Pneumatic Conveying Solutions for your application

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Conveying Technologies
Conveying Technologies
Conveying Technologies
Conveying Technologies

Comparison of conveying modes

Dilute Phase Conveying

High gas velocities: v = 25-40 m/s
v = 5.000-8.000ft/min
Low product to air ratio: range 1-5 to 1
Low to medium pressure drop: p = 0.1-1.0 bar
p = 1.5 - 15 psig
Special pipe support requirements: No

Dilute phase characteristics:

  • High dust volume
  • Mostly coarse dust long and short streamers, depending on the product
  • Dust surges at the end of the unloading process
  • Low investment costs
  • Difficult dust removal because of high dust volume and streamers
  • High product losses in form of dust

Typical conveying layouts for polyolefine plants

Dilute Phase Conveying – Traditional layout with elutriators for dust separation

1 Compressed Air Supply 2 Blender 3 Elutriator (dedusting) 4 Storage Silos
1 Compressed Air Supply 2 Blender 3 Elutriator (dedusting) 4 Storage Silos

These systems can be upgraded easily with mobile or stationary DeDusters® located under the silos.

Traditional solution with elutriator Modern solution with stationary or mobile DeDuster®
Left: Traditional solution with elutriator - Right: Modern solution with stationary or mobile DeDuster®

Dense Phase Conveying

Low gas velocities: v = 2-10 m/s
v = 400-2.000ft/min
High product to air ratio: range 15-50 to 1
High pressure drop: p = 0.5-3.5 bar
p = 7 - 30 psig
Special pipe support requirements: Yes


Dense phase characteristics:

  • Low dust volume
  • Very fine dust, but high electrostatic charged dust, sticks to the pellet surface
  • No streamers through conveying
  • Streamer formation caused by purging
  • High investment costs
  • Very difficult to remove the electrostatically charged micro dust
  • Low product losses in form of dust

Typical conveying layouts for polyolefine plants

Dense Phase system without dust separation

1 Compressed Air Supply 2 Blender 3 Silo
1 Compressed Air Supply 2 Blender 3 Silo

These systems can be upgraded easily with mobile or stationary DeDusters® located under the silos.

Modern dense phase system with stationary or mobile DeDuster®
Modern dense phase system with stationary or mobile DeDuster®

STRANDPHASE® Conveying

Optimized gas velocities: v = 15-25 m/s
v = 3.000-5.000ft/min
Medium product to air ratio: range 5-18 to 1
Medium to high pressure drop: p = 0.5-2.0 bar
p = 7 - 50 psig
Special pipe support requirements: No

STRANDPHASE® characteristics:

  • Low to Moderate dust volume
  • Mostly coarse dust and some short streamers, depending on the product
  • Low to moderate investment costs
  • Easy dust removal with DeDuster®
  • Low to moderate product losses in form of dust

 


Typical conveying layouts for polyolefine plants

Strandphase Conveying with Pellbows and dedusting under the silos

1 Compressed Air Supply  2 Blender  3 Silo  4 DeDuster® (mobile or  stationary)  5 Pellbow®
1 Compressed Air Supply 2 Blender 3 Silo 4 DeDuster® (mobile or stationary) 5 Pellbow®

For new installations, Pelletron recommends the pellcon3® system, utilizing STRANDPHASE® conveying, Pellbows® and DeDusters®.

pellcon3

Discover pellcon3®:
the gentle conveying process

See how the combination of STRANDPHASE®, the Pellbow® and our DeDuster® can save you money.

The New Thinking In Pneumatic Conveying: pellcon3®

An overview of pneumatic conveying technologies and a review of how Pelletron products and services can improve your process.

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