Multiphase particle-in-cell simulation study of sorption enhanced steam methane reforming process in a bubbling fluidized bed reactor

Wan, Zhanghao; Yang, Shiliang; Bao, Guirong; Hu, Jianhang; Wang, Hua

doi:10.1016/j.cej.2021.132461

Cited by 28 publications

(4 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The particle dispersion coefficient ( D p ) in the fluidized bed reflects the transport intensity of mass, momentum, and energy in the dense multiphase flow, and can be evaluated by the particle trajectory . For a certain particle i , the D p is calculated by D i = false( normalΔ r i false) 2 2 normalΔ t where Δ r i is the displacement of the particle in the time internal Δ t . Figure shows the D p distribution of large and small particles along three directions over time.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Particle-Scale Simulation Study of Size-Induced Segregation Characteristics of Binary Particles in a Liquid–Solid Fluidized Bed

Sun

Yang

Bao

et al. 2023

Ind. Eng. Chem. Res.

Self Cite

View full text Add to dashboard Cite

The presence of multiple solid particles in a fluidized bed is widespread and has a significant impact on the bed hydrodynamics and heat/mass transfer. In the present work, the mixing and segregation process of premixed binary particles in a liquid–solid fluidized bed is numerically investigated via the computational fluid dynamics-discrete element method (CFD-DEM). In this method, the particles are assumed to be spherical, and their interactions and collisions are calculated using a soft-sphere model. The bed expansion height, pressure drop, and pressure distribution profile obtained by this model are well validated with experimental data. The aim of this study is to investigate particle-level information (e.g., particle velocity, dispersion coefficient and force) during the segregation process and the effect of the particle size ratio and fluidization velocity on them. The results show that particle velocity has similar distribution with the particle dispersion coefficient (D p). During the initial stage, small particles experience stronger interphase momentum exchange and thus have a higher velocity and D p. Enlarging the particle size ratio from 2 to 4, the radial particle D p and velocity increase while the axial ones decrease, indicating the enhancement of interphase momentum change along the radial direction. Increasing the liquid velocity from 0.140 to 0.170 m/s, the segregation index increases from 34.8% to 69.9%. The numerical results can provide valuable guidance for the optimization design of such apparatus in chemical operations, helping to enhance the efficiency and performance.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Force Signalsmentioning

confidence: 99%

Particle-Scale Simulation Study of Size-Induced Segregation Characteristics of Binary Particles in a Liquid–Solid Fluidized Bed

Sun

Yang

Bao

et al. 2023

Ind. Eng. Chem. Res.

Self Cite

View full text Add to dashboard Cite

show abstract

“…In MP-PIC, particles are grouped as parcels, thus reducing the number of particles, and are modelled in the Lagrangian framework. Zhanghao et al [128] adopted this model to simulate SE-SR of methane, where they analysed the impact of particle behaviours and bubble characteristics on the process performance. Fig.…”

Section: Three-fluid Cfd Modelsmentioning

confidence: 99%

“…14. Bubble distribution in the reactor described by gas species (reused from Zhanghao et al [128], with permission from Elsevier).…”

Section: Three-fluid Cfd Modelsmentioning

confidence: 99%

Modelling of Sorption-Enhanced Steam Reforming (Se-Sr) Process in Fluidised Bed Reactors for Low-Carbon Hydrogen Production: A Review

Udemu

Font-Palma

2022

SSRN Journal

View full text Add to dashboard Cite

Modeling and numerical study of particle-bubble-liquid flows using a front-tracking and discrete-element method

Xia

Zhang²,

Liu³

et al. 2023

Applied Mathematical Modelling

View full text Add to dashboard Cite

Multiphase particle-in-cell simulation study of sorption enhanced steam methane reforming process in a bubbling fluidized bed reactor

Cited by 28 publications

References 39 publications

Particle-Scale Simulation Study of Size-Induced Segregation Characteristics of Binary Particles in a Liquid–Solid Fluidized Bed

Particle-Scale Simulation Study of Size-Induced Segregation Characteristics of Binary Particles in a Liquid–Solid Fluidized Bed

Modelling of Sorption-Enhanced Steam Reforming (Se-Sr) Process in Fluidised Bed Reactors for Low-Carbon Hydrogen Production: A Review

Modeling and numerical study of particle-bubble-liquid flows using a front-tracking and discrete-element method

Contact Info

Product

Resources

About