Hydrodynamic behaviour of a draft tube gas-liquid-solid spouted bed

71Citations
Citations of this article
1Readers
Mendeley users who have this article in their library.
Get full text

Abstract

Experiments were conducted using various types of solid particles to investigate the hydrodynamic properties of a gas-liquid-solid spouted bed with a draft tube. The hydrodynamic properties under study include flow modes, pressure profile and pressure drop, bubble penetration depth, overall gas holdup, apparent liquid circulation rate and bubble size distribution. Three flow modes were classified: a packed bed mode, a fluidized bed mode and a circulated bed mode. It was found that the friction factor accounting for the friction loss in the bed varies linearly on a logarithmic scale with the Reynolds number defined based on the apparent liquid circulation rate. The bubble penetration depth in the annular region, overall gas holdup and apparent liquid circulation rate increase with an increase in gas or liquid velocity. At high gas flow conditions an optimal solids loading exists which yields a maximum apparent liquid circulation rate. A model was proposed to describe the liquid circulation behaviour in the draft tube three-phas spouted bed. The average bubble size in the draft tube region is higher than that in the annular region for both the dispersed bubble regime and the coalesced bubble regime in the draft tube region. © 1984.

Cite

CITATION STYLE

APA

Fan, L. S., Hwang, S. J., & Matsuura, A. (1984). Hydrodynamic behaviour of a draft tube gas-liquid-solid spouted bed. Chemical Engineering Science, 39(12), 1677–1688. https://doi.org/10.1016/0009-2509(84)80101-3

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Save time finding and organizing research with Mendeley

Sign up for free