IRD Crystallizing & Drying Handling System

Infrared drying system for plastic material or other in fast drying process.

  • Application: 30% virgin + 30% regrind APET from in-house + 40% regrind APET from post consumed
  • Buck density: virgin 0.75 g/cm3 + regrind 0.4 g/cm3
  • Initial material moisture: virgin 0.4%; regrind 0.6%
  • Handling capacity: 200~2,200 kgs/hr
  • Process time: 12 min. (approximate)
Model:
IRD150-270 IRD180-270 IRD180-360 IRD180-450

Features

Sunwell Infrared Rotary Drum (IRD) Crystallizing/Drying System is ideal for processors of PET sheet, film extrusion and injection molding using post-industrial or post-consumer regrind as well as for processors of polyester fiber. The infra-red rays cause 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 which removes the humidity .

A stainless steel rotary drum with an internal helix transports the materials with a tumbling action to expose all particle surfaces to infrared rays. The output needed is dependent on the drum diameter and length as well as the radiation power. Exposure time and temperature are controlled by the speed and the IR power applied during the process. It provides continuous processing of PET flake, reducing moisture from over 4,000 ppm to less than 50 ppm in minutes, compared to 5-6 hours for conventional systems. The short exposure to heat in the IRD preserves Intrinsic Viscosity properties. It has significant benefit for PET material crystallizing and drying.

Crystallizing Drying System

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.

Infrared Rotary Drum (IRD) Process

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

Specifications

MODEL IRD150-270 IRD180-270 IRD180-360 IRD180-450
Drum size
(Dia. x L mm)
1500 x 2700 1800 x 2700 1800 x 3600 1800 x 4500
Feeder size
(Dia. x L mm)
139 x 650 139 x 650 139 x 650 139 x 650
Output capacity
(kgs/h)
~500 ~800 ~1200 ~1500
Temp. control zones 3 3 4 5
Heater banks 3 3 4 5
Infrared lamps power (kW) 135 135 180 225
Feeding power
(kW)
0.75 0.75 0.75 0.75
Drum turning power
(kw)
0.75 x 2 0.75 x 2 0.75 x 2 0.75 x 2
Cooling Blower
(kw)
2.2 3.7 3.7 5.5
Extraction fan
(kW)
2.2 3.7 3.7 5.5