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| Mooson Kwauk graduated from University of Shanghai in1 943 and researched in fluidization under the late ProfessorRichard Wilhelm at Princeton University from 1 945 to1947．He has continued working in this field both in theUnited States and in China，and iS now Professor andDirector Emeritus of the Institute of Process Engineering ofthe Chinese Academy of Sciences，to which he was electedMember in 1980．In 1989 he received an InternationalFluidization Award of Achievement at the Sixth International Fluidization Conference held in Banff，Canada． The author postulates an idealized system of completehomogeneity that can be used in the analysis of many engineering problems，e．g．， ·generalized fluidization with both solids and fluid in flow ·fluidized leaching and washing ·solids mixing and segregation ·operation of conical fluidized beds These problems arise in hydraulic classification according to particle size anddensity，sedimentation and classification，continuous ion exchange or adsorption，watertreatment，fluid-bed electrolysis，and biochemical processes involving granular particlesand supercritical extraction of solid materials．Professor Kwauk also expoundsalternative bubbleless gassolid contacting systems，e．g．，dilute raining particles，fastfluidization，shallow fluidized beds，and particles fluidized under the influence ofoscillating flowsome of these techniques are already replacing their bubblingpredecessors．He proposes further a method for assessing the fluidizing performance ofpowders with a view to improving their gas-solid contacting behavior in the direction ofthe idealized state through particle design． Youchu Li graduated from Tianjin University in 1962 andwas appointed to the Institute of Chemical Metallurgy（nowProcess Engineering）of the Chinese Academy of Sciences．He is now a retired professor．As a researcher and directorof the Fluidization Laboratory，he developed correlations forthe dynamics of fast fluidization，multilayer fluidized bed，gas—solid mixing，mass and heat transfer in fluidization，andhe developed processes for magnetizing roasting of low-grade and complex iron ores，calcination of non-metallicores，clean coal combustion and pyrolysis and preparation ofvarious powdered functional materials． Professor Li received several awards from the State and the Chinese Academv ofSciences，and he summarized in 2008 his more than 40 years’R&D in fluidization in amonograph，“Introduction to Fluidization Process Engineering”（in Chinese）．In thepresent publication，he contributed two addenda：one on recent studies on gas-solid flowand applications of fast fluidization and the other on the more recent area of magnetoflu—idization，both involving not a few of his own innovations． |
| Chapter 1 THE FLUIDIZED STATE 1.1 The Fluidized State and How It Is Achieved 1.2 Nature of Hydrodynamic Suspension 1.3 Particle-Particle Forces 1.4 Species of Fluidization 1.5 Regimization of the Fluidized State Chapter 2 IDEALIZATION OF THE FLUIDIZING PROCESS：Empirical Deductions from L/S Systems Chapter 3 GENERALIZED FLUIDIZATION 3.1 Steady-State Motion 3.2 Moving Bed 3.3 Accelerative Motion 3.4 Polydisperse Systems 3.5 Computer Software Chapter 4 FLUIDIZED LEACHING AND WASHING 4.1 Characteristics 4.2 Uniform Particles 4.3 Mixed Particles 4.4 Experimental Findings 4.5 Staging 4.6 Rate Measurement for Solids Leaching and Washing Chapter 5 SOLIDS MIXING AND SEGREGATION 5.1 Phase Juxtaposition 5.2 Operation Shifts 5.3 Reversal Points 5.4 Degree of Segregation 5.5 Mixing-Segregation Equilibrium 5.6 Generalized Fluidization of Polydisperse Systems Chapter 6 CONICAL FLUIDIZED BEDS 6.1 Phenomenological Description and Physical Modeling 6.2 The Basic Parameters 6.3 The Fully Fluidized State 6.4 With Hyperfluidized Fixed Bed 6.5 Ranges for Conical Fluidized Bed Operation 6.6 Charting Conical Fluidized Bed Operation and Experimenta Verification 6.7 Instability Chapter 7 APPLICATION OF THE MOVING BED 7.1 Moving Bed Uptransport with Compressible Media 7.2 The Pneumatically Controlled Downcomer Chapter 8 BUBBLELESS GAS/SOLID CONTACTING 8.1 Bubbling Fluidization and G/S Contacting Efficiency 8.2 Species of Bubbleless G/S Contacting Chapter 9 SYSTEMS WITH DILUTE RAINING PARTICLES 9.1 Raining-Particles Heat Exchanger 9.2 Polydisperse Particles 9.3 Experimental Verification 9.4 Baffling and Particles Distribution 9.5 Countercurrent Staging of Cocurrent Systems 9.6 Pilot Plant Demonstration Chapter 10 VOIDAGE DISTRIBUTION IN FAST FLUIDIZATION 10.1 Modeling Longitudinal Voidage Distribution 10.2 Evaluation of Parameters 10.3 Computing Voidage Distribution 10.4 Regime Diagram 10.5 Generalized Fluidization of Nonideal Systems 10.6 Radial Voidage Distribution Chapter 11 SHALLOW FLUIDIZED BED 11.1 Relevant Work on Distributor 11.2 Fluid Flow above Distributor 1 1.3 Particle Behavior above Distributor 11.4 Assessment of Distributor Performance 11.5 Particle-Gas Transfer in Shallow Fluid Bed 11.6 Activated Solids Shallow Fluid Bed Heat Exchanger 11.7 Cocurrent Multi-Stage Shallow Fluid Bed 11.8 The co-MSFB as a Chemical Reactor Chapter 12 FLUIDIZATION WITH NO NET FLUID FLOW 12.1 Levitation of Discrete Particles 12.2 Semi-Fluidization through Oscillatory Flow 12.3 Application to Pseudo Solid-Solid Reaction Chapter 13 A COHERENT ANALYSIS FOR L/S AND G/S SYSTEMS 13.1 From Phenomena through Hypothesis to Modeling 13.2 The Multi-Scale Energy-Minimization Model 13.3 Charting StatUS Parameters 13.4 Reconciling L／S and G／S Systems 13.5 Regimes of Fluidization Chapter 14 PoWDER ASSESSMENT 14.1 Geldarts Classification 14.2 Powder Characterization by Bed Collapsing 14.3 Modeling the Three-Stage Bed Collapsing Process 14.4 Instrument for Automatic Surface Tracking and Data Processing 14.5 Qualitative Designation for Bed Collapsing。 14.6 Quantifying Fluidizing Characteristics of Powders 14.7 Improving Fluidization by Partide Size Adjustment 14.8 Fluidizing Quality and Particle-Particle Interaction 14.9 Measure of Synergism for Binary Particle Mixtures Chapter 15 FUTURE PROSPECTS 15.1 Basic Mechanism 15.2 Further Reconciliation between G／S and L／S Systems 15.3 Polydisperse Systems and Powder Design 15.4 Intensification of L／S Operations 15.5 Staged Operation 15.6 Existing and New L／S Processes 15.7 Examples of Opportunities for Bubbleless G／S Contacting NoTATIoNS References SUBJECT INDEX ADDENDA Chapter 16 FAST FLUIDIZATION AND ITS APPLICATIoNS 16.1 Types ofFast Fluidized Bed 16.2 Gas.solid Flow in Riser 16.3 Gas.solid Flow in Downcomer 16.4 Applications ofFast Fluidization References Chapter 17 MAGNEToFLUIDIZATIoN 17.1 Types ofMagnetofluidized Bed 17.2 Structure ofMagnetofluidized Bed 17.3 Hydroelynamics ofMagnetofluidization 17.4 Mixing Behaviors 17.5 Mass andHeatTransfer 17.6 Applications ofMagnetofluidization References |
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