Circulating Fluidized Bed Boilers (eBook)

Design and Operations

Prabir Basu (Autor)

eBook Download: PDF

2013 | 1. Auflage
360 Seiten
Elsevier Science (Verlag)
978-1-4832-9230-4 (ISBN)

Infos

This book provides practicing engineers and students with insight into the design and operation of circulating fluidized bed (CFB) boilers. Through a combination of theoretical concepts and practical experience, this book gives the reader a basic understanding of the many aspects of this subject.Important environmental considerations, including solid waste disposal and predicted emissions, are addressed individually in separate chapters. This book places an emphasis on combustion, hydrodynamics, heat transfer, and material issues, and illustrates these concepts with numerous examples of present applications and past experience. This book also examines the relevance of design and feed-stock parameters to the operation of a CFB boiler; designs of mechanical components, including cyclones, air distributor grids, and solid recycle systems; and special problems CVB boilers present with construction materials.

Dr. Prabir Basu, founding President of Greenfield Research Incorporated, a private research and development company in Canada that specializes in gasification and torrefaction, is an active researcher and designer of biomass energy conversion systems. Dr. Basu holds a position of Professor in Mechanical Engineering Department and is Head of Circulating Fluidized Bed Laboratory at Dalhousie University, Halifax His current research interests include frontier areas, chemical looping gasification, torrefaction, biomass cofiring amongst others.Professor Basu also founded of the prestigious triennial International Conference series on Circulating Fluidized Beds, and a private R&D company, Fluidized Bed Systems Limited that specializes on design, training and investigative services on fluidized bed boilers. Professor Basu has been working in the field of energy conversion and the environment for more than 30 years. Prior to joining the engineering faculty at Dalhousie University (formerly known as the Technical University of Nova Scotia), he worked with both a government research laboratory and a boiler manufacturing company.Dr. Basu's passion for the transformation of research results into industrial practice is well known, as is his ongoing commitment to spreading advanced knowledge around the world. He has authored more than 200 research papers and seven monographs in emerging areas of energy and environment, some of which have been translated into Chinese and Korean. He is well known internationally for providing expert advices on circulating fluidized bed boilers and conducting training courses to industries and universities across the globe.

Inhalt

Front Cover 1
Circulating Fluidized Bed Boilers: Design and Operations 4
Copyright Page 5
Table of Contents 8
Dedication 6
Preface 10
CHAPTER 1. INTRODUCTION 12
1-1 WHAT IS A CIRCULATING FLUIDIZED BED BOILER ? 15
1-2 FEATURES OF A CIRCULATING FLUIDIZED BED BOILER 17
1-3 COMPARISON OF TECHNOLOGIES 23
REFERENCES 27
CHAPTER 2. HYDRODYNAMICS 30
2-1 REGIMES OF FLUIDIZATION 31
EXAMPLE 40
SOLUTION 40
2-2 FAST FLUIDIZED BED 42
2-3 STRUCTURE OF FAST BEDS 50
2-4 GAS-SOLID MIXING 59
NOMENCLATURE 60
REFERENCES 62
CHAPTER 3. HEAT TRANSFER 66
3-1 GAS-TO-PARTICLE HEAT TRANSFER 68
3-2 BED-TO-WALL HEAT TRANSFER 73
3-3 EXTERNAL FLUID BED HEAT EXCHANGER 90
3-4 HEAT TRANSFER TO TUBES IMMERSED IN FAST BEDS 93
3-5 HEAT-TRANSFER AND PART-LOAD OPERATIONS 94
NOMENCLATURE 99
REFERENCES 102
CHAPTER 4. COMBUSTION 106
4-1 STAGES OF COAL COMBUSTION 106
4 2 COMBUSTION PROCESS IN CFB BOILERS 123
4-3 DESIGN AND PERFORMANCE MODELING OF CFB COMBUSTORS COMBUSTORS 130
NOMENCLATURE 133
REFERENCES 135
CHAPTER 5. EMISSIONS 138
5-1 AIR POLLUTION 139
5-2 SULFUR DIOXIDE EMISSION 143
5-3 NITROGEN OXIDE EMISSION 163
5-4 NITROUS OXIDE EMISSION 166
5-5 CARBON MONOXIDE EMISSION 168
NOMENCLATURE 168
REFERENCES 170
CHAPTER 6. DESIGN CONSIDERATIONS 174
6-1 STOICHIOMETRIC CALCULATIONS 175
6-2 HEAT AND MASS BALANCE 175
6-3 FURNACE DESIGN 185
6-4 DESIGN OF HEATING SURFACES 195
6-5 EXAMPLE OF THERMAL DESIGN OF A CFB BOILER 203
NOMENCLATURE 207
REFERENCES 209
CHAPTER 7. GAS-SOLID SEPARATORS 212
7-1 CYCLONES 214
7-2 INERTIAL SEPARATORS 228
NOMENCLATURE 237
REFERENCES 239
CHAPTER 8. DESIGN OF CFB COMPONENTS 240
8-1 TYPES OF NONMECHANICAL VALVES 240
8-2 DESIGN OF L-VALVE 243
8-3 DESIGN OF LOOP SEAL 247
8-4 DISTRIBUTOR PLATES 251
NOMENCLATURE 258
REFERENCES 259
CHAPTER 9. MANAGEMENT OF SOLID RESIDUES 262
9-1 NATURE OF SOLID WASTES 262
9-2 UTILIZATION OF WASTES 269
9-3 DISPOSAL OF WASTES 274
NOMENCLATURE 281
REFERENCES 282
CHAPTER 10. MATERIAL ISSUES 284
10-1 MATERIAL SELECTION CRITERIA 284
10-2 COMMONLY USED MATERIALS 291
10-3 DESIGN INNOVATIONS 295
REFERENCES 299
APPENDIX I: CHARACTERISTICS OF SOLID PARTICLES 302
1-1 SOLID PARTICLES 302
1-2 PACKING CHARACTERISTICS 306
1-3 PARTICLE CLASSIFICATION 306
1-4 TERMINAL VELOCITY OF A PARTICLE 308
1-5 FLOW-THROUGH PACKED BEDS 312
NOMENCLATURE 312
REFERENCES 313
APPENDIX II: STOICHIOMETRIC CALCULATIONS 314
II-1 CHEMICAL REACTIONS 314
II-2 AIR REQUIRED 315
II-3 SORBENT REQUIREMENT 316
II-4 SOLID WASTE PRODUCED 316
II-5 GASEOUS WASTE PRODUCTS 317
II-6 HEATING VALUE OF FUELS 320
NOMENCLATURE 323
APPENDIX III: SIMPLIFIED MODEL FOR SULFUR CAPTURE 324
NOMENCLATURE 326
APPENDIX IV: TABLES OF DESIGN DATA 328
INDEX 356

Produkt-Details

• Erscheint lt. Verlag: 22.10.2013
• Sprache: englisch
• Themenwelt: Kunst / Musik / Theater ► Design / Innenarchitektur / Mode
• Themenwelt: Naturwissenschaften ► Chemie ► Technische Chemie
• Themenwelt: Naturwissenschaften ► Physik / Astronomie ► Strömungsmechanik
• Themenwelt: Naturwissenschaften ► Physik / Astronomie ► Thermodynamik
• Themenwelt: Technik ► Maschinenbau
• ISBN-10: 1-4832-9230-4 / 1483292304
• ISBN-13: 978-1-4832-9230-4 / 9781483292304