect of temperature reaction, mixture inlet velocity and enzymatic load on the WSNs washcoat on the reaction performance.…”

Section: Introductionmentioning

confidence: 99%

CFD Simulations of Microreactors for the Hydrolysis of Cellobiose to Glucose by β-Glucosidase Enzyme

et al. 2020

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The enzymatic hydrolysis of lignocellulosic biomass-derived compounds represents a valid strategy to reduce the dependence on fossil fuels, with geopolitical and environmental benefits. In particular, β-glucosidase (BG) enzyme is the bottleneck in the degradation of cellulose because it catalyzes the hydrolysis of cellobiose, a known inhibitor of the other cellulolytic enzymes. However, free enzymes are unstable, expensive and difficult to recover. For this reason, the immobilization of BG on a suitable support is crucial to improve its catalytic performance. In this paper, computational fluid dynamics (CFD) simulations were performed to test the hydrolysis reaction in a monolith channel coated by BG adsorbed on a wrinkled silica nanoparticles (WSNs) washcoat. We initially defined the physical properties of the mixture, the parameters related to kinetics and mass transfers and the initial and boundary conditions thanks to our preliminary experimental tests. Numerical simulation results have shown great similarity with the experimental ones, demonstrating the validity of this model. Following this, it was possible to explore in real time the behavior of the system, varying other specified parameters (i.e., the mixture inlet velocity or the enzymatic load on the reactor surface) without carrying out other experimental analyses.

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“…Steam methane reforming is one of the vital methods for production of hydrogen, carbon monoxide, or synthesis gas from natural gas that mainly consists of methane [1][2][3][4][5][6][7]. This is achieved in the processing setups which reacts steam5 at high temperature with methane.…”

Section: Introductionmentioning

confidence: 99%

Thermodynamic analysis of carbon formation conditions in a steam methane reforming process

Pashchenko

Gnutikova

2021

THERM SCI

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Thermodynamic equilibrium analysis of the steam methane reforming process to synthesis gas was studied. For this purpose, the system of chemical reactions for carbon production and consumation as well as other side reaction in the steam methane reforming process were analysed. The material balance and the equations of law mass action were obtained for various chemical reactions. The system of those equations were solved by dichotomy method. The investigation was performed for a wide range of operational conditions such as a temperature, pressure, and inlet steam-to-methane ratio. The results obtained, with the help of developed algorithms, were compared with the results obtained via different commercial and open-source programs. All results are in excellent agreement. The operational conditions for the probable formation of carbon were determined. It was established that for the temperature range above 1100K the probability of carbon formation is absent for steam-to-methane ratio above units. The presented algorithm of thermodynamic analysis gives an appearance of the dependence of the product composition and the amount of required heat from operating conditions such as the temperature, pressure and steam-to-methane ratio.

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

Cited by 15 publications

References 75 publications

Upscaling of Thermo-Catalytic Reforming Process from Lab to Pilot Scale

Upscaling of Thermo-Catalytic Reforming Process from Lab to Pilot Scale

CFD Simulations of Microreactors for the Hydrolysis of Cellobiose to Glucose by β-Glucosidase Enzyme

Thermodynamic analysis of carbon formation conditions in a steam methane reforming process

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