Spouted Beds
1st Edition
Secure Checkout
Personal information is secured with SSL technology.Free Shipping
Free global shippingNo minimum order.
Description
Spouted Beds is a comprehensive 13-chapter book that covers the spouting phenomenon and the special features and applications of spouted beds. After briefly discussing the history and features of spouted bed compared to fluidized bed, the book deals with the fluid and solid dynamics of spouted beds. The book then gives a description of the internal geometrical structure of a stable bed, as well as the estimation of maximum spoutable bed depth. The subsequent chapters examine the attrition and heat and mass transfer in spouted beds, both between fluid and particles and within particles. The book further discusses theoretical aspects on using a spouting bed in carrying out gas phase chemical reaction. It also describes the application of spouted bed to a large variety of mechanical, thermal, diffusional, and chemical processes, whether on the bench, pilot, or commercial scale. This is followed by a discussion on the various process and equipment modifications to a standard spouted bed that have been devised to achieve specific ends. The final chapter outlines some practical hints for the benefit of the spouted bed designer and operator. This book is an ideal resource text to spouted bed designers, operators, and manufacturers.
Table of Contents
Preface
Acknowledgments
1 Introduction
1.1 The Spouted Bed
1.2 History
1.3 Requirements for Spouting
1.4 Spouted Beds in the Gas-Solids Contacting Spectrum
1.5 Spouting versus Fluidization
1.6 Layout of Subject Matter
2 The Onset of Spouting
2.1 Mechanism
2.2 Pressure Drop
A Interpretation of Pressure Drop Measurements
Β Peak Pressure Drop
C Spouting Pressure Drop
2.3 Minimum Spouting Velocity
A Maximum Value
Β Correlations
C Prediction for Large Beds
3 Flow Pattern of Gas
3.1 Experimental Findings
3.2 Prediction of Flow Pattern
3.3 Residence Time Distribution
4 Flow Pattern of Solids
4.1 Particle Motion in Spout
A Measurement Techniques
Β Longitudinal Profile
C Radial Profile
4.2 Particle Motion in Annulus and Recirculation
A Experimental Findings
Β Theoretical Predictions
4.3 Gross Mixing Behavior
A Experimental Findings
Β Modeling
5 Bed Structure
5.1 Spout Shape
A Experimental Observations
Β Empirical Correlations
C Theoretical Models
5.2 Voidage Distribution
A Annulus
Β Spout
6 Spouting Stability
6.1 Experimental Observations
A Effect of Column Geometry
Β Effect of Solids Properties
C Effect of Gas Flow Rate
6.2 Maximum Spoutable Bed Depth
A Controlling Mechanisms
Β Prediction Methods
7 Particle Attrition
8 Heat Transfer
8.1 Between Fluid and Particles
A Transfer Mechanism
Β Experimental Findings
C Design Equations
8.2 Between Wall and Bed
A Transfer Mechanism
Β Experimental Findings
C Proposed Theoretical Model
8.3 Between Submerged Object and Bed
A Transfer Mechanism
Β Experimental Findings
9 Mass Transfer and Drying
9.1 Mass Transfer under External Control Conditions
A Transfer Mechanism
Β Experimental Findings
9.2 Mass Transfer under Internal Control Conditions
9.3 Design Equations for Solids Drying
A Constant Rate Drying
Β Falling Rate Drying
C Intermediate Case
10 Vapor Phase Chemical Reaction
10.1 The Spouted Bed as a Chemical Reactor
10.2 Theoretical Model for Predicting Catalytic Conversion
10.3 Predicted Reactor Performance
10.4 Comparison with Fixed and Fluidized Beds
10.5 Experimental Support
11 Applications
11.1 Introduction
Physical Operations
11.2 Diffusional
A Drying of Granular Solids
Β Drying of Suspensions and Solutions
C The Spouted Bed as a Reactor-Granulator
D Particle Coating
Ε Sorption
F Potential Diffusional Operations
11.3 Thermal
A Solids Heating
Β Solids Cooling
C Food Processing
11.4 Mechanical
A Solids Blending
Β Comminution
C Potential Mechanical Operations
11.5 Solids as Reactants
A Low-Temperature Coal Carbonization
Β Shale Pyrolysis
C Iron Ore Reduction
D Cement Clinker Production
Ε Charcoal Activation
11.6 Solids as Heat Carrier or Catalyst
A Thermal Cracking of Petroleum
Β Solid Catalysis
12 Modifications and Variations
12.1 Multiple Spouting
12.2 Multistage Spouting
12.3 Pulsed Flow Spouting
12.4 Spouting with Tubular Inserts
12.5 Derivative Techniques
A Ring Spouted Bed
Β Slot Spouted Bed
C Spouting with Reverse Gas Flow in Annulus
D Spout-Fluid Bed
Ε Two-Fluid-Phase Spouting
13 Design
13.1 General Considerations
13.2 Experiments Required and Scale-Up Criteria
A Spouting Behavior
Β Rate and Equilibrium Data
C Pilot Plant Work
13.3 Some Practical Suggestions
A Gas Entrance
Β Feed and Discharge of Solids
C Bed Level Control
D Bed Support
Ε Spout Deflector
Appendix
Nomenclature
Conversion Factors
References
Subject Index
Details
- No. of pages:
- 319
- Language:
- English
- Copyright:
- © Academic Press 1974
- Published:
- 28th January 1974
- Imprint:
- Academic Press
- eBook ISBN:
- 9780323141208
About the Author
Kishan Mather
Ratings and Reviews
Request Quote
Tax Exemption
Elsevier.com visitor survey
We are always looking for ways to improve customer experience on Elsevier.com.
We would like to ask you for a moment of your time to fill in a short questionnaire, at the end of your visit.
If you decide to participate, a new browser tab will open so you can complete the survey after you have completed your visit to this website.
Thanks in advance for your time.