Hydrogen production by biomass gasification in a supercritical water fluidized bed reactor: A CFD-DEM study

Li, Zhao; Lu, Youjun

doi:10.1016/j.supflu.2017.07.022

Cited by 59 publications

(19 citation statements)

References 38 publications

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“…To accurately predict the gasification results, many scholars have developed models to obtain predictions. The CFD‐DEM model has been used in the simulation of glucose gasification, showing that a higher wall temperature and a lower flow rate are favorable for gasification . The Aspen Plus model has been used in gasification, adopting steam as the gasifying agent and showing the effects of temperature, S/B ratio, and temperature shift on the gas ingredients .…”

Section: Introductionmentioning

confidence: 99%

“…Steam gasification has drawn a great deal of attention to realize a higher H 2 /CO ratio and hydrogen yield. A substantial amount of experimental work has been performed on a downdraft gasifier with steam . Numerous simulation studies have been compared with experimental results .…”

Section: Introductionmentioning

confidence: 99%

“…The CFD-DEM model has been used in the simulation of glucose gasification, showing that a higher wall temperature and a lower flow rate are favorable for gasification. 30 The Aspen Plus model has been used in gasification, adopting steam as the gasifying agent and showing the effects of temperature, S/B ratio, and temperature shift on the gas ingredients. 27,31 A mathematical model adopting the COMMENT code has been used to analyze the effects of multifarious operating parameters.…”

Section: Introductionmentioning

confidence: 99%

“…21,24,25,30,32 Numerous simulation studies have been compared with experimental results. 23,27,30,31 However, there is no unified conclusion. In the present study, experimental work is performed on pine woodchip gasification in downdraft gasifiers, and an Aspen Plus model is used to simulate the gasification process.…”

Section: Introductionmentioning

confidence: 99%

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Investigation of biomass (pine wood) gasification: Experiments and Aspen Plus simulation

Huang

Jin

2019

Energy Science & Engineering

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Biomass gasification is currently a hot research topic. To achieve a high hydrogen content in the product gas, the gasification feedstock used in this study is air‐dried pine woodchips. Experiments are performed in a downdraft gasifier by varying the operation parameters of the particle size (60 mesh, 80 mesh, 100 mesh), temperature point (700, 750, 800, 850, 900°C), and steam‐to‐biomass mass (S/B) ratio (0, 0.7, 1.4, 2.1, 2.8). The main effects of particle size, temperature, and S/B ratio on the composition of the product gas are analyzed to predict the optimal operation parameters of biomass feedstock. For pine woodchip gasification, the optimal particle size is 80 mesh or 0.17 mm, the preferred temperature is 850°C, and the optimal S/B ratio is 1.4. Although there is an error between the experiment and the simulation, the difference is not significant. The Aspen Plus model can provide guidance for the gasification of pine woodchips and can be extended to the gasification of other kinds of biomass.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Investigation of biomass (pine wood) gasification: Experiments and Aspen Plus simulation

Huang

Jin

2019

Energy Science & Engineering

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“…About all the hydrogen production is derived from fossil fuel hydrocarbon reforming, particularly natural gas. Therefore, biomass is accepted an advantageous and sustainable option to produce hydrogen gas through gasification technologies [17,18]. Fluidized bed technology is widely used in gasification because of its various advantages including high heat transfer, uniform and controllable temperature, favorable gas-solid contact and fuel flexibility [19][20].…”

Section: Introductionmentioning

confidence: 99%

Hydrogen production from groundnut shell via circulating fluidized bed technology

Lütfüoğlu

Pehlivan

Akyürek

et al. 2021

International Journal of Energy Applications and Technologies

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In this study, hydrogen production performances of groundnut shells in a circulating fluidized bed gasifier is evaluated by employing a previously developed and validated model. Basically, we simulate a circulating fluidized bed gasification system that is connected to a water-gas shift reactor, for hydrogen purification with the gasifier temperature of 1150 K. We find that the amount of hydrogen gas produced from circulating fluidized bed gasification of groundnut shells increases from 49.25 kmol to 68.83 kmol (per 1000 kg of raw groundnut shells) when the gasifier is integrated with water-gas shift reactor. We observe that it is possible to obtain a high yield of hydrogen gas from the gasification of groundnut shells. Therefore, we conclude that the groundnut shell is a remarkable feedstock for bioenergy.

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Coupling reduced‐order modeling and coarse‐grainedCFD‐DEMto accelerate coal gasifier simulation and optimization

Shahnam

et al. 2020

AIChE Journal

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High fidelity three‐dimensional (3‐D) numerical simulations of commercial‐scale coal gasifiers are very time consuming and expensive. This article proposes a reduced‐order modeling approach that uses quasi one‐dimensional (1‐D) CFD–DEM simulation results to serve as an accurate initial condition for the 3‐D simulation, which significantly shortens the physical time from several hours to minutes to achieve steady states. The 3‐D simulation employs a previously validated coarse‐grained CFD‐DEM approach, which further accelerates the simulation. Both 1‐D and 3‐D simulations adopt a particle shrinkage scheme to correctly account for the particle volume change due to chemical reaction and thus provides an accurate bed height. Comparison with available experimental measurements of the bed temperature and synthesis gas composition is used to validate the simulation. The final syngas composition and flowrates are strongly affected by the fuel or gasification agent rate and process operating conditions as expected. This approach is then used to optimize two important operating conditions (air and steam flows) to achieve specific gasifier performance goals for the production of Fischer–Tropsch synthesis gas and production of fuel gas for gas turbines.

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Hydrogen production by biomass gasification in a supercritical water fluidized bed reactor: A CFD-DEM study

Cited by 59 publications

References 38 publications

Investigation of biomass (pine wood) gasification: Experiments and Aspen Plus simulation

Investigation of biomass (pine wood) gasification: Experiments and Aspen Plus simulation

Hydrogen production from groundnut shell via circulating fluidized bed technology

Coupling reduced‐order modeling and coarse‐grainedCFD‐DEMto accelerate coal gasifier simulation and optimization

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