Chapter 9: Separators

9.1 Introduction 3
9.1.1 Related important references 3
9.2 Design Codes 3
9.3 Design Practices 3
9.3.1 Vessel Sizing Criteria 3
9.3.2 Maximum Allowable Vapour Velocity for Vapour-Liquid Separation 6
9.3.3 Mist Eliminators 10
9.3.3.1 Vane-Type Mist Extractors 20
9.3.3.2 Cyclones 23
9.3.3.3 Coalescers and Fiber Beds 26
9.3.3.4 Mesh Blanket locations 29
9.3.4 Liquid Holdup and Surge Times in Separators 29
9.3.4.1 Surge Drums 30
9.3.5 Comparison between Vertical and Horizontal Vapor-Liquid Separators 32
9.3.6 Liquid-Liquid Separation 33
9.3.7 Vessel Configurations and Sizing Methodology 34
9.3.7.1 Vertical Separator Vessels 34
9.3.7.2 Horizontal Separators 41
9.3.7.3 Water – Hydrocarbon Emulsions 47
9.4 Process Datasheet Preparation 48
9.4.1 Choosing Vessel Orientation 48
9.4.2 Optimizing Vessel Size 48
9.4.3 Nozzle Location and Sizing 49
9.4.4 Design Pressure, Temperature and Minimum Design Temperature (MDT) 50
9.4.5 Vessel Support 51
9.4.6 Additional Clarifying Information 51
9.5 Process Calculations 52
9.6 Functions of Circular Segments 85
9.7 References 91

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