1. The working principle of dried wood log biomass pellet processing equipment

The core principle of dry wood biomass pellet processing equipment is to use mechanical extrusion to densify dry wood chips. Frictional heat generated by extrusion activates the natural adhesive properties of lignin, achieving glue-free molding. The entire process relies on low moisture content in the raw material to ensure molding efficiency and pellet strength, appropriate particle size to ensure uniform force distribution, and precise coordination between the ring die and rollers to provide sufficient extrusion pressure and temperature. Ultimately, the loose wood waste is transformed into efficient and clean biomass pellet fuel.

2. Characteristics of dried wood log biomass pellet processing equipment

(1)Strong adaptability to raw materials and targeted optimization of dry material processing

One of the core features of dry wood pellet equipment is the efficient processing of low-moisture raw materials,It is significantly different from equipment that processes high-moisture raw materials (which requires a matching dryer):

No need for a deep drying module: Since the raw materials themselves are already dry (moisture content ≤15%), the equipment can save the high-energy consumption of drum dryers or air dryers, and only retain a simple humidity control device (such as a spray water replenishment system) to replenish a small amount of water when some materials are too dry (<10%), thereby reducing overall energy consumption.

High crushing and screening accuracy: Equipped with a dedicated hammer or knife crusher, dry hard wood (such as branches, waste wood boards) can be crushed into uniform wood chips ≤5mm, avoiding excessive powder generation due to the brittleness of dry materials; the screening process uses a multi-layer screen to strictly control the particle size of the raw materials, ensuring that the dry materials are evenly stressed during molding and reducing broken particles. 

(2)Special design of core equipment (pellet mill)The pellet mill is the core of the dry wood pellet mill.

Its structure and parameters are optimized for the characteristics of dry materials to ensure efficient molding under low moisture conditions:

Wear resistance of ring die and roller: Dry wood fibers are relatively hard and lack water lubrication. The ring die (inner wall die hole) and roller surface are made of high-hardness alloy material (such as 40CrNiMo) and are carburized and quenched. The wear resistance is improved by more than 30% compared with ordinary pellet mills, reducing the wear of dry materials on the equipment.

Extrusion parameters are adapted to dry materials: The gap between the roller and the ring die is smaller (usually 0.1-0.3mm), and the extrusion force is greater (up to 80-120MPa), ensuring that dry wood chips are fully compressed under low moisture conditions; at the same time, the ring die speed is slightly lower (300-500r/min), which prolongs the residence time of the material in the die hole, allowing the lignin to be fully softened under frictional heat (100-130℃), compensating for the problem of insufficient adhesion of the dry material.

Feeding uniformity control: A variable frequency screw feeder is used to monitor the flow of dry materials in the silo in real time through sensors to avoid uneven feeding caused by poor fluidity of dry materials (easy to be suspended or bridged), thus ensuring a stable molding process.

3. Application scenarios of dried wood log biomass pellet processing equipment

The core application scenario for wood pellet processing equipment is converting wood waste into environmentally friendly fuel.

(1)Raw material sources: Sawdust and scraps from lumber processing plants, branches and trunks pruned from forestry farms, wood chips and shavings from furniture factories, and waste wood from building demolition.

(2)Residential Heating: Produces clean pellet fuel for fireplaces and home heating stoves, replacing coal and natural gas and reducing pollutant emissions.

(3)Industrial Heating: Provides boiler fuel for food processing plants, building materials factories (such as tile drying), textile mills, and other facilities, meeting steam and hot water needs for industrial production.

(4)Power Generation: Used as fuel in biomass power plants, generating electricity that is fed into the grid through combustion, or provides electricity and heat to distributed energy stations (such as villages, towns, and industrial parks).

TONY Brand 20-25Ton/Hour Dried Wood Log Pellet Manufacturing Plant can take dried wood, various types of wood - related biomass materials, such as branches, small - diameter logs, and wood shavings, with dried wood as the main raw material. After pretreatment and processing, it is solidified into high - density wood pellet fuel. This fuel is an ideal substitute for coal and oil and plays a role in energy conservation and emission reduction. At present, it has been widely used in regions rich in wood resources.

1. Capacity: 20-25Ton/Hour

2. Raw materials: Dried wood logs , branches, small - diameter logs, twigs, etc.

3. Moisture: Dried type, about 10-15%.

4. Application: All kinds of wood - based biomass materials suitable for pellet production.

Suitable customers: Green energy companies, forestry enterprises, and private wood - processing workshops that have advantages in wood raw materials.

5. Finished Pellets Markets: Large power plants ,domestic heating, industrial heating, combustion heat, heating systems, boiler rooms, school canteens, foundry heat sources.

1. Project Name: Dried Wood Log Pellet Production Line

2. Raw Material: All kinds of Dried wood log

3. Moisture Content of Raw Material: 10-15%

4. Capacity: 20-25 tons per hour

5. Process: Crushing Process - Fine Crushing Process -Sawdust Storage Process- Pelletizing Process - Cooling Process - Packing Process

6. Main Equipment: Comprehensive Chipper TPC1300-600-160KW, Effective Hammer Mill-TFD75*160-160KW, TONY Large Hydraulic Storage Silo,TONY Pellet Machine TYJ860-Ⅲ-280KW, Pellet Cooler, Ton Packing Machine and Belt Conveyors

Next, TONY Will Introduce To You All The Necessary Machinery That Will Be Used For The Whole Pellet Production Line. Some Machines Can Be Custom - Made By Customers According To Different Customers' Detailed Demands. Contact TONY For More Details, Including Quotation And Layout.
Comprehensive Chipper	Effective Hammer Mill	Large Hydraulic Storage Silo
1.To Grind Wood Logs φ ≤30cm Into25-55mm Wood Chips.   2.Model: TPC1300-600-160KW With 6 Blades*2sets    3.Capacity:24-30Ton/Hour.	1.To Crush 25-55mm Wood Chips Into 8-14mm Sawdust. 2.Model: TFD75*160-160KW*4sets 3.Capacity: 5-6.5Ton/Hour/Set	1.To Storage Sawdust Before Pellet machine Model: TCY-35*2sets 2.TONY Uses Galvanized Material
Vertical Ring Die Sawdust Pellet Machine	Galvanized Pellets Cooler	Ton Packing Machine
1.To Press Dry Sawdust Into 6-8mm Biomass Pellets 2.Model: TYJ860-III-280KW*5sets 3.Capacity:4-5Ton/Hour/Set 4.New 304SS Type	1.To Cool Pellets From 80-90℃ Into 20-30℃ 2.Model: TCN-10*1set 3.Capacity:20-25Ton/Hour	1.To Pack Pellets Into 1Ton/Bags. 2.Model: TBD*1 set 3.Capacity: 20-25Ton/Hour

1.Wood Chipping Process:

A.This process is mainly used to grind the wood logs whose diamater is under 30cm into wood chips with size 25-55mm. The finish wood chips size can be adjustable by changing different sizes of screeners and adding flying knives inside the wood chipper.

B.TONY brand TPC1300-600-160KW model with 6 flying blades type*2sets

C.Capacity:24-30Ton/Hour. 

Main Parts:

(1)TONY's  Comprehensive  Chipper.

(2)Feed And Discharge Belt Frequency Control To Prevent Card Material

(3)Hydraulic System Control Can Be Used For Thicker Materials

(4)Electronic Control System Allows The Equipment To Be Used Normally      

Contact Tony For More Details With Quotation

2.Wood Chips Fine Crushing Process:

A.This process is mainly used to crush 25-55mm wood chips into 8-14mm sawdust.

B.Capacity:20-25Ton/Hour. 

C.TONY brand effective hammer mill TFD75*160-160KW*4sets

Main Parts: 

(1)TONY Effective Hammer Mill.

(2)Galvanized Dust Collector.

(3)Sawdust Transportation Fan Blower.

(4)Cyclone With Airlock.

(5)Electrical Cabinets.

3.Sawdust Storage Process:

A. This process is mainly used to storage the sawdust that comes out of the hammer mill.It is hydraulic galvanized storage bin which is more stalbe and sawdust in it is not easy to be blocked. 

B. TONY brand sawdust storage to storage the sawdust that comes out of  the hammer mill.This process can be optional by customer.If customer do not chose the storage bin,he can storage the sawdust on the ground directly which may need some labour.

Main Parts: 

(1)TONY's New Sawdust Storage Bin.

(2)With Screws Inside The Storage Bin To Prevent Sawdust Blocked.

4.Pelletizing Process:

A.This process is mainly used to to product pellets into φ6-8mm.

B.Capacity:20-25Ton/Hour. 

C.TONY brand vertical ring die pellet machine TYJ860-III-280KW*5 sets

D.Double screw cycling silo is added above the pellet machine, which has the advantages of saving space, saving labor, intelligently controlling the feeding speed, not easy to block the material, and improving production efficiency.

Main Parts:

(1)TONY's New Vertical Ring Die Pellet Machine.

(2)Cyclone And Bags Dust Collectors. 

(3)Automatic Lubrication System.

(4)Electrical Cabinets. 

You can chose TONY new type SS304 pellet machine

5.Cooling Process:

A.This process is mainly used to cool pellets from 80-90℃ to 20-30℃                                                                      

B.1 set of TONY galvanized cooler separator with capacity 20-25Ton/Hour                                                      

Main Parts:                                                                                                                                   

(1)TONY's Galvanized Cooler Separator With Vibrating Screen.

(2)Cyclone And Bags Dust Collectors.  

(3)Fan Blower.

(4)Connect Pipes.

6.Packing Process:

A.This process is mainly used to pack pellets into 1ton/bags. 

B.1 set of TONY ton packing machine

Main Parts: 

(1)TONY Ton Packing Machine

(2)Electronic Platform Scale Metering System

(3)Automatic Tare, Zero, and Drop Correction Functions

(4)Feeding System Features Fast, Medium, and Slow Feeding Speeds to Ensure Measuring Accuracy

The use of dry wood to process biomass pellets is a project that has both environmental benefits and economic potential. In recent years, it has gradually emerged in rural areas and areas rich in agricultural resources. The project converts waste wood, branches, sawdust and other raw materials into high-density, high-calorific value pellet fuel to meet various energy needs such as heating, power generation and industrial boilers.

1. Raw material sources and cost advantages

The project uses a wide range of raw materials, mainly including: waste wood, branches, bark, etc. These raw materials are agricultural and forestry waste in many areas, with low collection costs, and can even be obtained free of charge in some areas.

2. Market prospects and sales channels

As a clean and environmentally friendly fuel, biomass pellets have the following market advantages:

(1) Environmental protection:It does not contain sulfur and phosphorus, and combustion does not produce sulfur dioxide and phosphorus pentoxide, does not cause acid rain, and reduces air pollution.

(2) High efficiency:It has high energy density and long combustion duration, and can be directly used for coal-fired boiler transformation without the need for large-scale equipment replacement.

3.Diverse sales channels:

(1) Wholesale to industrial users such as biomass power plants, heating companies, and food processing plants

(2) Retail to household users for use in fireplaces, floor heating boilers, etc.

(3) Export to overseas markets with strong demand for biomass fuels

The dry wood processing biomass pellet project is a waste-to-treasure, green and environmentally friendly, and profitable entrepreneurial option, especially suitable for areas with abundant wood resources and low labor costs.

1.Environmental friendliness:

Dry wood pellets are typically made from wood waste and sawdust. This utilization method reduces wood waste and aligns with modern green production concepts. Furthermore, using dry wood pellets as fuel reduces dependence on fossil fuels, thereby reducing environmental pollution.

2.Energy-efficiency:

The production process for dry wood pellets typically requires low energy consumption and is highly efficient.

3.High combustion efficiency:

Dry wood pellets have a high combustion rate, with a calorific value of approximately 3,900 to 4,800 kcal/kg. After carbonization, the calorific value can even reach 7,000 to 8,000 kcal/kg. This makes them a highly efficient fuel option in the biomass energy sector.

4.Cleanliness:

Dry wood pellets contain no sulfur or phosphorus, are non-corrosive to boilers, and do not produce sulfur dioxide or phosphorus pentoxide. Therefore, they do not contribute to acid rain and pollute the atmosphere or the environment. Furthermore, their combustion produces minimal ash, reducing the space required for ash storage and the cost of ash removal.

5.Widely applicable:

Dry wood pellets can be used in a variety of applications. In the biomass energy sector, they can be used for power generation and heating.

6.Dimensional stability:

Dry wood particles are dried and hot-pressed during the production process, so they have good dimensional stability and strength and are not easy to warp or deform.