Rotary Kilns

1st Edition

Transport Phenomena and Transport Processes

Authors: Akwasi Boateng Akwasi Boateng
Paperback ISBN: 9780750678773
eBook ISBN: 9780080557120
Imprint: Butterworth-Heinemann
Published Date: 23rd January 2008
Page Count: 368
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Description

Rotary Kilns—rotating industrial drying ovens—are used for a wide variety of applications including processing raw minerals and feedstocks as well as heat-treating hazardous wastes. They are particularly critical in the manufacture of Portland cement. Their design and operation is critical to their efficient usage, which if done incorrectly can result in improperly treated materials and excessive, high fuel costs. This professional reference book will be the first comprehensive book in many years that treats all engineering aspects of rotary kilns, including a thorough grounding in the thermal and fluid principles involved in their operation, as well as how to properly design an engineering process that uses rotary kilns.

Chapter 1: The Rotary Kiln Evolution & Phenomenon Chapter 2: Basic Description of Rotary Kiln Operation
Chapter 3: Freeboard Aerodynamic Phenomena Chapter 4: Granular Flows in Rotary Kilns Chapter 5: Mixing & Segregation
Chapter 6: Combustion and Flame
Chapter 7: Freeboard Heat Transfer Chapter 8: Heat Transfer Processes in the Rotary Kiln Bed Chapter 9: Mass & Energy Balance Chapter 10: Rotary Kiln Minerals Process Applications

Key Features

·Covers fluid flow, granular flow, mixing and segregation, and aerodynamics during turbulent mixing and recirculation ·Offers hard-to-find guidance on fuels used for rotary kilns, including fuel options such as natural gas versus coal-fired rotary kilns ·Explains principles of combustion and flame control, heat transfer and heating and material balances

Readership

Professional Mechanical Engineers working in heating and drying processes; Chemical Engineers; Materials Engineers

Table of Contents

Chapter 1: The Rotary Kiln Evolution & Phenomenon
The Rotary Kiln Evolution Types of Rotary Kilns
Wet Kilns Long Kilns
Short Dry Kilns
Coolers and Dryers
References

Chapter 2: Basic Description of Rotary Kiln Operation

Subtopics anticipated will include but not limited to the following: Bed Phenomenon
Geometrical Features and their Transport Effects Transverse Bed Motion
Experimental Observations of Transverse Flow Behavior
Axial Motion
Dimensionless Residence Time
References

Chapter 3: Freeboard Aerodynamic Phenomena

Fluid Flow in Pipes - General Background
Basic Equations of Multicomponent Reacting Flows Development of a Turbulent Jet
Confined Jets
Swirling Jets
Precessing Jets
The Particle-laden Jet
Dust Entrainment
Induced Draft Fan
References

Chapter 4: Granular Flows in Rotary Kilns

Flow of Granular Materials (Granular Flows)
The Equations of Motion for Granular Flows
Particulate Flow Behavior in Rotary Kilns
Overview of the Observed Flow Behavior in a Rotary Drums
Modeling the Granular Flow in the Transverse Plain Particulate Flow Model in Rotary Kilns
Model Description
Simplifying Assumptions
Governing Equations for Momentum Conservation Integral Equation for Momentum Conservation
Solution of the Momentum Equation in the Active Layer of the

Details

No. of pages:
368
Language:
English
Copyright:
© Butterworth-Heinemann 2008
Published:
Imprint:
Butterworth-Heinemann
eBook ISBN:
9780080557120
Paperback ISBN:
9780750678773

About the Author

Akwasi Boateng

Dubbed “the kiln doctor”, Dr. Boateng has an MS in thermo-fluids mechanics, and a Ph.D. in metals and materials process engineering with a focus on rotary kilns from the University of New Brunswick. He has authored and/or co-authored over 90 peer reviewed publications on energy, biofuels and biochemicals, minerals and materials process engineering in flagship journals. Dr. Boateng is now a Lead Scientist with the Agricultural Research Service of the USDA pursuing research in biofuels and bioenergy.

Affiliations and Expertise

Thermochemical Conversion Science & Engineering, Sustainable Biofuels & Co-Products Research Unit, Eastern Regional Research Center, Agricultural Research Service, USDA

Akwasi Boateng

Dubbed “the kiln doctor”, Dr. Boateng has an MS in thermo-fluids mechanics, and a Ph.D. in metals and materials process engineering with a focus on rotary kilns from the University of New Brunswick. He has authored and/or co-authored over 90 peer reviewed publications on energy, biofuels and biochemicals, minerals and materials process engineering in flagship journals. Dr. Boateng is now a Lead Scientist with the Agricultural Research Service of the USDA pursuing research in biofuels and bioenergy.

Affiliations and Expertise

Thermochemical Conversion Science & Engineering, Sustainable Biofuels & Co-Products Research Unit, Eastern Regional Research Center, Agricultural Research Service, USDA