A unified CFD methodology for Gas-Solid fluidized beds based on the Quasi-Three-Fluid approach

Wen, Zhao-Quan; Zhang, Xibao; Luo, Zheng‐Hong

doi:10.1016/j.ces.2023.118645

Cited by 5 publications

(1 citation statement)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In Geldart-A particles, the EMMS model offers more precise simulation rather than the Gidaspow model . In addition, for Geldart-B particles, the Gidaspow model can accurately predict gas–solid flow. , Figure presents the prediction based on the Gidaspow and EMMS drag models. With superficial gas velocity increases between 7 and 11 m/s, axial distributions of the simulated solids holdup for both models are close to the experimental data.…”

Section: Simulation Descriptionmentioning

confidence: 99%

Riser Reactor with a Multistage Oxygen Feeding Strategy for the Oxidative Coupling of Methane

Cai,

Chang,

Liu

et al. 2024

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

Oxidative coupling of methane (OCM) is characterized by a high temperature and a strongly exothermic reaction. However, the desired C 2 H 4 may easily react to unwanted oxidation products. Due to vigorous gas−solids contacting, excellent heat and mass transfer characteristics, and low gas back-mixing, the riser reactor is adopted in the OCM process. Hydrodynamics and reactor performance of the riser are investigated by simulation. In the riser reactor, the excellent hydrodynamics results in a decrease in consecutive reactions and the heat is released. The multistage oxygen feeding strategy is proposed to improve reactor performance. Compared with the single-stage oxygen feeding, the C 2 yield increases by 9.5% in the three-stage oxygen feeding. Moreover, the optimal position of oxygen feeding is presented.

show abstract

Section: Simulation Descriptionmentioning

confidence: 99%

Riser Reactor with a Multistage Oxygen Feeding Strategy for the Oxidative Coupling of Methane

Cai,

Chang,

Liu

et al. 2024

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

show abstract

Investigation on the influence of particle size and porosity on solid phase fluidization and heat transfer in carbon fibre porous media

Wang,

Zhang,

Yang

2024

Can J Chem Eng

View full text Add to dashboard Cite

In this paper, the 3D pore structure was reconstructed and solid phase fluidization in porous media was investigated. Based on the two fluid model, a computational fluid dynamics (CFD) model of gas–solid fluidization was established and the influence of particle size and porosity were investigated. When porosity was constant, during the fluidization process, the particle velocity and solid concentration standard deviation gradually decreased, and the bed height increased. At the same time, the smaller the particle size was, the smaller the solid concentration standard deviation was, the faster the bed height increased, and the more the particle temperature decreased. Based on the fixed value of particle size, when studying the effect of porosity on fluidization, it was found that with the enhancement of solid‐phase fluidization, particle velocity, solid concentration standard deviation, and particle temperature decreased, and bed height increased. Moreover, when porosity was large, particle velocity decreased rapidly, and solid concentration standard deviation reached a smaller minimum value, which took a longer time. Within the same time, the particle temperature also decreased less.

show abstract

Core-shell equivalent reactor network model to bridging CFD and process simulations of a fluidized bed reactor

Du,

Cheng,

et al. 2024

Chemical Engineering Science

View full text Add to dashboard Cite

A unified CFD methodology for Gas-Solid fluidized beds based on the Quasi-Three-Fluid approach

Cited by 5 publications

References 40 publications

Riser Reactor with a Multistage Oxygen Feeding Strategy for the Oxidative Coupling of Methane

Riser Reactor with a Multistage Oxygen Feeding Strategy for the Oxidative Coupling of Methane

Investigation on the influence of particle size and porosity on solid phase fluidization and heat transfer in carbon fibre porous media

Core-shell equivalent reactor network model to bridging CFD and process simulations of a fluidized bed reactor

Contact Info

Product

Resources

About