Hydrodynamic behavior of silicon particles with a wide size distribution in a draft tube spout-fluid bed

Yue-mei, Zhang; Huang, Guoqiang; Su, Guoliang

doi:10.1016/j.cej.2017.07.071

Cited by 16 publications

(1 citation statement)

References 34 publications

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“…Saldarriaga et al carried out an experimental study on the minimum spouting velocity for the spouted beds of plant waste biomaterials. Recently, the flow behavior of ultrafine powders in the spouted bed with coarse particles was numerically studied by Sun et al Zhang et al experimentally studied the gas–solid two-phase flow of silicon particles with a wide scale distribution in a draft tube spouted bed. Wu et al − studied flow behaviors of gas and particles in three kinds of spouted beds recently: without disturbance units, with a pair of balls and with a pair of longitudinal vortex generators (LVGs).…”

Section: Introductionmentioning

confidence: 99%

Numerical Study on the Gas–Solid Flow in a Spouted Bed Installed with a Controllable Nozzle and a Swirling Flow Generator

Che

Huang

et al. 2020

ACS Omega

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The swirling flow technology is adopted on a nozzle of the spouted bed in order to enhance the radial movement of the particles. The hydrodynamic characteristics in a spouted bed with a swirling flow generator installed on the nozzle are numerically investigated based on the two-fluid model (TFM). The traditional spouted bed and spouted bed with an integral swirling blade nozzle (ISBN) are simulated and analyzed. Numerical results show that the dead zone at the cone region of the annulus can be effectively eliminated by using the ISBN. The maximum decrease in particle concentration near the cone region is 72%, and the ISBN structure can significantly improve the comprehensive fluidization degree of the spouted bed when γ equals 86°. The turbulent kinetic energy of gas can be significantly increased by the swirling flow along the radial direction in the spouted bed, especially in the spout region. Also, the swirling flow can promote the radial velocity and granular temperature of the particles in the spouted bed, which is helpful to the radial mixing of particles and gas phase between the central spout and the annulus in the spouted bed. There exists a value of ξ (equals 0.526), which brings the greatest elimination effect of the flow dead zone in the annulus of the limited spouted bed space, and the overall fluidization of the spouted bed has the best performance when ξ = 0.316.

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Section: Introductionmentioning

confidence: 99%

Numerical Study on the Gas–Solid Flow in a Spouted Bed Installed with a Controllable Nozzle and a Swirling Flow Generator

Che

Huang

et al. 2020

ACS Omega

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Effect of bed geometry on operating pressure drop and minimum fluidizing velocity in a draft tube spout‐fluid bed

Zhang

Huang

et al. 2019

Can J Chem Eng

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Operating pressure drop and minimum fluidizing velocity were studied in a flat spout-fluid bed using sub-millimetre grade silicon particles. The influence of introducing a nonporous draft tube of different configurations as well as fluidizing gas on the two parameters was investigated. A comparison of fluidizing gas systems indicated that introduced gas restrained gas bypassing to lower the minimum fluidizing velocity; however, the operating pressure drop was higher than systems without the existence of fluidizing gas. Two new correlations that took into account the effects of bed geometry and fluidizing gas on the operating pressure drop and minimum fluidizing velocity were developed based on the experimental data, which were in agreement with the present experiments.

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Research contributions of Leo A. Behie to chemical and biomedical engineering

et al. 2021

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Leo Augustus Behie was known as a dedicated teacher and mentor, a team builder, and an outstanding researcher and innovator. He had a most productive and illustrious career, spanning five decades, that covered both industrial and academic sectors. His academic research career started with tackling classical chemical engineering challenges and, with time, shifted to biotechnology and biomedical engineering. He was the founding director of a unique research laboratory for undertaking innovative biotechnology and biomedical engineering research at the University of Calgary, called the Pharmaceutical Production Research Facility (PPRF). This paper presents an overview of his academic and research accomplishments, which also included the training of 17 doctoral students, 21 master's degree students, and many postdoctoral scholars. His main research areas under the classical chemical engineering theme included the investigation of the grid region in gas–solid fluidized bed reactors; gas–liquid and liquid–solid multiphase systems; fluidized bed reactors for metals recovery from coal ash; spouted fluid‐bed reactors; kinetics of pyrolysis chemical reactions; transport phenomena in rotary drums; and reactions, thermodynamics, and reactor modelling of sulphur systems. His main research areas under the biotechnology and biomedical engineering theme included advances in biotechnology and bioreactor design; production of antibiotic and monoclonal antibody; protein production in insect cells; process development for the production of neural stem cells, cancer stem cells, and islet cells; mesenchymal stem cells; and cellular secretome studies aimed at developing a cure for Parkinson's disease.

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Hydrodynamic behavior of silicon particles with a wide size distribution in a draft tube spout-fluid bed

Cited by 16 publications

References 34 publications

Numerical Study on the Gas–Solid Flow in a Spouted Bed Installed with a Controllable Nozzle and a Swirling Flow Generator

Numerical Study on the Gas–Solid Flow in a Spouted Bed Installed with a Controllable Nozzle and a Swirling Flow Generator

Effect of bed geometry on operating pressure drop and minimum fluidizing velocity in a draft tube spout‐fluid bed

Research contributions of Leo A. Behie to chemical and biomedical engineering

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