Rotary drum dryer is mainly used to dry the biomass material powders up to 40% moisture content to 15%, which is required to make pellets. A complete drum drying system is composed of two main parts: one is furnace also named heat stove, which is providing heat source for drying the sawdust material; the other is drum dryer, the raw material is fed into the dryer by a screw or belt conveyor, which is rotary in the dryer and dried to 15% moisture content by the hot air from the furnace.
Three Layers Revolving Cylinder Dryer
Detail Parts of Three Layers Revolving Cylinder Dryer
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Wet Material Inlet |
Three Layers Dryer |
Technical Parameters of Three Layers Revolving Cylinder Dryer
|
Model |
Diameter(mm) |
Length(m) |
Power(kw) |
Speed of rotation (r/min) |
|
HZG6 |
600 |
4,5,6,7,8 |
3-5.5 |
3-20 adjustment |
|
HZG8 |
800 |
4,5,6,7,8,9,10 |
5.5-7.5 |
|
HZG10 |
1000 |
6,7,8,9,10,11,12 |
5.5-7.5 |
|
HZG12 |
1200 |
6,8,10,12,14,16 |
7.5-11 |
|
HZG15 |
1500 |
8,10,12,14,16,18 |
11-15 |
|
HZG18 |
1800 |
8,10,12,14,16,18,20 |
15-18.5 |
|
HZG22 |
2200 |
10,12,14,16,18,20,22,25 |
18.5-22 |
|
HZG24 |
2400 |
12,14,16,18,20,22,25 |
22-30 |
Single-Layer Revolving Cylinder Dryer
Detail Parts of Single-Layer Revolving Cylinder Dryer
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Single Layer |
Hot Air Inlet |
While the raw material must be relatively well ground and consistent in regular size. The raw material is suspended in moist air instantly by hot air from the hot air stove which uses a portion of the sawdust or biomass as fuel, of course it can be burned by coal, natural gas. The rotary drum dryer makes a great compliment for use accompanied with hammer and pellet mill.
Working Principle of Dryer
The dryer is a cylinder with a little slantwise and the rotate speed can be adjusted according to different request. Inside the drum dryer, we can design different layers in order to meet different capacity requirements. The moist raw material is fed into cylinder well-distributed and dispersed after be turn over by shoveling plate. Then the sawdust contacts with the hot air fully, the drying is acierated. Shoveling plate can be selected in order to meet various materials.
