A pore level study of syngas production in two-layer burner formed by staggered arrangement of particles

Shi, Junrui; Mao, Mingming; Li, Houping; Liu, Yongqi; Lv, Jinsheng

doi:10.1016/j.ijhydene.2019.11.017

Cited by 9 publications

(5 citation statements)

References 24 publications

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“…i n t e r n a t i o n a l j o u r n a l o f h y d r o g e n e n e r g y x x x ( x x x x ) x x x rate of heat release becomes negative. This was expected since the RWGS reaction is moderately endothermic [19]. However, the H 2 and CO concentrations remain higher than in cases A, B and C, but in the same proportion to case A.…”

Section: Syngas Productionmentioning

confidence: 63%

“…The second approach consists of a pore-scale simulation, and involves a more in-depth modeling of the physical structure and of its interaction with the fluid in combination with reduced or detailed kinetics. With pore-scale simulations, 2D [19] and 3D [20e23] techniques are used. With regard to the 2D simulations, Shi et al [19] modeled a two-layer burner consisting of 2.5 mm and 7.5 mm beads in the upstream and downstream sections, respectively, and considered the effect of adding CO 2 to a rich methane-air mixture.…”

Section: Introductionmentioning

confidence: 99%

“…With pore-scale simulations, 2D [19] and 3D [20e23] techniques are used. With regard to the 2D simulations, Shi et al [19] modeled a two-layer burner consisting of 2.5 mm and 7.5 mm beads in the upstream and downstream sections, respectively, and considered the effect of adding CO 2 to a rich methane-air mixture. They observed a decrease in H 2 production and an increase in CO production as CO 2 was added to a rich methane-air mixture.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Numerical study of the impact of tailored porous media design on syngas production from methane-rich combustion

Roussel

Billerot²,

Lemaire³

et al. 2023

International Journal of Hydrogen Energy

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Section: Syngas Productionmentioning

confidence: 63%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Numerical study of the impact of tailored porous media design on syngas production from methane-rich combustion

Roussel

Billerot²,

Lemaire³

et al. 2023

International Journal of Hydrogen Energy

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“…In order to obtain more accurate numerical results, the pore-scale method for a numerical solution has been used. The pore-scale method can accurately study the thermal non-equilibrium of burners [10], the composition and temperature profile [11], and the flames in the pores [12]. The influence of equivalent ratio on the peak temperature in the combustion of porous media can also be calculated more accurately.…”

Section: Introductionmentioning

confidence: 99%

A Multi-Scale Numerical Model for Investigation of Flame Dynamics in a Thermal Flow Reversal Reactor

Li¹,

Mao²,

Gao³

et al. 2022

Energies

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In this paper, the flame dynamics in a thermal flow reversal reactor are studied using a multi-scale model. The challenges of the multi-scale models lie in the data exchanges between different scale models and the capture of the flame movement of the filtered combustion by the pore-scale model. Through the multi-scale method, the computational region of the porous media is divided into the inlet preheating zone, reaction zone, and outlet exhaust zone. The three models corresponding to the three zones are calculated by volume average method, pore-scale method, and volume average method respectively. Temperature distribution is used as data for real-time exchange. The results show that the multi-scale model can save computation time when compared with the pore-scale model. Compared with the volumetric average model, the multi-scale model can capture the flame front and predict the flame propagation more accurately. The flame propagation velocity increases and the flame thickness decreases with the increase of inlet flow rates and mixture concentration. In addition, the peak value of the initial temperature field and the width of the high-temperature zone also affect the flame propagation velocity and flame thickness.

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“…Similarly, by adopting the different discrete materials, it was found that the thermal efficiency of zirconia pellets was the highest at the equivalence ratio of 0.6 24 . Shi et al 25 numerically studied the two‐dimensional packed bed with staggered connected pellets. When the porosity was set to 0.4, the normalized velocity of the mixed gas in the reaction zone was 18.5 times than that in a uniformly arranged burner.…”

Section: Introductionmentioning

confidence: 99%

Inhomogeneous packed bed burner for improving the utilization of low‐concentration methane

Qian

Dai

et al. 2022

Env Prog and Sustain Energy

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Homogeneous packed bed was usually assumed in the study of porous media combustion. However, the absolute homogeneous structure was impossible in the actual application. In this article, an experimental system was established to study the inhomogeneity of porous media with different diameters and materials of pellets.The effects on the burner temperature, pollutant emissions and start-up characteristics were investigated. Results indicate that the mixed pellets of the three-diameter and four-diameter combinations improved the flame temperature and moved the flame location to the downstream. The CO emission decreased with the increasing of inlet velocity significantly, but the NO x emission increased. For the mixing of zirconia and alumina pellets, the flame temperature was increased and the flame location was close to the outlet with more zirconia pellets. In addition, an orange submerged flame appeared finally compared with the blue flame during the initial ignition of the gas at the surface.

show abstract

A pore level study of syngas production in two-layer burner formed by staggered arrangement of particles

Cited by 9 publications

References 24 publications

Numerical study of the impact of tailored porous media design on syngas production from methane-rich combustion

Numerical study of the impact of tailored porous media design on syngas production from methane-rich combustion

A Multi-Scale Numerical Model for Investigation of Flame Dynamics in a Thermal Flow Reversal Reactor

Inhomogeneous packed bed burner for improving the utilization of low‐concentration methane

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