TITLE:
CFD Simulation of Scale Influence on the Hydrodynamics of an Internal Loop Airlift Reactor
AUTHORS:
Reza Davarnejad, Ehsan Bagheripoor, Abolfazl Sahraei
KEYWORDS:
Internal Loop Airlift Reactor; Gas Hold-Up, CFD
JOURNAL NAME:
Engineering,
Vol.4 No.10,
October
10,
2012
ABSTRACT: In this work, the overall gas hold-up in the riser and down-comer of three internal airlift reactors with a working volume of 10.5, 32 and 200 l at the range of temperatures 18℃ - 21℃, under atmospheric pressure was simulated using Com-putational Fluid Dynamics (CFD). The range of superficial gas velocity was 0.5 - 3 cm/s. The three reactors geometrically were similar to each other. CFD simulation and experimental data showed that the gas hold-up in the riser and down-comer increased by increasing the reactor scale. It was concluded that the simulated data were in good agreement with the experimental ones obtained from the literature.