Hydrodynamic behaviors and mixing characteristics in an internal loop airlift reactor based on CFD simulation

2016 ◽  
Vol 113 ◽  
pp. 125-139 ◽  
Author(s):  
Kiattichai Wadaugsorn ◽  
Sunun Limtrakul ◽  
Terdthai Vatanatham ◽  
Palghat A. Ramachandran
Keyword(s):  
Cfd Simulation ◽  
Airlift Reactor ◽  
Internal Loop ◽  
Mixing Characteristics ◽  
Hydrodynamic Behaviors

CFD simulation of internal-loop airlift reactor using EMMS drag model

Particuology ◽  
2015 ◽  
Vol 19 ◽  
pp. 124-132 ◽  
Author(s):  
Tingting Xu ◽  
Xuedong Jiang ◽  
Ning Yang ◽  
Jiahua Zhu
Keyword(s):  
Cfd Simulation ◽  
Airlift Reactor ◽  
Drag Model ◽  
Internal Loop

Influence of biomass on hydrodynamics of an internal loop airlift reactor

2006 ◽  
Vol 60 (6) ◽  
Author(s):  
M. Juraščík ◽  
M. Hucík ◽  
I. Sikula ◽  
J. Annus ◽  
J. Markoš
Keyword(s):  
Aspergillus Niger ◽  
Gluconic Acid ◽  
Solid Phase ◽  
Biomass Concentration ◽  
Airlift Reactor ◽  
Phase System ◽  
Two Phase ◽  
Experimental Conditions ◽  
Internal Loop ◽  
Three Phase

AbstractThe effect of the biomass presence on the overall circulation velocity, the linear velocities both in the riser and the downcomer and the overall gas hold-up was studied in a three-phase internal loop airlift reactor (ILALR). The measured data were compared with those obtained using a two-phase system (air—water). All experiments were carried out in a 40 dm3 ILALR at six different biomass concentrations (ranging from 0 g dm−3 to 7.5 g dm−3), at a temperature of 30°C, under atmospheric pressure. Air and water were used as the gas and liquid model media, respectively. Pellets of Aspergillus niger produced during the fermentation of glucose to gluconic acid in the ILALR were considered solid phase. In addition, liquid velocities were measured during the fermentation of glucose to gluconic acid using Aspergillus niger. All measurements were performed in a bubble circulation regime. At given experimental conditions the effect of the biomass on the circulation velocities in the ILALR was negligible. However, increasing of the biomass concentration led to lower values of the total gas hold-up.

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