C. M. van 't Land

Drying in the Process Industry

• Gebundenes Buch

Produktbeschreibung

Among those interested in drying are chemical engineers, energy specialists, and mechanical engineers. This book assists the process development engineer, the process engineer, and the plant engineer in selecting drying equipment. It discusses the criteria to be observed, the gathering of results of relevant laboratory measurements, the carrying out of small-scale tests (the results of which can be scaled up), and procedures for sizing equipment. Written by an author with over four decades in the process industries, this book brings an extensively practical approach for the engineer.

Produktdetails

• Verlag: Wiley & Sons
• 1. Auflage
• Seitenzahl: 400
• Erscheinungstermin: 20. Dezember 2011
• Englisch
• Abmessung: 235mm x 157mm x 26mm
• Gewicht: 658g
• ISBN-13: 9780470131176
• ISBN-10: 0470131179
• Artikelnr.: 34161151

Autorenporträt

C.M. VAN 'T LAND has run the seminar and consulting company Van 't Land Processing since 1999. Prior to that, he worked at Akzo Nobel Chemicals from 1968-2000 as process engineer, and later, process development manager and project leader. He is the author of Industrial Drying Equipment: Selection and Application and Industrial Crystallization of Melts.

Inhaltsangabe

Preface ix 1 Introduction 1 2 Drying as Part of the Overall Process 9 2.1 Residual Moisture
9 2.2 Optimization of the Dewatering Step
10 2.3 Process Changes to Simplify Drying
10 2.4 Combination of Drying and Other Process Steps
12 2.5 Nonthermal Drying
15 2.6 Process Changes to Avoid Drying
17 2.7 No Drying
19 3 Procedures for Choosing a Dryer 21 3.1 Selection Schemes
21 3.2 Processing Liquids, Slurries, and Pastes
31 3.3 Special Drying Techniques
33 3.4 Some Additional Comments
34 3.5 Testing on Small-Scale Dryers
37 3.6 Examples of Dryer Selection
38 4 Convective Drying 41 4.1 Common Aspects of Continuous Convective Dryers
42 4.2 Saturated Water Vapor Pressure
43 4.3 Wet-Bulb Temperature
44 4.4 Adiabatic Saturation Temperature
46 4.5 Humidity Chart
47 4.6 Water-Material Interactions
49 4.7 Drying with an Auxiliary Material
52 4.8 Gas Velocities
54 4.9 Heat Losses
55 4.10 Electrical Energy Consumption
57 4.11 Miscellaneous Aspects
59 4.12 Material Balance (kg·h-1)
61 4.13 Heat Balance (kJ·h-1)
61 4.14 Specific Heat of Solids
63 4.15 Gas Flows and Fan Power
64 4.16 Direct Heating of Drying Air
65 5 Continuous Fluid-Bed Drying 67 5.1 General Description
67 5.2 Fluidization Theory
70 5.3 Drying Theory for Rectangular Dryers
76 5.4 Removal of Bound Moisture from a Product in a Rectangular Dryer
88 5.5 Circular Fluid-Bed Dryers
90 6 Continuous Direct-Heat Rotary Drying 99 6.1 General Description
99 6.2 Design Methods
103 7 Flash Drying 117 7.1 General Description
117 7.2 Design Methods
120 7.3 Drying in Seconds
122 7.4 Application of the Design Methods
126 8 Spray Drying 133 8.1 General Description
133 8.2 Single-Fluid Nozzle
138 8.3 Rotary Atomizer
143 8.4 Pneumatic Nozzle
145 8.5 Product Quality
149 8.6 Heat of Crystallization
153 8.7 Product Recovery
154 8.8 Product Transportation
154 8.9 Design Methods
155 9 Miscellaneous Continuous Convective Dryers and Convective Batch Dryers 163 9.1 Conveyor Dryers
164 9.2 Wyssmont Turbo-Dryer
169 9.3 Nara Media Slurry Dryer
170 9.4 Anhydro Spin Flash Dryer
172 9.5 Hazemag Rapid Dryer
174 9.6 Combined Milling and Drying System
176 9.7 Batch Fluid-Bed Dryer
178 9.8 Atmospheric Tray Dryer
182 9.9 Centrifuge-Dryer
184 10 Atmospheric Contact Dryers 189 10.1 Plate Dryers
189 10.2 Mildly Agitated Contact Dryers (Paddle Dryers)
193 10.3 Vigorously Agitated Contact Dryers
198 10.4 Vertical Thin-Film Dryers
202 10.5 Drum Dryers
204 10.6 Steam-Tube Dryers
208 10.7 Spiral Conveyor Dryers
212 10.8 Agitated Atmospheric Batch Dryers
213 11 Vacuum Drying 217 11.1 Vacuum Drying
219 11.2 Freeze-Drying
232 11.3 Vacuum Pumps
242 12 Steam Drying 251 12.1 Sugar Beet Pulp Dryer
252 12.2 GEA Exergy Barr-Rosin Dryer
255 12.3 Advantages of Continuous Steam Drying
257 12.4 Disadvantages of Continuous Steam Drying
257 12.5 Additional Remarks Concerning Continuous Steam Drying
258 12.6 Eirich Evactherm Dryer
258 13 Radiation Drying 263 13.1 Dielectric Drying
264 13.2 Infrared Drying
278 14 Product Quality and Safeguarding Drying 289 14.1 Product Quality
289 14.2 Safeguarding Drying
291 15 Continuous Moisture-Measurement Methods, Dryer Process Control, and Energy Recovery 313 15.1 Continuous Moisture-Measurement Methods for Solids
313 15.2 Continuous Moisture-Measurement Methods for Gases
321 15.3 Dryer Process Control
327 15.4 Energy Recovery
335 16 Gas-Solid Separation Methods 339 16.1 Cyclones
340 16.2 Fabric Filters
343 16.3 Scrubbers
346 16.4 Electrostatic Precipitators
349 17 Dryer Feeding Equipment 357 17.1 Fluid-Bed Dryers
358 17.2 Direct-Heat Rotary Dryers
360 17.3 Flash Dryers
360 17.4 Spray Dryers
361 17.5 Conveyor Dryers
361 17.6 Hazemag Rapid Dryer
363 17.7 Anhydro Spin Flash Dryer
365 17.8 Plate Dryers
365 17.9 Vigorously Agitated Contact Dryers
365 17.10 Vertical Thin-Film and Drum Dryers
365 Notation 369 Index 377