Chapter 11. Gas–Liquid Mixing in Turbulent Systems
- Edward L. Paul3,
- Victor A. Atiemo-Obeng4,
- Suzanne M. Kresta5
Published Online: 30 JAN 2004
DOI: 10.1002/0471451452.ch11
Copyright © 2004 John Wiley & Sons, Inc.
Book Title
Handbook of Industrial Mixing: Science and Practice
Additional Information
How to Cite
Middleton, J. C. and Smith, J. M. (2004) Gas–Liquid Mixing in Turbulent Systems, in Handbook of Industrial Mixing: Science and Practice (eds E. L. Paul, V. A. Atiemo-Obeng and S. M. Kresta), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/0471451452.ch11
Editor Information
- 3
Merck & Co., Inc. (retired); 308 Brooklyn Boulevard, Sea Girt, NJ 08750, USA
- 4
The Dow Chemical Company, Building 1776, Midland, MI 48674, USA
- 5
Department of Chemical and Materials Engineering, University of Alberta, Edmonton, AB, Canada T6G 2G6
Publication History
- Published Online: 30 JAN 2004
- Published Print: 14 NOV 2003
ISBN Information
Print ISBN: 9780471269199
Online ISBN: 9780471451457
- Summary
- Chapter
Keywords:
- gas–liquid mixing;
- stirred vessels;
- in-line mixers;
- gas–liquid mass transfer;
- power;
- gas–liquid impellers;
- boiling;
- bubbles;
- gas hold-up;
- gas fraction;
- gas–liquid hydrodynamics
Summary
This chapter concentrates on gas–liquid mixing in stirred vessels and static mixers operating in the turbulent regime. The emphasis is on practical applications based on the fundamentals as much as possible. It encompasses ranges of application of industrial interest, including:
Flow patterns of gas and liquid, with some remarks on the use of CFD for modelling and on high gas superficial velocities
Prediction of power: this is the key parameter in turbulent systems and it receives a full treatment
modern concave and hydrofoil impeller designs for gas–liquid mixing
Liquid mixing time
Gas–liquid mass transfer, including correlations for the mass transfer factor kLa and also the correct mean for the concentration driving force
“hot” and boiling systems
Gas voidage
brief treatments of mass transfer with reaction and of bubble size.
Where predictive absolute values cannot be obtained, correlations for scale-up from small-scale calibrating experiments are put forward. Several worked examples are provided.