On a generalized expression for prediction of minimum fluidization velocity

Narsimhan, G.

doi:10.1002/aic.690110335

Cited by 30 publications

(7 citation statements)

References 5 publications

(3 reference statements)

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“…For reliability sake the correlation developed from pressure drop is compared with some popularly used correlations (Wen and Yu, Leva, Narshiman) [26,33,34] and the statistical results are included in Table 3. These results reveal that the prediction from the proposed correlation (Eq.…”

Section: Resultsmentioning

confidence: 99%

Characteristics of Minimum Fluidization Velocity for Magnetite Powder used in an Air Dense Medium Fluidized Bed for Coal Beneficiation

Mohanta

Daram

Chakraborty

et al. 2012

Part & Part Syst Charact

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Accurate determination of minimum fluidization velocity of medium particle is essential for proper designing and operation of an Air Dense Medium Fluidized Bed Separator for coal beneficiation. Significantly different values of minimum fluidization velocity have been obtained from different available correlations. So, it is necessary to develop a suitable correlation for this specific purpose. In this study, the minimum fluidization velocities of different size magnetite powders are investigated in a 15 cm diameter fluidized bed. Three correlations are derived from the fundamental principles for the theoretical prediction of these minimum fluidization velocities. The adequacy and reliability of each of these correlations is tested by adopting a statistical analysis approach and the most suitable correlation is selected. The predictive capability of this selected correlation is verified by using the data available in the literature. The results show that this new correlation is in very well agreement with these experimental data and shown to be applicable for practical purpose. Moreover, this study reveals that the correlation developed from the basic particle properties and bed characteristics can predict more accurate results.

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Section: Resultsmentioning

confidence: 99%

Characteristics of Minimum Fluidization Velocity for Magnetite Powder used in an Air Dense Medium Fluidized Bed for Coal Beneficiation

Mohanta

Daram

Chakraborty

et al. 2012

Part & Part Syst Charact

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“…where d P is the particle diameter in feet [18]. The procedure was repeated for all the particle sizes and materials used in each of the tapered columns.…”

Section: Methodsmentioning

confidence: 99%

Minimum fluidization velocities and maximum bed pressure drops for gas–solid tapered fluidized beds

Mohanty

Biswal

2007

Chemical Engineering Journal

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“…Particulate sphericity and bed voidage can be calculated by Eqs. (4) and (5) [14], the sphericities of 51 lm quartz sand and FCC particles are 0.443 and 0.597, and their corresponding voidage is 0.648 and 0.526, respectively.…”

Section: Fluidization Behaviors Using Fcc Particlesmentioning

confidence: 99%

Fluidization Characteristics in Micro‐Fluidized Beds of Various Inner Diameters

Guo

Yue

2009

Chem Eng & Technol

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The fluidization characteristics of quartz sand and fluid catalytic crack (FCC) catalyst particles in six micro-fluidized beds with inner diameters of 4. 3, 5.5, 10.5, 15.5, 20.5, and 25.5 mm were investigated. The effects of bed diameter (D t ), static bed height (H s ), particles and gas properties on the pressure drop and minimum fluidization velocity (u mf ) were examined. The results show that the theoretical pressure drops of micro-fluidized beds deviated from the experimental values under different particles and gas properties. The possible reason is due to an increase in bed voidage under smaller bed diameters. The equations for conventional fluidized beds did not fit for micro-fluidized beds.

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On a generalized expression for prediction of minimum fluidization velocity

Cited by 30 publications

References 5 publications

Characteristics of Minimum Fluidization Velocity for Magnetite Powder used in an Air Dense Medium Fluidized Bed for Coal Beneficiation

Characteristics of Minimum Fluidization Velocity for Magnetite Powder used in an Air Dense Medium Fluidized Bed for Coal Beneficiation

Minimum fluidization velocities and maximum bed pressure drops for gas–solid tapered fluidized beds

Fluidization Characteristics in Micro‐Fluidized Beds of Various Inner Diameters

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