Fluidization：理想和無氣泡流態化（英文版）

　　When fluidization was first employed industrially，e.g.， in the Winkler gasifier， we had only the bubblingfluidized bed as shown in the middle diagram of thefigure， in which gas bypasses as bubbles， thus leadingto poor solid-gas contact and incurring large pressuredrop. What is ideal is the high dispersion of solidsshown asthe background of the book jacket. Short ofsuch an ideal state， we may resort to suppressing bubblesby the use of shallow fluidized bed as shown on thelefthand side diagram achieved through reducing thesolid content of the fluidized bed. or the fast fluidizedbed with continuous recycfing of solids to the bottomof the bed， as shown on the righthand side diagram. Allthese diagrams of fluidization were generated throughcomputer modeling by Professor Wei Ge， and fromhosts of these diagrams， four were selected by Xue Bai，Jianxing Lu and Ying Ren to portray the principal thesisof this book.

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