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Numerical study of the hydrodynamics and mass transfer in the external loop airlift reactor

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dc.contributor.author Kojić, Predrag
dc.contributor.author Kojić, Jovana
dc.contributor.author Pezo, Milada
dc.contributor.author Krulj, Jelena
dc.contributor.author Pezo, Lato
dc.contributor.author Mirkov, Nikola
dc.date.accessioned 2023-08-18T13:54:38Z
dc.date.available 2023-08-18T13:54:38Z
dc.date.issued 2022
dc.identifier.issn 1451-9372
dc.identifier.uri http://oa.fins.uns.ac.rs/handle/123456789/381
dc.description.abstract The objective of this study was to investigate the hydrodynamics and the gas-liquid mass transfer coefficient of an external-loop airlift reactor (ELAR). The ELAR was operated in three cases: different inlet velocities of fluids, different alcohols solutions (water, 0.5% methanol, 0.5% ethanol, 0.5% propanol and 0.5% butanol) and different concentration of methanol in solutions (0%, 0.5%, 1%, 2% and 5%). The influence of superficial gas velocity and various diluted alcohol solutions on hydrodynamics and the gas-liquid mass transfer coefficient of the ELAR was studied. Experimentally, the gas hold-up, liquid velocities and volumetric mass transfer coefficient values in the riser and the downcomer were obtained from the literature source. A computational fluid dynamics (CFD) model was developed, based on two-phase flow, investigating different liquids regarding surface tension, assuming the ideal gas flow, applying the finite volume method and Eulerian-Eulerian model. The volumetric mass transfer coefficient was determined using the CFD and artificial neural network model. The effects of liquid parameters and gas velocity on the characteristics of the gas-liquid mass transfer were simulated. These models were compared with the appropriate experimental results. The CFD model successfully simulates the influence of different alcohols regarding the number of C-atoms on hydrodynamics and mass transfer. en_US
dc.language.iso en en_US
dc.publisher Association of Chemical Engeneers of Serbia en_US
dc.relation info:eu-repo/grantAgreement/MESTD/inst-2020/200134/RS//
dc.rights openAccess
dc.rights info:eu-repo/semantics/openAccess
dc.subject airlift reactor en_US
dc.subject hydrodynamics en_US
dc.subject mass transfer en_US
dc.subject Eulerian-Eulerian model en_US
dc.subject artificial neural network model en_US
dc.title Numerical study of the hydrodynamics and mass transfer in the external loop airlift reactor en_US
dc.type Article en_US
dc.type info:eu-repo/semantics/article
dc.identifier.scopus 2-s2.0-85131315785
dc.identifier.wos 000812264300006
dc.identifier.doi http://dx.doi.org/10.2298/CICEQ210522034K


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