Page 16 - Separation process principles 2

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17.9 Desublimation 679
Desublimation in a Heat Exchanger 680
17.10 Evaporation 681
Evaporator Model 683
Multiple-Effect Evaporator Systems 685
Overall Heat-Transfer Coefficients in Evaporators 688
Summary 688 References 689 Exercises 690
Chapter 18 Drying of Solids 695

18.0 Instructional Objectives 695
Industrial Example 696
18.1 Drying Equipment 696
Batch Operation 697
Continuous Operation 699
18.2 Psychrometry 7 1 1
Wet-Bulb Temperature 7 13
Adiabatic-Saturation Temperalure 7 15
Moisture-Evaporation Temperature 7 16
18.3 Equilibrium-Moisture Content of Solids 7 19
18.4 Drying Periods 72 1
Constant-Rate Drying Period 722
Falling-Rate Drying Period 724
18.5 Dryer Models 734
Material and Energy Balances for Direct-Heat Dryers 734
Belt Dryer with Through-Circulation 735
Direct-Heat Rotary Dryer 738
Fluidized-Bed Dryer 739
Summary 742 References 742 Exercises 743

Index 748