Complete Wood Pellet Mills

FLOWCHART:

Pelletizing is the process of making the waste materials into solid fuel. The products are used for burning purposes. The wood pellet is one of the most commonly used pelletizing materials. The wood pellet can be made from any type of agro-forestry waste: Groundnut-shell Sugarcane Biogases Caster Shells/Stalk Saw dust Coffee Husk Paddy Straw Sunflower Stalk Cotton Stalks Tobacco waste Mustard Stalk Jute waste Bamboo Dust Tea waste Wheat Straw Palm husk Soybeans husk Coir Pitch Barks/Straws Rice Husks Forestry wastes Wood Chips and many other Agro wastes.

But the moisture content should be less than 12%,the grain size is below 5*5mm.

Detailed Product Description:

1. Raw material:
Pellet fuel is mainly made of sawdust,shavings and fines leftover after processing trees for lumber and otherproducts. The raw material also can be corn or other biomass material.

2. Introduction of Process:
At a pellet mill, thematerial is dried, compressed and formed into small eraser-sized bits. They areclean, pleasant to smell and smooth to touch.

Directly before pellet press, a product with a granular size of approx 4mm and a residual moisture content of approx 15 % is required.

The technology can use PLC automatic control system. In the process ofcrushing and pelletizing, speed control system can be used for feeding material,which adjust the quantity of flow speed of material according to load of mainmotor. The moisture test points are designed for testing moisture of rawmaterial and material after drying. The material with high or low moisture areseparated and feed in back after processing.

3. Tech. Data
Capacity: 1 t/h ~ 6 t/h (based on a mixtureof 50% pine and 50% spruce wood)
Raw Materials: Wood sawdust, logs from softwood
Product Diameter: 6mm or 8mm (optional)
Product Density: 1.1~1.3kg/m3
Final Moisture: <8%

Note: The above data concerning capacity, consumption may vary depending onthe origin, nature of the raw material.

Current Data
Service Voltage: 380V, 50Hz
Control Voltage In SwitchCabinet: 220V, AC
Signal Voltage For Valves, Initiators 24V,DC
Painting Optional by users

4. Highlight of our equipments
> Reliable continuousoperation
> Low energy consumption
> Low maintenance cost

5. Flowchart for wood pelletizing plant

RawMaterialChipperingCrushingDryingMixingConveyingPelletizingCooling

1 Crushing Process:
When the thickness of raw wood material is >10mm,and >50 * 50mm(L * W), we need use the Wood Chipper to chip them into smallpieces, then crush the small pieces into wood powder with diameter less 3mm byHammer Mill (Crusher).

2 Drying Process:
The best moisture content to pelletizing is about13-15%. Our Rotary Dryer is made up of Stove and Main Rotary Dryer, which canrealize to reduce the moisture from 60% to 10%. Our stove is fueled by coal,which can save electricity consumption largely.

3 Pelletizing Process:
Wood Pellet Mill isthe most important equipment, which have the following features:

(1).Crushing Process:

When the thickness of raw wood material is >10mm, and >50 * 50mm(L * W), we need use the wood chipper to chip them into small pieces, then crush the small pieces into wood powder which is less than 3mm in diameter by Hammer Mill (Crusher).

(2). Drying Process:

The best moisture content to pelletizing is about 13-15%. The GEMCO Rotary Dryer is made up of Stove and Main Rotary Dryer, which can reduce the moisture from 60% to 10%.

Thestove is fueled by coal, which can largely save electricity consumption.The rotary dryer is specially designed for energy saving purpose, the surface of the dryer is covered with special cotton material sheet to prevent the heat from leaking.

(3). Pelletizing Process:

MZLH Wood Pellet Mill is the most important equipment, which has the following features:

1. The lubrication system for the wood pellet milling adopts the tracing and inspecting system controlled by the microcomputer. When the temperature of the bearing is above the normal temperature, the microcomputer will start the auto-lubrication system to lubricate the bearings.It completely solved the trouble of lubricating roller depending on the operation experience. The Lubrication System is made up of the tracing and inspecting system controlled by the microcomputer,the auto-timing lubricate device and the manual compelled lubricating device .
2. Driving Gear adopts the high precision gear transmission structure. The wear bearing is SKF from Sweden. The ring die adopts the hoop fastening method.Comparing wi