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Pick Up Point Dense Phase Vacuum

Pneumatic Conveying

When it comes to pneumatic conveying from your rail cars, silos or super sack unloading equipment, there are many considerations that determine how you should handle materials. For instance, the choice to use vacuum or pressure conveying can be as critical as it is entirely situational. Depending on the materials you and your operation are looking to convey, choosing between dilute phase and dense phase conveying will also better fit different processes. Ultimately an engineer will have to consider what is possible with the resources available and which methods will best suit the material being conveyed.

Safety, efficiency and cost represent just some of the factors to keep in mind when deciding between vacuum or pressure conveying. Whether or not material should be conveyed gently, ingredients should be protected against segregation (de-mixing) or if the effects of abrasion on your equipment should be minimized will determine whether dilute or dense phase conveying is appropriate in the end. Particle size of your material, its bulk density and other key characteristics also play critical roles when opting for either dilute or dense phase.

Vacuum Conveying

  • In most cases: cleaner, safer, efficient and flexible than pressure conveying
  • Systems lend themselves to a more dust-free operation than pressure conveying
  • Product will not escape the system itself in the event of a leak (the pressure on the outside is greater than what is inside)
  • Absolutely essential when the leakage of toxic material is a concern
  • Eliminates the product exposure to heat of compression from the blower outlets (does not require a heat exchanger to avoid risk of degradation toward temperature-sensitive ingredients)
  • Helps assure that gaskets and fittings form a tight seal (making it easier to maintain)
  • Most economical option when conveying from multiple pickup points to a scale
  • Simplest design at the product pick up point
Vacuum Conveying

Pressure Conveying

  • More efficient and economical than vacuum for long distances
  • Extreme resistance to product contamination (Can certifiably avoid any risk related to unfiltered air or foreign materials entering a convey line through a leak)
  • Able to convey at very high throughputs
  • Most economical option when conveying from one pick up point to multiple destinations (example: from a single big bag unloading station to multiple silos)
Pressure Conveying

Dilute Phase Conveying

  • Highly flexible
  • Simple system to design and operate
  • Versatile and able to handle wide range of materials and flow-characteristics
  • Easier to disassemble for cleaning
  • Easier to install, expand or modify
Dilute Phase Conveying

Dense Phase Conveying

  •  Protects against degradation of delicate materials by conveying with lower velocity
  •  Protects against segregation of blended material 
  •  Minimal wear erosion of system piping and components
Dense Phase Conveying
Vacuum Conveying

Vacuum Conveying

Pressure Conveying

Pressure Conveying

Dilute Phase Conveying

Dilute Phase Conveying

Dense Phase Conveying

Dense Phase Conveying

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