Page 13 - Air Pollution Control Engineering

xii Contents

Nomenclature .....................................................................................................193
References ...........................................................................................................195

5 Wet and Dry Scrubbing
Lawrence K. Wang, Jerry R. Taricska, Yung-Tse Hung,
James E. Eldridge, and Kathleen Hung Li............................................197
1. Introduction ........................................................................................................197
1.1. General Process Descriptions ..................................................................197
1.2. Wet Scrubbing or Wet Absorption .........................................................198
1.3. Dry Scrubbing or Dry Absorption..........................................................199
2. Wet Scrubbers .....................................................................................................199
2.1. Wet Absorbents or Solvents ....................................................................199
2.2. Wet Scrubbing Systems ............................................................................200
2.3. Wet Scrubber Applications ......................................................................203
2.4. Packed Tower (Wet Scrubber) Design ...................................................204
2.5. Venturi Wet Scrubber Design .................................................................215
3. Dry Scrubbers .....................................................................................................222
3.1. Dry Absorbents ..........................................................................................222
3.2. Dry Scrubbing Systems ............................................................................222
3.3. Dry Scrubbing Applications ....................................................................225
3.4. Dry Scrubber Design.................................................................................226
4. Practical Examples .............................................................................................227
Nomenclature .....................................................................................................296
References ...........................................................................................................298
Appendix: Listing of Compounds Currently Considered Hazardous ....302

6 Condensation
Lawrence K. Wang, Clint Williford, and Wei-Yin Chen .......................307

1. Introduction ........................................................................................................307
1.1. Process Description ...................................................................................307
1.2. Types of Condensing Systems ................................................................308
1.3. Range of Effectiveness ..............................................................................309
2. Pretreatment, Posttreatment, and Engineering Considerations ...............309
2.1. Pretreatment of Emission Stream ...........................................................309
2.2. Prevention of VOC Emission from Condensers ..................................311
2.3. Proper Maintenance ..................................................................................311
2.4. Condenser System Design Variables .....................................................311
3. Engineering Design ...........................................................................................311
3.1. General Design Information ....................................................................311
3.2. Estimating Condensation Temperature ................................................312
3.3. Condenser Heat Load ...............................................................................313
3.4. Condenser Size...........................................................................................314
3.5. Coolant Selection and Coolant Flow Rate.............................................315
3.6. Refrigeration Capacity..............................................................................316
3.7. Recovered Product ....................................................................................316
4. Management .......................................................................................................316
4.1. Permit Review and Application .............................................................316
4.2. Capital and Annual Costs of Condensers .............................................316