Study of hydrodynamic behaviour in bubble columns and external loop airlift reactors through analysis of pressure fluctuations

Recent methods of regime identification based on pressure fluctuations analysis have been applied both in a bubble column and an external loop airlift reactor with several spargers. Their ability to determine regime transition and to extract regime features is compared. A new method based on the aut...

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Bibliographic Details
Published inChemical engineering science Vol. 55; no. 15; pp. 2957 - 2973
Main Authors Vial, C., Camarasa, E., Poncin, S., Wild, G., Midoux, N., Bouillard, J.
Format Journal Article
LanguageEnglish
Published Oxford Elsevier Ltd 01.08.2000
Elsevier
Subjects
Airlift
Applied sciences
Bubble column
Chemical engineering
Exact sciences and technology
Flow regime
Gas distributor
Hydrodynamics of contact apparatus
Pressure fluctuations
Flow regime
Pressure fluctuations
Airlift
Bubble column
Gas distributor
Chaos
Autocorrelation function
Gas liquid
Pressure fluctuation
Airlift reactor
Statistical analysis
Time frequency domain method
Transition conditions
Hydrodynamics
Flow field
Spectral analysis
Fractal
Time domain method
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ISSN0009-2509
1873-4405
DOI10.1016/S0009-2509(99)00551-5

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Summary:Recent methods of regime identification based on pressure fluctuations analysis have been applied both in a bubble column and an external loop airlift reactor with several spargers. Their ability to determine regime transition and to extract regime features is compared. A new method based on the auto-correlation function is proposed. This method is shown to be simple and efficient. It also provides quantitative information about the characteristic time and the axial dimension of the flow structure in the prevailing regime.
ISSN:0009-2509
1873-4405
DOI:10.1016/S0009-2509(99)00551-5