Bubble rising velocity and bubble size distribution in columns at high pressure and temperature: From lab scale experiments to design parameters

•Bubble columns functioning at high pressure and temperature conditions.•Coalescence/breakage governs the hydrodynamics and the bubble diameter at the exit.•Scale up is possible using gas superficial velocity in saturation conditions.•Correlations for the calculation of bubble size and size distribu...

Full description

Saved in:
Bibliographic Details
Published in:Chemical engineering research & design 2021-09, Vol.173, p.108-118
Main Authors: Leonard, Clément, Ferrasse, Jean-Henry, Lefevre, Sébastien, Viand, Alain, Boutin, Olivier
Format: Article
Language:English
Subjects:
Bubble column design
Bubble columns
Bubble rising velocity correlations
Bubbles
Chemical and Process Engineering
Correlation
Design parameters
Engineering Sciences
Fluid dynamics
Heat transfer
Industrial applications
Mass transfer
Pressure
Size distribution
Studies
Temperature
Wet air oxidation
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:•Bubble columns functioning at high pressure and temperature conditions.•Coalescence/breakage governs the hydrodynamics and the bubble diameter at the exit.•Scale up is possible using gas superficial velocity in saturation conditions.•Correlations for the calculation of bubble size and size distribution are given. The design of bubble column for industrial applications is well known under near ambient pressure and temperature conditions, contrary to high pressure and temperature conditions. Accurate data on the evolution and behaviour of the bubbles is proposed as a basis for the evaluation of the surface area developed in the column and further design of such reactor. Two columns are used for the experiments: a small column (8 mL) with a total visualisation of the flow, and a bigger one (1 L), necessary for the scale up. Main results show that the influence of pressure and temperature are significant on the behaviour of bubbles and bubble size distribution and must be characterized and considered for the design of the columns in such conditions. The results allow the determination of two correlations: one for the bubble diameter and the other one for the bubble rise velocity, considering different parameters, and especially the superficial gas velocity in saturated conditions. These correlations are a basis to determine mass transfer correlations for the design of bubble column at high pressure and temperature conditions.
ISSN:0263-8762
1744-3563
DOI:10.1016/j.cherd.2021.07.003