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Dryer is a necessary part for pellet or briquette manufacturing investors who have raw materials with high moisture content (>18%). Usually small scale pellet production or biomass briquette production needs airflow dryer, while large scale pellet production needs rotary drum dryer.

Airflow dryer

It can decrease the moisture content of raw material from 20-25% to 8-12% with a hot air boiler. If the moisture content is much higher than 25%, it may be dried for 2 or 3 times.
airflow dryer
Model HWA-DL-4 HWA- DL -7.5 HWA-QL-11 HWA-QL-15
Capacity(Kg/hour) 200-250KG 400-500KG 500-700KG 800-1000KG
Size of Input Material
< 3mm & < 5mm < 3mm & < 5mm < 3mm & < 5mm < 3mm & < 5mm
Temperature of Hot Air 150°C~220°C 185°C~220°C 150°C~220°C 150°C~220°C
Consumption of Wood Waste for heating the dryer 50-65 kg/h 60-75kg/h 65-90kg/h 100-120kg/h
(Centrifugal Fan)
4kw 7.5kw 11kw 15kw
Net/Gross Weight 1760kg 2100kg 2400kg 2600kg
Dimension(m) 9×2×3.3m 13×2×3.3m 16×2×3.3m 17×2×3.3m

Rotary drum dryer

A three cylinder drum dryer is build by 3 concentric cylinder, combining together according to some mathematical structure. By applying the heat-work principle, the lifting flights mounted on the inner wall and the feed guiding plates have been sophisticatedly designed. The wet material is moving in a spiral way by gravity, keeping staying for a longer time inside the dryer, enhancing the heat exchange with hot air by fully spreading. In the special designed three cylinder structure, the inner and middle cylinders are wrapped by the outer, forming a heat insulation system. The heat emitted by the inner and middle cylinders is again functioning in the heat exchange for material in the outer cylinder. The three cylinder rotary dryer therefore realizes in decreasing the heat loss and increasing the heat exchange efficiency.
rotary drum dryer
Model WHR-Φ0.8×10m WHR-φ1.2×10m HWR-φ1.5×11m WHR-φ1.8×11m HWR-φ1.8×14m HWR-Φ2.0×15m
Air fan power 15kw 22kw 30kw 45kw 45kw 45kw
Inner diameter 800mm 1200mm 1500mm 1800mm 1800mm 2000mm
Length 10m 10m 11m 11m 14m 15m
Temperature of inlet air 180-350℃ 180-350℃ 180-350℃ 180-350℃ 180-350℃ 180-350℃
Temperature of outlet air 90-100℃ 90-100℃ 90-100℃ 90-100℃ 90-100℃ 90-100℃


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