Pressure drop and gas hold-up in an electroconductive and an inert bed with continuous liquid flow

A three-phase gas–liquid–solid system, where liquid is a continuous phase, was studied. This paper describes an investigation of the influence of gas and liquid velocity on the pressure drop through both an electroconductive and an inert bed formed by spherical glass particles ( d = 3 mm) in a recta...

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Bibliographic Details
Published in:Powder technology 2005-06, Vol.154 (1), p.1-8
Main Authors: SERBULA, S. M, ANTONIJEVIC, M. M
Format: Article
Language:English
Subjects:
Applied sciences
Chemical engineering
Electroconductive bed
Exact sciences and technology
Gas hold-up
Gas–liquid fluid
Gas–liquid–solid
Hydrodynamics of contact apparatus
Inert bed
Miscellaneous
Relative pressure drop
Solid-solid systems
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Summary:A three-phase gas–liquid–solid system, where liquid is a continuous phase, was studied. This paper describes an investigation of the influence of gas and liquid velocity on the pressure drop through both an electroconductive and an inert bed formed by spherical glass particles ( d = 3 mm) in a rectangular column with a continuous liquid flow upward. The gas phase (hydrogen) is generated during water electrolysis on an electroconductive bed of silvered glass particles. On the basis of experimental data, the mathematical dependence of the relative pressure drop on gas and liquid velocity is determined. Furthermore, a mathematical model for determination of gas hold-up is proposed for the inert bed where the physical characteristics of the gas–liquid fluid are mimicked.
ISSN:0032-5910
1873-328X
DOI:10.1016/j.powtec.2005.03.011