A numerical analysis of the effect of bubble-induced liquid flow on mass transfer in bubble plumes

2010 ◽  
Author(s):  
X. B. Gong ◽  
Shu Takagi ◽  
Yoichiro Matsumoto ◽  
Liejin Guo ◽  
D. D. Joseph ◽  
...  
Keyword(s):  
Mass Transfer ◽  
Numerical Analysis ◽  
Liquid Flow ◽  
Bubble Plumes

The effect of bubble-induced liquid flow on mass transfer in bubble plumes

2009 ◽  
Vol 35 (2) ◽  
pp. 155-162 ◽  
Author(s):  
Xiaobo Gong ◽  
Shu Takagi ◽  
Yoichiro Matsumoto
Keyword(s):  
Mass Transfer ◽  
Liquid Flow ◽  
Bubble Plumes

The effect of two-phase flow regime on hydrodynamics and mass transfer in a horizontal-tube gas-liquid reactor

1985 ◽  
Vol 50 (3) ◽  
pp. 745-757 ◽  
Author(s):  
Andreas Zahn ◽  
Lothar Ebner ◽  
Kurt Winkler ◽  
Jan Kratochvíl ◽  
Jindřich Zahradník
Keyword(s):  
Mass Transfer ◽  
Pressure Drop ◽  
Flow Regime ◽  
Liquid Flow ◽  
Horizontal Tube ◽  
Liquid Holdup ◽  
Two Phase ◽  
Flow Rates ◽  
Type Relation ◽  
Good Agreement

The effect of two-phase flow regime on decisive hydrodynamic and mass transfer characteristics of horizontal-tube gas-liquid reactors (pressure drop, liquid holdup, kLaL) was determined in a cocurrent-flow experimental unit of the length 4.15 m and diameter 0.05 m with air-water system. An adjustable-height weir was installed in the separation chamber at the reactor outlet to simulate the effect of internal baffles on reactor hydrodynamics. Flow regime maps were developed in the whole range of experimental gas and liquid flow rates both for the weirless arrangement and for the weir height 0.05 m, the former being in good agreement with flow-pattern boundaries presented by Mandhane. In the whole range of experi-mental conditions pressure drop data could be well correlated as a function of gas and liquid flow rates by an empirical exponential-type relation with specific sets of coefficients obtained for individual flow regimes from experimental data. Good agreement was observed between values of pressure drop obtained for weirless arrangement and data calculated from the Lockhart-Martinelli correlation while the contribution of weir to the overall pressure drop was well described by a relation proposed for the pressure loss in closed-end tubes. In the region of negligible weir influence values of liquid holdup were again succesfully correlated by the Lockhart-Martinelli relation while the dependence of liquid holdup data on gas and liquid flow rates obtained under conditions of significant weir effect (i.e. at low flow rates of both phases) could be well described by an empirical exponential-type relation. Results of preliminary kLaL measurements confirmed the decisive effect of the rate of energy dissipation on the intensity of interfacial mass transfer in gas-liquid dispersions.

Absorption of oxygen into solutions of polymers

1986 ◽  
Vol 51 (10) ◽  
pp. 2127-2134 ◽  
Author(s):  
František Potůček ◽  
Jiří Stejskal
Keyword(s):  
Mass Transfer ◽  
Aqueous Solutions ◽  
Transfer Coefficient ◽  
Mass Transfer Coefficient ◽  
Flow Rate ◽  
Liquid Flow ◽  
Flow Curve ◽  
Liquid Flow Rate ◽  
Polymer Concentration ◽  
Newtonian Liquids

Absorption of oxygen into water and aqueous solutions of poly(acrylamides) was studied in an absorber with a wetted sphere. The effects of changes in the liquid flow rate and the polymer concentration on the liquid side mass transfer coefficient were examined. The results are expressed by correlations between dimensionless criteria modified for non-Newtonian liquids whose flow curve can be described by the Ostwald-de Waele model.

Gas-liquid flow characterization and mass transfer study in a microreactor for oligomerization catalyst testing

2021 ◽  
pp. 108476
Author(s):  
Mahmoud Kamaleddine ◽  
Dr Charles Bonnin ◽  
Dr Typhène Michel ◽  
Dr Léna Brunet-Errard ◽  
Dr Joëlle Aubin ◽  
...  
Keyword(s):  
Mass Transfer ◽  
Liquid Flow ◽  
Flow Characterization ◽  
Gas Liquid Flow ◽  
Transfer Study

Numerical modeling of large-scale bubble plumes accounting for mass transfer effects

2002 ◽  
Vol 28 (11) ◽  
pp. 1763-1785 ◽  
Author(s):  
Gustavo C. Buscaglia ◽  
Fabián A. Bombardelli ◽  
Marcelo H. Garcı́a
Keyword(s):  
Mass Transfer ◽  
Numerical Modeling ◽  
Large Scale ◽  
Transfer Effects ◽  
Bubble Plumes

scholarly journals MASS TRANSFER IN A MULTISTAGE VIBRATING DISK COLUMN WITH COCURRENT GAS-LIQUID FLOW

1974 ◽  
Vol 7 (2) ◽  
pp. 126-130 ◽  
Author(s):  
KAKUJI TOJO ◽  
KEI MIYANAMI ◽  
TAKEO YANO
Keyword(s):  
Mass Transfer ◽  
Liquid Flow ◽  
Gas Liquid Flow
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