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IRD Crystallizing & Drying Handling System

Principle & Functions


The infra-red rays causes molecular heat oscillation acting directly to the core of the particles from the inside-out so the moisture inside the particles are quickly heated and vaporized into the circulating ambient air to remove the humidity at the same time.
It provides continuous processing of PET flake, reducing moisture from over 4,000 ppm to less than 50 ppm in tens of minutes, compared to 5-6 hours for conventional systems.
It is significant benefit for PET material crystallizing and drying as well as the short exposure to heat in the IRD to preserve IV properties.

 

IR Drying


Heat is absorbed inside the particle because the plastic and moisture are excellent IR absorbent so that the drying takes a short time.

Heating; Crystallizing and Drying are in the interior particle.

Advantages In Comparison To Conventional Systems


  • Up to 60% less energy than conventional drying systems
  • Time and space savings
  • Faster start-up and quicker shut down
  • Fully continuous process
  • Careful material treatment
  • No segregation of products with different bulk densities
  • High efficiency
  • Simple handling and installation

Infrared Rotary Drum (IRD) Process


The Drum has an internal helix that pushes the material forward when rotating; at the same time the material passes under the IR radiators for drying.
The output needed will size the drum diameter and length together with the radiation power. Exposure time and temperature are controlled by the speed and the IR power applied during the process.

IRD Specification


  • Application: 50% virgin + 50% regrind APET
  • Bulk density: 0.75 g/cm3 + 0.4 g/cm3
  • Initial material moisture: virgin 4,000ppm; regrind 6,000ppm*

MODEL IRD050-120 IRD072-240 IRD072-300 IRD120-300 IRD120-360
Drum size
(Dia. x L mm)
500 x 1200 720 x 2400 720 x 3000 1200 x 3000 1200 x 3600
Feeder size
(Dia. x L mm)
50 x 400 90 x 600 90 x 600 100 x 650 100 x 650
Output capacity
(kgs/hr)
50 120 150 250 350
Infrared lights power (kW) 36 54 63 84 144
Feeding power
(kW)
0.38 0.38 0.38 0.38 0.38
Drum turning power (kW) 0.38 0.75 0.75 1.5 1.5
Cooling Blower
(kW)
0.2 0.2 0.2 0.4 0.4

*1 % = 10,000ppm

 

MODEL IRD150-300 IRD150-360 IRD150-450 IRD180-360 RD180-450
Drum size
(Dia. x L mm)
1500 x 3000 1500 x 3600 1500 x 4500 1800 x 3600 1800 x 4500
Feeder size
(Dia. x L mm)
139 x 650 139x650 139 x 650 139 x 650 139 x 650
Output capacity
(kgs/hr)
500 700 1000 1200 1600
Infrared lights power (kW) 126 144 222 222 240
Feeding power
(kW)
0.75 0.75 0.75 0.75 0.75
Drum turning power (kW) 2.2 2.2 2.2 2.2 2.2
Cooling Blower
(kW)
0.75 0.75 0.75 0.75 0.75

*1 % = 10,000ppm

 


 

 

 

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