Hold-up and flooding characteristics in a perforated rotating disc contactor (PRDC)

Dispersed phase hold-up and flooding behavior were investigated in a pilot plant scale perforated rotating disc contactor (PRDC) using three different liquid-liquid systems. The influence of various operational parameters including rotor speed, continuous and dispersed phases flow rates on flooding...

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Bibliographic Details
Published in:RSC advances 2015-01, Vol.5 (77), p.6325-6333
Main Authors: Hemmati, A. R, Shirvani, M, Torab-Mostaedi, M, Ghaemi, A
Format: Article
Language:English
Subjects:
Contactors
Correlation
Discs
Dispersion
Empirical analysis
Flooding
Phase transformations
Rotating
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Summary:Dispersed phase hold-up and flooding behavior were investigated in a pilot plant scale perforated rotating disc contactor (PRDC) using three different liquid-liquid systems. The influence of various operational parameters including rotor speed, continuous and dispersed phases flow rates on flooding velocities and hold-up have been studied. Changes in the continuous phase velocity has a minor effect on dispersed phase hold-up while increasing dispersed phase flow rate and rotor speed results in an increase in dispersed phase hold-up. Moreover, based on physical properties of liquid systems and operating conditions two empirical correlations were derived for the flooding point and dispersed phase hold-up. The proposed empirical correlations are then validated through comparing with experimental data. Therefore, due to a lack of experimental data on this type of column, these predictive empirical correlations can be used for accurate design of perforated rotating disc contactor. Dispersed phase hold-up and flooding behavior were investigated in a pilot plant scale perforated rotating disc contactor (PRDC) using three different liquid-liquid systems.
ISSN:2046-2069
2046-2069
DOI:10.1039/c5ra08938g