The effect of temperature upon minimum fluidization velocity

Desai, Akshaykumar N.; Kikukawa, Hiroshi; Pulsifer, A.H.

doi:10.1016/0032-5910(77)85032-8

Cited by 19 publications

(3 citation statements)

References 3 publications

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“…The effect of temperature has also been studied by numerous researchers [31][32][33][34][35][36][37][38][39], and Saxena and Vogel [14] and Kitano et al [40] studied the combined effects of high temperature and high pressure. Although there are still contradictions between some of the reported findings, we may tentatively summarize them as follows:…”

Section: Effect Of Pressure and Temperature On Fluidized Behaviormentioning

confidence: 99%

Fluidization and Mapping of Regimes

Kunii

1991

Fluidization Engineering

311

371

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Section: Effect Of Pressure and Temperature On Fluidized Behaviormentioning

confidence: 99%

Fluidization and Mapping of Regimes

Kunii

1991

Fluidization Engineering

311

371

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“…Assumption 1 It can be assumed that the shape factor of the cluster, <P, is given by <£ = </y </>a (3) where <fia is the shape factor of the cluster composed of spherical particles. And it is assumed that the shape of a cluster is expressed by an envelope surface of the surrounding clusters which come in touch with the cluster concerned.…”

Section: Model Presentationmentioning

confidence: 99%

Mechanism of incipient fluidization in fluidized bed at elevated temperature.

Yamazaki

Jimbo

1986

J. Chem. Eng. Japan

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A new model describing the effect of the adhesive force of particles on the bed structure in a fluidized bed is proposed. Based on this model, equations for estimating the minimumfluidization bed voidage and gas velocity were analytically derived as functions of the particle size and the adhesive force of particles. Froma comparison of theoretical values with experimental values obtained in silica sand beds with various particle sizes at temperatures up to 873 K, the analytical equations were found to give excellent predictions. The predicted values were also found to agree well with the experimental values of bed voidage at ambient conditions by Leva.

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“…In particular, the superficial fluidizing velocity at incipient fluidization has been examined to establish the dependence of the minimum fluidizing velocity, U,,,,, on temperature. Most of the works along this line are referred to in the studies by Desai et al (1977), Saxena and Vogel (1977), Pattipati and Wen (1981), and Botterill et al (1982). A number of correlations have been developed and have been assessed on the basis of available U,,,, data by Babu et al ( I 978).…”

Section: Introductionmentioning

confidence: 99%