Page 11 - Air Pollution Control Engineering

x Contents

12. Examples ...............................................................................................................52
12.1.Example 1......................................................................................................52
12.2.Example 2......................................................................................................53
Nomenclature .......................................................................................................53
References .............................................................................................................55
2 Fabric Filtration
Lawrence K. Wang, Clint Williford, and Wei-Yin Chen ......................... 59
1. Introduction ..........................................................................................................59
2. Principle and Theory ...........................................................................................60
3. Application ...........................................................................................................64
3.1. General ..........................................................................................................64
3.2. Gas Cleaning ................................................................................................64
3.3. Efficiency.......................................................................................................66
4. Engineering Design .............................................................................................68
4.1. Pretreatment of an Emission Stream........................................................68
4.2. Air-to-Cloth Ratio........................................................................................68
4.3. Fabric Cleaning Design ..............................................................................71
4.4. Baghouse Configuration ............................................................................73
4.5. Construction Materials ...............................................................................73
4.6. Design Range of Effectiveness ..................................................................74
5. Operation...............................................................................................................74
5.1. General Considerations ..............................................................................74
5.2. Collection Efficiency ...................................................................................74
5.3. System Pressure Drop ................................................................................75
5.4. Power Requirements ...................................................................................75
5.5. Filter Bag Replacement ...............................................................................76
6. Management .........................................................................................................76
6.1. Evaluation of Permit Application.............................................................76
6.2. Economics .....................................................................................................77
6.3. New Technology Awareness.....................................................................79
7. Design Examples and Questions.......................................................................80
Nomenclature .......................................................................................................92
References .............................................................................................................93
Appendix 1: HAP Emission Stream Data Form .............................................95
Appendix 2: Metric Conversions ......................................................................95
3 Cyclones
José Renato Coury, Reinaldo Pisani Jr., and Yung-Tse Hung................ 97

1. Introduction ..........................................................................................................97
2. Cyclones for Industrial Applications ...............................................................98
2.1. General Description ....................................................................................98
2.2. Correlations for Cyclone Efficiency .......................................................101
2.3. Correlations for Cyclone Pressure Drop ...............................................105
2.4. Other Relations of Interest .......................................................................106
2.5. Application Examples...............................................................................107
3. Costs of Cyclone and Auxiliary Equipment .................................................118
3.1. Cyclone Purchase Cost .............................................................................118
3.2. Fan Purchase Cost .....................................................................................119