Hydrodynamics and mass transfer study of oil-water micro-emulsion in a three phase external loop airlift reactor

RSC Advances ◽  
2014 ◽  
Vol 4 (107) ◽  
pp. 62347-62355 ◽  
Author(s):  
Mostafa Keshavarz Moraveji ◽  
Jaber Gharib
Keyword(s):  
Mass Transfer ◽  
Airlift Reactor ◽  
External Loop ◽  
Three Phase ◽  
Micro Emulsion ◽  
Oil Water ◽  
Transfer Study

Hydrodynamics and mass transfer of oil–water micro-emulsion in a three phase internal airlift reactor

Fuel ◽  
2012 ◽  
Vol 97 ◽  
pp. 197-201 ◽  
Author(s):  
Mostafa Keshavarz Moraveji ◽  
Mahboubeh Jafarkhani ◽  
Baharak Sajjadi ◽  
Reza Davarnejad
Keyword(s):  
Mass Transfer ◽  
Airlift Reactor ◽  
Three Phase ◽  
Micro Emulsion ◽  
Oil Water

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

2021 ◽  
pp. 34-34
Author(s):  
Predrag Kojic ◽  
Jovana Kojic ◽  
Milada Pezo ◽  
Jelena Krulj ◽  
Lato Pezo ◽  
...  
Keyword(s):  
Mass Transfer ◽  
Transfer Coefficient ◽  
Mass Transfer Coefficient ◽  
Airlift Reactor ◽  
Volumetric Mass Transfer Coefficient ◽  
Cfd Model ◽  
Gas Velocity ◽  
Liquid Mass ◽  
External Loop ◽  
Liquid Mass Transfer

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 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 CFD model, as well as 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 appropriate experimental results. CFD model successfully succeed to simulate the influence of different alcohols regarding the number of C-atoms on hydrodynamics and mass transfer.

Mass transfer in an external-loop airlift reactor: experiments and modeling

1997 ◽  
Vol 52 (21-22) ◽  
pp. 3909-3917 ◽  
Author(s):  
H. Dhaouadi ◽  
S. Poncin ◽  
J.M. Hornut ◽  
G. Wild ◽  
P. Oinas ◽  
...  
Keyword(s):  
Mass Transfer ◽  
Airlift Reactor ◽  
External Loop

Hydrodynamics and mass transfer prediction in a three-phase airlift reactor for marine sediment biotreatment

1999 ◽  
Vol 54 (21) ◽  
pp. 5347-5354 ◽  
Author(s):  
M. Tobajas ◽  
E. Garcı́a-Calvo ◽  
M.H. Siegel ◽  
S.E. Apitz
Keyword(s):  
Mass Transfer ◽  
Marine Sediment ◽  
Airlift Reactor ◽  
Three Phase

Hydrodynamics and Mass Transfer of Oily Micro-emulsions in An External Loop Airlift Reactor

2014 ◽  
Vol 22 (3) ◽  
pp. 267-273 ◽  
Author(s):  
Mona Ebrahimi Fakhari ◽  
Mostafa Keshavarz Moraveji ◽  
Reza Davarnejad
Keyword(s):  
Mass Transfer ◽  
Airlift Reactor ◽  
External Loop
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