Parameters Affecting Fluidized Motion Conveying of Fly Ash

Gupta, S. K.; Agarwal, Vijay K.; Singh, Sadhna; Seshadri, V.; Mills, David

doi:10.1080/02726350903133211

Cited by 9 publications

(4 citation statements)

References 23 publications

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“…Subsequently, this author calculated the bed expansion ratio at various apparent air velocities using the Tang model. S. K. Gupta developed a fluidized motion conveying system for transporting granular materials to study operational parameter influences on material mass flow flux and bed depth [3]. H. Liu studied the influences of the structure and dimensions of flow channel bifurcation on flow distribution uniformity [4].…”

Section: Introductionmentioning

confidence: 99%

Optimization Design of Velocity Distribution in the Airways of the Fluidized Bed Based on CFD and Taguchi Algorithm

et al. 2022

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A vital component that is frequently employed in the industrial powder conveying sector is the fluidized bed. In the light of powder unloading with a fluidized bed as the research object, an orthogonal experiment with two factors and four levels was established for the structural parameters of the fluidized bed. In the case of different noise factors, 16 schemes are designed and all schemes via computational fluid dynamics numerical simulation. The Taguchi method and regression analysis are used to analyze the response. Finally, the accuracy of the optimization results is tested. The results show that gas velocity decreases sharply at the airway’s entrance and, then, gas flows to the second half of the airway and velocity decreases steadily and uniformly. Airway arc length L exerts a greater effect on the signal-to-noise ratio (SNR) than airway height H. The parameter combination of 180 mm L and 17 mm H for obtaining the optimal velocity distribution uniformity is determined. The test results indicate that the overall fluidization effect of the fluidized bed with the optimal parameters is better. The linked research findings can be used as a guide when designing a fluidized bed system for transporting comparable powder.

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Section: Introductionmentioning

confidence: 99%

Optimization Design of Velocity Distribution in the Airways of the Fluidized Bed Based on CFD and Taguchi Algorithm

et al. 2022

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“…In addition, this conveyor can be avoided from disadvantages such as pipe blockage and intermittent conveying. Therefore, the flow characteristics of fluidized gravity conveyors have also been examined [4,[10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

“…We noticed from these earlier studies [4,[11][12][13][14][15] that the powder was discharged from a hopper on the upside of a channel by the free fall, and was transported by applying air to the channel. However, if the discharge of the powder from a hopper by the free fall is not sufficient, the use of this conveying system will be limited.…”

Section: Introductionmentioning

confidence: 99%

Effect of Particle Properties on Fluidized Powder Conveying in a Horizontal Channel

Ogata

Hirose

Yamashita

2015

Procedia Engineering

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This study experimentally investigated the dense phase pneumatic conveying in a horizontal rectangular channel using the fluidizing air. The powder used the glass beads belongs to Geldart B particle, where the mean particle diameter is 127 m, the particle density is 2623kg/m 3 and the minimum fluidizing velocity is 12.3mm/s. The experimental device consists of a powder discharge vessel, a horizontal rectangular channel at the side of vessel and the air supply section at the bottom of the vessel and the horizontal channel. The powder was fluidized by air through the porous membrane of the air supply section at the bottom of the vessel and the horizontal channel. Then, this system can be conveyed the fluidized powder. As the result, we confirmed the requirement that the fluidizing air to the bottom of the powder discharge vessel was required to the powder conveying of this system, and that the fluidizing velocity at the bottom of the horizontal channel was larger than that of the minimum fluidizing velocity. This result means that the fluidizing velocity at the bottom of the vessel and the horizontal channel is important to obtain the stable powder conveying. The mass flow rate and solid loading ratio were estimated by the measured data of the mass of transported powder. In addition, these results were compared with the conveying characteristic of the glass beads of 53 m belongs to Geldart A particle. Then, the mass flow rate of Geldart A particle was higher than that of Geldart B particle. The solid loading ratio of the Geldart A particle was also greatly large to that of Geldart B particle. Therefore, we considered that the high conveying efficiency to Geldart A particle was obtained, when the dimensionless fluidizing velocities at the bottom of the powder discharge vessel and the horizontal channel were same condition.

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“…The experimental data adopted for the present study was taken as a component of a major research investigation undertaken on a fluidized motion conveying system [40,41].…”

Section: Introductionmentioning

confidence: 99%