Bed dynamics of gas–solid fluidized bed with rod promoter--颗粒学报PARTICUOLOGY

Kumar, A., & Roy, G. K. (2007). Bed dynamics of gas–solid fluidized bed with rod promoter. China Particuology, 5(4), 261–266. https://doi.org/10.1016/j.cpart.2007.05.004

Bed dynamics of gas–solid fluidized bed with rod promoter

Awadhesh Kumar ^a, Gopendra K. Roy ^b *

a Department of Civil Engineering, National Institute of Technology, Rourkela 769008, Orissa, India
b Department of Chemical Engineering, National Institute of Technology, Rourkela 769008, Orissa, India

10.1016/j.cpart.2007.05.004

Volume 5, Issue 4, August 2007, Pages 261-266

Received 27 January 2007, Accepted 9 May 2007, Available online 19 July 2007.

E-mail: gkroy@nitrkl.ac.in

Highlights

Abstract

The dynamic characteristics of a gas–solid fluidized bed with different rod promoters have been investigated in terms of bed expansion and fluctuation, minimum fluidization velocity and distributor-to-bed pressure drop ratio at minimum fluidization velocity. Experimentation based on statistical design has been carried out and model equations using factorial design of experiments have been developed for the above mentioned quantities for a promoted gas–solid fluidized bed. The model equations have been tested with additional experimental data. The system variables include four types of rod promoters of varying blockage volume, bed particles of four sizes and four initial static bed heights. A comparison between the predicted values of the output variables using the proposed model equation with their corresponding experimental ones shows fairly good agreement.

Graphical abstract

Keywords

Dynamic characteristics; Statistical design; Gas–solid fluidization; Rod promoter

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