Post on 20-Apr-2022
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Infrared Drum IRD
Infrared Drum IRD
David Bargery Project Manager
david@kreyenborg.co.uk
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Kre
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roup
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reyenborg
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The KREYENBORG Group
Kreyenborg GmbH Screen Changers, Gear Pumps, Polymer Valves
Bruckmann & Kreyenborg Granuliertechnik Underwater Pelletizing
Kreyenborg Plant Technology Infrared Dryer, Silos, Mixers, Fabrication
BSG Controls Extrusion Control Systems
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► Short wave Infrared Radiation – heating from the inside
Process technology
0 1 2 3 4 5 [µm]
Str
ah
lun
gsin
ten
sität
Halogen
Short wave
Fast midwave
Carbon
midwave
T Particle > T Ambient
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IRD Basic Design
Screw feeder Drum with welded helix
Infrared module
Temperature measurement
Cooling air supply for
Infrared Module
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IRD – Technology / Basic design
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IRD – Technology / Basic design
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Aluminiumoxideceramic
Process technology
KREYENBORG Infrared Heater Modules
► Specially developed for operating in dusty conditions
► long integrity lifetime of infrared lamps
► Infrared lamps with integrated reflectors
► low spare part costs
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Process technology
KREYENBORG Infrared Heater Modules
► Extensive tested and simulated technology
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KREYENBORG Infrared Drum
► modular design specific to the application
► over 200 possible combinations of drum design combined with installed
infrared power
► Throughput range from 20 kg/hr up to 5000 kg/hr (40 – 11.000 lbs/hr)
IRD – Product range
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Prozesszeiten IRD
0 5 10 15 20 25
PPS kristalliseiren
PET kristallisieren
EVA Wärmeprozess
HDPE Trocknung
PET
TPU
ABS/PC
PLA
LCP
Trocknungszeit [min]
IRD
IRD – Markets & Applications
KREYENBORG Infrared Drum IRD
► short residence times [min]
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IRD – Drying / Residence times
Prozessszeiten IRD - Konventionell
0 50 100 150 200 250 300 350
PPS kristalliseiren
PET kristallisieren
EVA Wärmeprozess
HDPE Trocknung
PET
TPU
ABS/PC
PLA
LCP
Trocknungszeit [min]
Konventionell
IRD
KREYENBORG Infrared Drum IRD
► short residence times [min]
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Energieverbrauch IRD
0 20 40 60 80 100 120 140 160
PPS kristalliseiren
PET kristallisieren
EVA Wärmeprozess
HDPE Trocknung
PET Trocknung
TPU
ABS/PC
PLA
LCP
Energieverbrauch W/kg/h
KREYENBORG Infrared Drum IRD
► less specific energy [W/kg/h]
IRD – Drying / Energy consumption
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Process technology
Why Crystallize and dry PLA
► Unlike many other major packaging resins (e.g., polyolefins, polystyrene,
and PVC), PLA biopolymer is produced by a condensation reaction. This
reaction, which also produces water, is reversible.
► Therefore, when undried PLA biopolymer is melted the resin and water
chemically react. Hydrolysis occurs and key mechanical properties of the
biopolymer are reduced.
► This hydrolysis reaction also changes the polymer melt viscosity and the
crystallization rate, making it very difficult to process into a quality end
product.
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► Difficult handling due to sticking of Flakes – good mixing
necessary
► Temperature sensitive in the area of 60 °C +/- 10 °C
► Specific material handling and temperature profiles
necessary
Application: Crystallization and Drying of PLA
IRD – Markets & Applications / PLA
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► Energy consumption 100 – 120 W/kg/h
Energieeinsatz PLA @ 13.8 min / 120 °C
Durchsatz 370 kg/h
0,00
20,00
40,00
60,00
80,00
100,00
120,00
140,00
10
:43
:00
10
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10
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11
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:00
Zeitachse [hh:mm:ss]
En
erg
iev
erb
rau
ch
[W
/kg
/h]
Energieeinsatz
IRD – Markets & Applications / PLA
Application: Crystallization and Drying of PLA
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Muenster Trial Facility available for customer trials
IRD – Trial Facility
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Examples of IRD in
‘Real Life’ applications Infrared drying is an industrially proven
process
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► Crystallization and Drying of PET sheet flakes in one process
► Throughput rate up to 900 kg/hr
IRD – Case Studies / Installations
Application: Austria – IRD B-160/270 sheet extrusion
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► 800 kg/h PET Thermoforming sheet Regrind
IRD – Case Studies / Installations
Application: Great Britain – IRD B-180/270-135
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IRD – Case Studies / Installations
Application: Belgium – IRD B-180/270
► 900 kg/h PET Sheet Flakes
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► each 1300 kg/h PE Pellets
IRD – Case Studies / Installations
Application: Czech Republic – 4 x IRD B-180/270-135
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► Crystallisation of thick PET-Regrind
► drying and crystallisation in one step
► 600 kg/h
IRD – Case Studies / Installations
Application: Ireland - IRD B-120/270-90
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► 600 kg/h PET Bottle Flakes1
IRD – Case Studies / Installations
Application: Columbia – IRD B-140/270-90
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► Crystallisation and Drying of PET-Bottle Flakes
► drying and crystallisation in one step
► Upgrade of an existing desiccant dryer from 250 kg/h to 550 kg/h
IRD – Case Studies / Installations
Application: Columbia – IRD B-140/270-90
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► each 800 kg/h PET and PLA Sheet Regrinds
IRD – Case Studies / Installations
Application: USA - 2 x IRD B-180/270-135
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Thank you
David Bargery
david@kreyenborg.co.uk