scholarly journals Effect of packed bed on mass transfer in external-loop airlift bubble column.

1996 ◽  
Vol 29 (4) ◽  
pp. 582-587 ◽  
Author(s):  
Kenji Okada ◽  
Yoshiko Nagata ◽  
Yasuharu Akagi
Keyword(s):  
Mass Transfer ◽  
Bubble Column ◽  
Packed Bed ◽  
External Loop

scholarly journals Packing size effect on the liquid circulation property in an external-loop packed bubble column

2021 ◽  
Author(s):  
Yanling Tang ◽  
Gang Luo ◽  
Zhenmin Cheng
Keyword(s):  
Mass Transfer ◽  
Transfer Coefficient ◽  
Mass Transfer Coefficient ◽  
Bubble Column ◽  
Gas Holdup ◽  
Oxygen Absorption ◽  
Liquid Mass ◽  
External Loop ◽  
Packing Size ◽  
Liquid Mass Transfer

Packing size effects on the fluid dynamics in an external-loop packed bubble column with Raschig rings of three different effective diameters (5, 14 and 41 mm) in the riser were investigated. The overall gas holdup, liquid circulating velocity and gas-liquid mass transfer coefficient were respectively measured by volume expansion method, tracer-response method and dynamic oxygen-absorption technique. CFD simulation with the Euler-Euler two-fluid method was used to predict the liquid circulating velocity by treating the packing as a porous medium. Compared to the empty column, the gas holdup was found to increase with the presence of packing, however, the liquid circulating velocity and gas-liquid mass transfer coefficient may increase or decrease. Specifically, the gas holdup increases with the decrease of packing size, while the liquid circulating velocity is on the contrary, which induces the maximal gas-liquid mass transfer rate at packing diameter of 14 mm.

Effect of Plate Geometry on Characteristics of Fluid Flow and Mass Transfer in External-Loop Airlift Bubble Column.

1999 ◽  
Vol 32 (5) ◽  
pp. 689-695 ◽  
Author(s):  
Toshiro Miyahara ◽  
Hitoshi Hamanaka ◽  
Toshiyuki Umeda ◽  
Yasuharu Akagi
Keyword(s):  
Mass Transfer ◽  
Fluid Flow ◽  
Bubble Column ◽  
External Loop ◽  
Plate Geometry

Mass transfer studies of external-loop airlifts and a bubble column

AIChE Journal ◽  
1989 ◽  
Vol 35 (3) ◽  
pp. 393-405 ◽  
Author(s):  
Milan K. Popovic ◽  
Campbell W. Robinson
Keyword(s):  
Mass Transfer ◽  
Bubble Column ◽  
External Loop ◽  
Mass Transfer Studies

Gas holdup, liquid circulating velocity and mass transfer properties in a mini-scale external loop airlift bubble column

2003 ◽  
Vol 58 (15) ◽  
pp. 3353-3360 ◽  
Author(s):  
Shaoqing Wang ◽  
Yoshihiro Arimatsu ◽  
Kenichi Koumatsu ◽  
Keiji Furumoto ◽  
Makoto Yoshimoto ◽  
...  
Keyword(s):  
Mass Transfer ◽  
Bubble Column ◽  
Gas Holdup ◽  
External Loop ◽  
Transfer Properties
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