Pneumatic Conveying
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Descripción: Fundamentals, Operation Principles and Equipment of Pneumatic Conveying Flow patterns of Pneumatic Conveyi...
Description
Fundamentals, Operation Principles and Equipment of Pneumatic Conveying Fluidization
Fundamentals, Operation Principles and Equipment of Pneumatic Conveying
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Fluid Dynamics
Fundamentals, Operation Principles and Equipment of Pneumatic Conveying Fluidization
Fundamentals, Operation Principles and Equipment of Pneumatic Conveying Contents 1. Introduction 2. Classification of Pneumatic Conveying Systems 3. State Diagram
4. Equipments 5. Summary 6. References
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Fluid Dynamics
Fundamentals, Operation Principles and Equipment of Pneumatic Conveying Fluidization
Introduction Moving objects with air • Vacuum -Pulls System pressure is less than atmospheric •Vacuum Cleaner •Drinking Straw • Pressure -Push System pressure is greater than atmospheric •Leaf Blower •Garden Hose Slide 3/33
Fluid Dynamics
Fundamentals, Operation Principles and Equipment of Pneumatic Conveying Fluidization
What Can Be Conveyed?
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Fluid Dynamics
Fundamentals, Operation Principles and Equipment of Pneumatic Conveying Fluidization
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Fluid Dynamics
Fundamentals, Operation Principles and Equipment of Pneumatic Conveying Fluidization
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Fluid Dynamics
Fundamentals, Operation Principles and Equipment of Pneumatic Conveying Fluidization
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Fluid Dynamics
Fundamentals, Operation Principles and Equipment of Pneumatic Conveying Fluidization
What Constitutes a Pneumatic Conveying System? • • • •
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The Prime Mover Feeding, Mixing and Acceleration Zone The Conveying Zone Gas–Solids Separation Zone
Fluid Dynamics
Fundamentals, Operation Principles and Equipment of Pneumatic Conveying Fluidization
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Fluid Dynamics
Fundamentals, Operation Principles and Equipment of Pneumatic Conveying Fluidization
Modes of Pneumatic Conveying
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Fluid Dynamics
Fundamentals, Operation Principles and Equipment of Pneumatic Conveying Fluidization
Flow patterns in a horizontal conveying pipe
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Fluid Dynamics
Fundamentals, Operation Principles and Equipment of Pneumatic Conveying Fluidization
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Fluid Dynamics
Fundamentals, Operation Principles and Equipment of Pneumatic Conveying Fluidization
Basic Pneumatic Conveying Systems • Positive Pressure System • Negative Pressure Systems • Combined Negative–Positive Pressure Systems • Closed Loop System
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Fluid Dynamics
Fundamentals, Operation Principles and Equipment of Pneumatic Conveying Fluidization
Positive pressure system
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Fluid Dynamics
Fundamentals, Operation Principles and Equipment of Pneumatic Conveying Fluidization
Negative pressure systems
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Fluid Dynamics
Fundamentals, Operation Principles and Equipment of Pneumatic Conveying Fluidization
Conveying negative–positive pressure systems
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Fluid Dynamics
Fundamentals, Operation Principles and Equipment of Pneumatic Conveying Fluidization
Closed loop system
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Fluid Dynamics
Fundamentals, Operation Principles and Equipment of Pneumatic Conveying Fluidization
Classification by Solid Feeder Type • Controlled feed systems • Non-controlled feed system
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Fluid Dynamics
Fundamentals, Operation Principles and Equipment of Pneumatic Conveying Fluidization
Operation of a Pneumatic Conveying System • State diagram for horizontal conveying
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Fluid Dynamics
Fundamentals, Operation Principles and Equipment of Pneumatic Conveying Fluidization
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Fluid Dynamics
Fundamentals, Operation Principles and Equipment of Pneumatic Conveying Fluidization
Typical system layout
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Fluid Dynamics
Fundamentals, Operation Principles and Equipment of Pneumatic Conveying Fluidization
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http://www.process-systems.com.au/Pss18.html
Fluid Dynamics
Fundamentals, Operation Principles and Equipment of Pneumatic Conveying Fluidization
Food Conveying System
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Fluid Dynamics
Fundamentals, Operation Principles and Equipment of Pneumatic Conveying Fluidization
Loading Unloading by Pneumatic Conveying
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Fluid Dynamics
Fundamentals, Operation Principles and Equipment of Pneumatic Conveying Fluidization
Companies in Pneumatic Conveying •Govoni Sim Bianca Impianti (Italy) •Coperion Waeschle (Germany) •Zeppelin ZSA (Germany) •Dynamic Air (USA) •Telschig •Mecawber Engineering Systems India
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Fluid Dynamics
Fundamentals, Operation Principles and Equipment of Pneumatic Conveying Fluidization
Advantages
Disadvantages
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Dust-free transportationFlow types
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High power consumption
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Flexibility in routingFlow Problems
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Wear and abrasion of equipment
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Distribution to many different areas
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Incorrect design can result in
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Low maintenance and low manpower costs
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Multiple use
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Security
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Ease of automation and control
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particle degradation •
Limited distance
Fluid Dynamics
Fundamentals, Operation Principles and Equipment of Pneumatic Conveying Fluidization
Summary • Dilute phase systems constitute the most widely used of all pneumatic conveying systems • For effective dilute phase operation velocity should be slightly greater than saltation velocity. • To increase solid feed rate, it is necessary to increase the conveying velocity.
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Fluid Dynamics
Fundamentals, Operation Principles and Equipment of Pneumatic Conveying Fluidization
References •
G.E. Klinzing , F. Rizk , R. Marcus , L.S. Leung, ‘Pneumatic Conveying of Solids’, Third Edition, (2009), Springer, Dordrecht Heidelberg New York • http://www.processsystems.com.au/Pss18.html • http://www.zeppelin-industry.de
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Fluid Dynamics
Fundamentals, Operation Principles and Equipment of Pneumatic Conveying Fluidization
..Many thanks for your attention..
Questions?
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Fluid Dynamics
Fundamentals, Operation Principles and Equipment of Pneumatic Conveying Fluidization
..Additional figures for the discussion.. Flow phases for fine particle suspensions: (a) fully suspended, stable; (b) surging, unstable; (c) saltation point– stationary bed, stable; (d) moving bed, very unstable; (e) stationary bed, stable
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Fluid Dynamics
Fundamentals, Operation Principles and Equipment of Pneumatic Conveying Fluidization
Minimum safe air velocity in vertical horizontal lines for materials with different bulk densities and sizes Slide 31/33
Fluid Dynamics
Fundamentals, Operation Principles and Equipment of Pneumatic Conveying Fluidization
Comparison of velocities in pressure and vacuum systems for materials with different bulk densities
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Fluid Dynamics
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