Effect of promoters on dynamics of gas–solid fluidized bed—Statistical and ANN approaches--颗粒学报PARTICUOLOGY

Mohanty, Y. K., Biswal, K. C., Roy, G. K., & Mohanty, B. P. (2007). Effect of promoters on dynamics of gas–solid fluidized bed—Statistical and ANN approaches. China Particuology, 5(6), 401–407. https://doi.org/10.1016/j.cpart.2007.09.002

Effect of promoters on dynamics of gas–solid fluidized bed—Statistical and ANN approaches

Y.K. Mohanty ^a *, K.C. Biswal ^b, G.K. Roy ^b, B.P. Mohanty ^a

a Department of Chemical Engineering, GIET, Gunupur 765 022, Rayagada, Orissa, India
b Department of Chemical Engineering, NIT, Rourkela 769008, Orissa, India

10.1016/j.cpart.2007.09.002

Volume 5, Issue 6, December 2007, Pages 401-407

Received 1 June 2007, Accepted 1 September 2007, Available online 19 November 2007.

E-mail: yashobantkumar@yahoo.com

Highlights

Abstract

In this study, a bubbling fluidized bed column, 99 mm in inside diameter and 960 mm in height, was used to investigate the effect of rod and disc promoters on fluctuation and expansion ratios. Factorial design (statistical approach) and artificial neural network (ANN) models were developed to predict the fluctuation and expansion ratios in this gas–solid fluidized bed with varying gas flow rates, bed heights, particle sizes and densities. The fluctuation and expansion predicted using these statistical and ANN models, for beds with and without promoters, were found to agree well with corresponding experiments. The statistical model was found to be superior to the ANN model due to its ability to take into account both individual and interactive effects. The rod promoters were found to be more effective in reducing bed fluctuation, and in increasing bed expansion at high gas mass velocities.

Graphical abstract

Keywords

Gas–solid fluidized bed; Fluctuation ratio; Expansion ratio; Promoter; Factorial design; Artificial neural network

文章导读