Impacts of particle properties on gas holdup under four flow regimes in three phase bubble columns

2021 ◽  
Author(s):  
Weiling Li ◽  
Genfu Zhou ◽  
Jian Sun ◽  
Yafei Guo ◽  
Ruilin Wang
Keyword(s):  
Flow Regimes ◽  
Gas Holdup ◽  
Bubble Columns ◽  
Particle Properties ◽  
Three Phase

Flow regimes and gas holdup in paper pulp–water–gas three-phase slurry flow

2003 ◽  
Vol 58 (8) ◽  
pp. 1417-1430 ◽  
Author(s):  
T Xie ◽  
S.M Ghiaasiaan ◽  
S Karrila ◽  
T McDonough
Keyword(s):  
Flow Regimes ◽  
Gas Holdup ◽  
Paper Pulp ◽  
Slurry Flow ◽  
Three Phase ◽  
Water Gas

Gas holdup in two- and three-phase downflow bubble columns

1983 ◽  
Vol 26 (2) ◽  
pp. 95-104 ◽  
Author(s):  
Y.T. Shah ◽  
A.A. Kulkarni ◽  
J.H. Wieland ◽  
N.L. Carr
Keyword(s):  
Gas Holdup ◽  
Bubble Columns ◽  
Three Phase

scholarly journals Effect of Surfactants on Gas Holdup in Shear-Thinning Fluids

2017 ◽  
Vol 2017 ◽  
pp. 1-7 ◽  
Author(s):  
Shaobai Li ◽  
Siyuan Huang ◽  
Jungeng Fan
Keyword(s):  
Experimental Data ◽  
Liquid Phase ◽  
Sodium Dodecyl ◽  
Shear Thinning ◽  
Gas Holdup ◽  
Bubble Columns ◽  
Gas Velocity ◽  
Shear Thinning Fluids ◽  
Liquid Surface Tension ◽  
Superficial Gas Velocity

In this study, the gas holdup of bubble swarms in shear-thinning fluids was experimentally studied at superficial gas velocities ranging from 0.001 to 0.02 m·s−1. Carboxylmethyl cellulose (CMC) solutions of 0.2 wt%, 0.6 wt%, and 1.0 wt% with sodium dodecyl sulfate (SDS) as the surfactant were used as the power-law (liquid phase), and nitrogen was used as the gas phase. Effects of SDS concentration, rheological behavior, and physical properties of the liquid phase and superficial gas velocity on gas holdup were investigated. Results indicated that gas holdup increases with increasing superficial gas velocity and decreasing CMC concentration. Moreover, the addition of SDS in CMC solutions increased gas holdup, and the degree increased with the surfactant concentration. An empirical correlation was proposed for evaluating gas holdup as a function of liquid surface tension, density, effective viscosity, rheological property, superficial gas velocity, and geometric characteristics of bubble columns using the experimental data obtained for the different superficial gas velocities and CMC solution concentrations with different surfactant solutions. These proposed correlations reasonably fitted the experimental data obtained for gas holdup in this system.

Gas holdup and pressure drop for air-water flow through plate bubble columns

1986 ◽  
Vol 64 (3) ◽  
pp. 387-392 ◽  
Author(s):  
B. H. Chen ◽  
N. S. Yang ◽  
A. F. Mcmillan
Keyword(s):  
Pressure Drop ◽  
Water Flow ◽  
Gas Holdup ◽  
Bubble Columns ◽  
Flow Through

Mechanical Stresses in Bubble Columns and Airlift Loop-Reactors Operated in Two and Three Phase Modes

2004 ◽  
Vol 37 (8) ◽  
pp. 955-961 ◽  
Author(s):  
Roman Daniel Pilz ◽  
Eike Ulf Mahnke ◽  
Dietmar Christian Hempel
Keyword(s):  
Mechanical Stresses ◽  
Bubble Columns ◽  
Three Phase ◽  
Airlift Loop

scholarly journals The gas holdup in a multiphase reciprocating plate column filled with carboxymethylcellulose solutions

2005 ◽  
Vol 70 (12) ◽  
pp. 1533-1544 ◽  
Author(s):  
Ivica Stamenkovic ◽  
Olivera Stamenkovic ◽  
Ivana Bankovic-Ilic ◽  
Miodrag Lazic ◽  
Vlada Veljkovic ◽  
...  
Keyword(s):  
Liquid Phase ◽  
Power Consumption ◽  
Rheological Properties ◽  
Gas Holdup ◽  
Gas Velocity ◽  
Vibration Intensity ◽  
Three Phase ◽  
Solids Content ◽  
Superficial Gas Velocity ◽  
Plate Column

Gas holdup was investigated in a gas-liquid and gas-liquid-solid reciprocating plate column (RPC) under various operation conditions. Aqueous carboxymethyl cellulose (sodium salt, CMC) solutions were used as the liquid phase, the solid phase was spheres placed into interplate spaces, and the gas phase was air. The gas holdup in the RPC was influenced by: the vibration intensity, i.e., the power consumption, the superficial gas velocity, the solids content and the rheological properties of the liquid phase. The gas holdup increased with increasing vibration intensity and superficial gas velocity in both the two- and three-phase system. With increasing concentration of the CMC PP 50 solution (Newtonian fluid), the gas holdup decreased, because the coalescence of the bubbles was favored by the higher liquid viscosity. In the case of the CMC PP 200 solutions (non-Newtonian liquids), the gas holdup depends on the combined influence of the rheological properties of the liquid phase, the vibration intensity and the superficial gas velocity. The gas holdup in the three-phase systems was greater than that in the two-phase ones under the same operating conditions. Increasing the solids content has little influence on the gas holdup. The gas holdup was correlated with the power consumption (either the time-averaged or total power consumption) and the superficial gas velocity.

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