Investigations on the spouting stability in a prismatic spouted bed and apparatus optimization

Salikov, Vitalij; Heinrich, Stefan; Antonyuk, Sergiy; Sutkar, Vinayak S.; Deen, NG Niels; Kuipers, J.A.M.

doi:10.1016/j.apt.2015.02.011

Cited by 43 publications

(17 citation statements)

References 24 publications

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“…With CFD, the flow field of the gas in the processing apparatus can be determined, which treats the fluid phase as a continuum. In DEM, the interactions are calculated for every single particle based on models describing the physical properties of the particles, such as the adhesion, and their mechanical behavior during slow, fast, and repeated stressing [12,13].…”

Section: Introductionmentioning

confidence: 99%

CFD-DEM Simulation of a Coating Process in a Fluidized Bed Rotor Granulator

et al. 2020

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Coating of particles is a widely used technique in order to obtain the desired surface modification of the final product, e.g., specific color or taste. Especially in the pharmaceutical industry, rotor granulators are used to produce round, coated pellets. In this work, the coating process in a rotor granulator is investigated numerically using computational fluid dynamics (CFD) coupled with the discrete element method (DEM). The droplets are generated as a second particulate phase in DEM. A liquid bridge model is implemented in the DEM model to take the capillary and viscous forces during the wet contact of the particles into account. A coating model is developed, where the drying of the liquid layer on the particles, as well as the particle growth, is considered. The simulation results of the dry process compared to the simulations with liquid injection show an important influence of the liquid on the particle dynamics. The formation of liquid bridges and the viscous forces in the liquid layer lead to an increase of the average particle velocity and contact time. Changing the injection rate of water has an influence on the contact duration but no significant effect on the particle dynamics. In contrast, the aqueous binder solution has an important influence on the particle movement.

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Section: Introductionmentioning

confidence: 99%

CFD-DEM Simulation of a Coating Process in a Fluidized Bed Rotor Granulator

et al. 2020

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“…Conventional spouted beds have been used in numerous industrial processes as drying, coating, combustion and gasification [1][2][3][4][5][6][7][8][9][10]. In spite of several advantages of conventional spouted beds, there are some applications in which their performance is limited (for example in fast reactions, such as ultra-pyrolysis) [11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Detecting stability of conical spouted beds based on information entropy theory

et al. 2019

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Where a licence is displayed above, please note the terms and conditions of the licence govern your use of this document. When citing, please reference the published version. Take down policy While the University of Birmingham exercises care and attention in making items available there are rare occasions when an item has been uploaded in error or has been deemed to be commercially or otherwise sensitive.

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“…In recent decades, many experiments and calculations have been conducted to reveal the characteristics of gas‐solid two‐phase flows . Additionally, Hosseini et al.…”

Section: Introductionmentioning

confidence: 99%

“…In recent decades, many experiments and calculations have been conducted to reveal the characteristics of gas-solid twophase flows [13][14][15][16]. Additionally, Hosseini et al [17] evaluated the influence of the radial distribution function on the heattransfer behavior of a 2D spouted bed through the Eulerian-Eulerian two-fluid approach.…”

Section: Introductionmentioning

confidence: 99%

Effect of Operating Parameters on Gas‐Solid Hydrodynamics and Heat Transfer in a Spouted Bed

et al. 2019

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Through a combined computational fluid dynamics and discrete element method approach, the effect of the operating parameters on the hydrodynamics and heat‐transfer properties of gas‐solid two‐phase flows in a spouted bed are extensively investigated. Considering the high velocity in the fountain region, gas turbulence is resolved by employing the large‐eddy simulation. The rolling friction model is adopted for more precise predictions of solid behavior near the wall. Subsequently, the gas‐solid flow patterns, gas‐solid velocities, and temperature evolution are investigated. Moreover, different operating conditions and geometry configurations are evaluated with respect to heat‐transfer performance. The results provide a fundamental understanding of heat‐transfer mechanisms in spouted beds.

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Investigations on the spouting stability in a prismatic spouted bed and apparatus optimization

Cited by 43 publications

References 24 publications

CFD-DEM Simulation of a Coating Process in a Fluidized Bed Rotor Granulator

CFD-DEM Simulation of a Coating Process in a Fluidized Bed Rotor Granulator

Detecting stability of conical spouted beds based on information entropy theory

Effect of Operating Parameters on Gas‐Solid Hydrodynamics and Heat Transfer in a Spouted Bed

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