Recycling system for extrudet products
In pet food and aqua feed plants the extruder is stopped for size and recipe change this means that the start and the end of the production is not used for finished product.
This start up/stop material do have a high water activity and cannot be stored without drying and bringing the water activity down to avoid bacterial growth.
The recycling system is based on :
- Intake conveyer
- A mixer using hot air for drying
- Heat exchanger for heating up the drying air
- Fan for the drying air
- Separate control system
The product is delivered to the system from a delivery chute into a mixing / drying chamber. The drying takes place in the mixing chamber where a disintegration of the startup mass takes place together with hot air drying. The hot air is produced by a heat exchanger. The exhaust air is treated in the local odor reduction system. The finished dried powder Is transferred to the rework silo.
Drying and mixing time, air temperature is controlled by the integrated control box.
Type: Hot air batch dryer
Product: Wet start up material from extruder
Capacity: 770 – 1320 lbs./batch
(Depending on density)
Drying time: 1-2 hours depending water content in the start up material
Overall dimensions: LxWxH 13,1 ft. x 13,1 ft. x 14,8 ft.
Transport volume: 20 ft. Container
Weight: 8800 lbs.
Motors: 4 pcs (Total 23,4kW)
Steam: 660 lbs/hr (73 psi)
Compressed air: 40 gal./min (88 psi.)
Exhaust air: 88000 ft3/hr