Mixing and Crystallization : Selected Papers From the International Conference on Mixing and Crystallization Held at Tioman Island, Malaysia in April 1998

We are honoured to present this collection of selected papers from the International Conference on Mixing and Crystallization, held at the Tioman Island, Malaysia in April, 1998. We are grateful to the editorial board comprising five eminent researchers in the field of mixing and crystallization for their thoughtful review and suggestions. In order to make this book as current as possible some of the papers have been thoroughly revised, which caused some delay in bringing out this edited version. We received necessary support from the Institute of Post Graduate Studies and Research, the University of Malaya and the Special Research Centre for Multiphase Processes, and the University of Newcastle, Australia in organizing this conference. We are indebted to the Institute of Chemical Engineers, United Kingdom, and the Institution of Engineers, Malaysia for their sponsorship. We would like to thank K.C. Lim, Dr. C. Ramakanth and Ms. Zubaidah for their help at the various stages of editing. We would also like to express our gratitude to Professor Mohd. Ali Hashim and Dr. Nafis Ahmed for their help and encouragement. Finally, I would like to thank Kluwer Academic Publishers for publishing this book. Bhaskar Sen Gupta Shaliza Ibrahim University of Malaya, Kuala Lumpur xi CFD MODELLING OF HYDRODYNAMIC CONDITIONS WITHIN THE WAKE OF MIXING IMPELLER BLADES 1 G.D. RIGByl., G. LANE . AND G.M. EVANSl. Front Matter....Pages i-xi CFD Modelling of Hydrodynamic Conditions within the Wake of Mixing Impeller Blades....Pages 1-13 Visualization and Quantification of Laminar Flow Mixing in a Stirred Tank Reactor....Pages 15-27 Turbulence Structure and Isotropy in Stirred Vessels....Pages 29-42 A Study of Agitated Gas-Liquid Reactors with Concave Blade Impellers....Pages 43-56 Studies of Aerated Mixing with Multiple Axial Flow Hydrofoil (APV-B2) Impellers....Pages 57-65 Interstage Backmixing of a Gas-Liquid Multistage, Mechanically-Agitated, Compartmented Column....Pages 67-74 Mass Transfer in a Plunging Liquid Jet....Pages 75-82 An Optimum Concentration for the Suspension of Solids in Stirred Vessels....Pages 83-94 Freeze Concentration with Ice-Lining in a Crystallizer of Agitated Vessel....Pages 95-104 How Agglomeration Processes Affect Experimentally Determined Nucleation Rates....Pages 105-112 On-Line Measurement of Solids Distribution in Stirred Tanks and Crystallizers Using Electrical Computed Tomography....Pages 113-123 A New Expression for Dispersedness of Multi-Phase Taking Account of Consideration of Local Size Distribution....Pages 125-132 Size Dependent Classification Function in Imperfectly Mixed Suspension Continuous Crystallizer....Pages 133-149 An Experimental Study to the Effects of Super-Saturation Ratio, Impeller Design and Impeller Speed on Agglomeration of Aluminum Trihydroxide....Pages 151-161 The Precipitation of Silica from Acidic Zinc Leach Liquors....Pages 163-176 Precipitation of Microcrystals of Salicylic Acid in a T Mixer: Experimental Study and Modelling....Pages 177-189 Mixing, Reaction and Precipitation: The Barium Sulphate Precipitation System....Pages 191-203 Micromixing in a Single Feed Semibatch Precipitation Process....Pages 205-213 Yield Model of a Batch Gibbsite Precipitator....Pages 215-226 Modelling a Constant Supersaturation Precipitator....Pages 227-241 How to Influence the Median Crystal Size of Precipitates....Pages 243-252 Modeling Fluctuations in the Growth Rate of a Single Crystal....Pages 253-265 Modeling the Attrition Process in a 22 Liter Draft Tube Crystallizer....Pages 267-279 Computational Fluid Dynamics Approach to Precipitation Reactions: The Importance of Subgridscale Fluctuations....Pages 281-291 Scaling-Up of Reactive Crystallizers....Pages 293-308 In-Situ Measurement Method of Crystal Concentration in a Seeded Batch Crystallizer....Pages 309-316 Monte Carlo Simulation of the Crystal Size Distribution with Attrition Effects in a Mixed Suspension Crystallizer....Pages 317-328 A Review of the Crystallization of Sugar....Pages 329-336

This book covers the latest developments in the fields of mixing and crystallization. It shows how mixing processes affect the crystallization process in general, and provides solutions to some specific cases in particular. Different mixing strategies and devices have been discussed with a particular reference to the crystallization process. The book also covers the state-of-the-art measurement techniques available for mixing intensity, nucleation, crystal growth and size distribution. The articles have been contributed by the most respected researchers in this area, and cover the frontier areas of research and development in the mixing and crystallization processes. This is unique compared to other books in this field which do not emphasize the interrelationship of the two processes. This book is a selection of papers presented at the International Conference on 'Mixing and Crystallization' held at Tioman Island, Malaysia, in 1998.
Audience: Professional engineers, researchers and graduate students involved in chemical, food, pharmaceutical and biochemical engineering.