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

The essence of wood pellet processing is to ""use mechanical pressure and the thermoplastic properties of lignin to physically recombine loose wood fibers into a high-density, high-strength, pre-formed fuel."" The entire process, without chemical additives, transforms waste into standardized pellets through three stages: pretreatment (crushing and drying), mechanical extrusion (heating to soften the fibers), and shaping and cooling. This not only preserves the calorific value of the wood but also solves the problem of bulky raw materials and difficult transportation.

2. Characteristics of wet wood log biomass pellet processing equipment

(1) Strengthen pretreatment capacity to adapt to high-moisture raw materials

Equipped with high-efficiency crushing equipment (such as knife crushers and hammer crushers), wet wood (including branches, bark, wet sawdust, etc.) can be crushed into uniform fine particles to prevent large pieces of material from clogging the molding machine.

Use a drum dryer to directly reduce moisture in the pretreatment stage and reduce the subsequent molding pressure.

(2) Special design of the molding mechanism to improve anti-adhesion and wear resistance

The mold and pressure wheel are made of wear-resistant materials (such as high-chromium cast iron, carburized alloy steel), and the surface finish is improved to reduce the "sticking mold" phenomenon caused by the high viscosity of wet materials and extend the life of wearing parts.

The mold aperture is usually large (8-12mm) and the compression ratio (the ratio of mold length to aperture) is low (generally 3-5:1), which reduces the flow resistance of wet materials in the mold and avoids clogging. Some equipment uses ""variable diameter molds"" with a large aperture at the inlet and a small aperture at the outlet, gradually increasing the pressure to adapt to the plasticity characteristics of wet materials

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

(1) Wood processing enterprises

Furniture factories and board factories produce a large amount of wet sawdust and scraps (moisture content 40%-50%). They are processed into pellets through supporting processing equipment and directly used as fuel for the factory's boilers (for heating and drying boards), realizing ""waste resource utilization"" and reducing the cost of purchasing energy.

(2) Forestry bases

Wet branches and trunks (moisture content 50%-60%) produced after forestry felling are crushed, dried and pelletized nearby in the forest area through mobile processing equipment, avoiding long-distance transportation of wet materials (high transportation costs and easy to rot). The pellets can be exported to biomass power plants or heating companies.

(3) Biomass pellet plants

In order to expand the source of raw materials (reduce dependence on dry materials), professional pellet plants are equipped with wet wood processing equipment to process the purchased wet wood waste and produce pellets that meet industrial standards (calorific value 18-22 MJ/kg) for supply to customers such as industrial boilers and distributed power stations.

(4) Agricultural and forestry circular economy projects

In the “Agricultural and forestry waste resource utilization” project, wet wood (such as fruit tree pruning branches, straw and wood mixed waste) is processed into pellets for use in rural central heating, home heating, or as an auxiliary fuel for organic fertilizer production (replacing coal and reducing pollution).

TONY Brand 28-35Ton/Hour Wet Wood Log Pellet Manufacturing Plant can take wet wood, various types of wood - related biomass materials, such as branches, small - diameter logs, and wood shavings, with wet 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:28-35 Ton/Hour

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

3. Moisture: Wet type, about 40%.

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: Wet Wood Log Pellet Production Line

2. Raw Material: All kinds of wet wood Log

3. Moisture Content of Raw Material: 40%

4. Capacity: 28-35 tons per hour

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

6. Main Equipment: Comprehensive Chipper TPC1400-700-250KW, Effective Hammer Mill-TFD85*250-250KW, TONY Large Hydraulic Storage Silo,Rotary Drum Dryer-2.2*24m, 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	Rotary Drum Dryer
1.To Grind Wood Logs φ ≤35cm Into25-55mm Wood Chips.   2.Model: TPC1400-700-250KW With 6 Blades*2sets    3.Capacity:28-35Ton/Hour.	1.To Crush 25-55mm Wood Chips Into 8-14mm Sawdust. 2.Model: TFD85*250-250KW*5sets 3.Capacity: 5.5-7Ton/Hour/Set	1.To Storage Sawdust Before Dryer Control Sawdust Flow Entering The Dryer 2.Model: TCY-45*2sets 3.TONY Uses Galvanized Material	1.To Dry The 40% Sawdust Into 10-15% Sawdust.   2.Model: THGD2.2*24*5sets 3.Capacity: 5.5-7Ton/Hour/Set
Vertical Ring Die Sawdust Pellet Machine	Galvanized Pellets Cooler	Ton Packing Machine	Belt Conveyor
1.To Press Dry Sawdust Into 6-8mm Biomass Pellets 2.Model: TYJ860-III-280KW*7sets 3.Capacity:4-5Ton/Hour/Set 4.New 304SS Type	1.To Cool Pellets From 80-90℃ Into 20-30℃ 2.Model: TCN-10*2sets 3.Capacity:28-35Ton/Hour	1.To Pack Pellets Into 1 Ton/Bags. 2.Model: TBD* 2sets 3.Capacity: 28-35 Ton/Hour	1.To Transport Wood Chips,Sawdust,Pellets. 2.Width: 80cm*28sets 3.Capacity:Designed With The Whole Line

1.Wood Chipping Process:

A.This process is mainly used to grind the wood logs whose diamater is under 35cm 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 comprehensive chipper TPC1400-700-250KW model with 6 flying blades type:

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:28-35Ton/Hour. 

C.TONY effective hammer mill TFD85*250-250KW*5Sets

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. The customer chooses one 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.Sawdust Drying Process:

A.This process is mainly used to dry the sawdust from 40% to 10-15%.

B.Capacity: 28-35 Ton/Hour.

C.TONY use 5 sets of 2.2*24m  rotary drum dryer for this process, TONY hot blast stove is made of firebrick pan, shell with H steel plate as the frame.   There are 3 layers of fire blocking device inside, which can effectively prevent the fire from entering the tumble dryer.Customers can choose to use waste wood, biomass pellets, natural gas, etc. as fuel for the hot air furnace

TONY dryer use spiral tube material, and is not easy to deform.

Unlike other manufacturers with iron plate splicing welding, very easy to deformation.

Main Parts:

(1)TONY's Rotary Drum Dryer Main Body.  (Reducers With Motors and Pips.)

(2)TONY's  Hot Stove.

(3)Fan Blower+Cyclone With Airlock.

5.Pelletizing Process:

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

B.Capacity:28-35Ton/Hour. 

C.TONY brand vertical ring die pellet machine TYJ860-III-280KW*7 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

6.Cooling Process:

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

B.2 sets of TONY galvanized cooler separator                                        

Main Parts:                                                                                                                                   

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

(2)Cyclone And Bags Dust Collectors.  

(3)Fan Blower.

(4)Connect Pipes.

7.Packing Process:

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

B.2 sets 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

Project Advantages: Market competitiveness and environmental value

1.Excellent product characteristics and strong market competitiveness

Biomass pellets have many excellent characteristics. Their calorific value is high, generally 4200-4800 kcal/kg, close to medium-quality coal, and can provide sufficient heat; they have low ash content, and very little ash remains after combustion, reducing cleaning costs and environmental pollution; they have low emissions, extremely low sulfur content (usually <0.05%), and low nitrogen content. The pollutants such as SO₂ and NOₓ produced during combustion are much lower than those produced by burning coal, meeting strict environmental protection standards and are highly favored by customers with high environmental protection requirements. In addition, biomass pellets have a regular shape, mostly cylindrical pellets with a diameter of 6-12mm and a length of 20-50mm. The density can reach 0.8-1.2g/cm³, high hardness, not easy to break, and easy to store and transport, further enhancing the market competitiveness of the product.

2.Significant environmental benefits and high social value

The development of the biomass pellet industry is to ""turn waste into treasure"" for agricultural and forestry waste, realize the recycling of resources, and reduce the pollution of waste to the environment. At the same time, during the combustion process of biomass pellets, the carbon dioxide emissions are basically balanced with the carbon dioxide absorbed during plant growth, achieving "carbon neutrality", helping to alleviate the greenhouse effect and improve air quality. This not only complies with the national environmental protection policy, but also establishes a good corporate image for entrepreneurs, bringing high social reputation and potential business opportunities."

1. Outstanding Environmental Protection and Low Carbon Emissions

Carbon Neutral: Wood pellet fuel is derived from wood processing waste (such as wood chips and sawdust) and is a biomass energy source. The carbon dioxide absorbed during plant growth is roughly balanced by the carbon dioxide released during combustion, making it a ""carbon-neutral"" energy source, significantly reducing its contribution to the greenhouse effect.

Low Pollutant Emissions: Compared to coal, wood pellets produce extremely low levels of pollutants such as sulfur dioxide and nitrogen oxides (often far below environmental standards) when burned, and dust emissions are also low, effectively reducing air pollution and meeting increasingly stringent environmental regulations.

2. Wide Source of Raw Materials and Controllable Costs

Abundant Raw Materials: The main raw materials are scraps, wood chips, sawdust, branches, and bark generated during wood processing. These materials are readily available and stable in forestry, furniture manufacturing, and papermaking. They can even be "turned waste into treasure" reducing the environmental impact of landfills or incineration.

Cost Advantages: The raw materials are mostly industrial waste, resulting in relatively low procurement costs. Furthermore, some regions offer subsidies for biomass energy projects, further reducing production and usage costs. Compared to other energy sources like natural gas and fuel oil, biomass energy is economical.

3. High Combustion Efficiency and Efficient Energy Utilization

High Density: Wood pellets are compressed and formed, resulting in a density significantly higher than that of raw wood or sawdust (typically 1.1-1.3 tons/cubic meter). They are less prone to loosening during combustion, maintaining a stable combustion state and a long-lasting flame. They also offer high thermal efficiency (typically exceeding 85%, compared to the 40%-50% of loose firewood).

Stable Combustion: The pellets have a regular shape and uniform size, facilitating automated feeding and combustion control. They can be precisely adjusted with a matching pellet stove, reducing energy waste and making them suitable for applications requiring a stable heat source.

4. Convenient Storage and Transportation

Small Size: Compressed pellets are only 1/5-1/8 the volume of raw sawdust, significantly saving storage space. They can be stored in bags or in bulk, eliminating the need for specialized storage facilities, making them suitable for homes, businesses, and other environments.

Low Transportation Costs: The high density allows for higher energy transport per unit volume, improving transportation efficiency and reducing transportation costs. Furthermore, the pellets are resistant to moisture (some products are treated to prevent moisture), minimizing loss during transportation.

5. Diverse Application Scenarios

Civilian Applications: They can be used for home heating and cooking (using devices such as pellet fireplaces and pellet stoves). They are simple and clean to operate, replacing traditional coal and firewood to improve the indoor environment.

Industrial Applications: They can be used as boiler fuel to provide steam or hot water for factories, hotels, and hospitals. In agriculture, they can be used for greenhouse heating and drying agricultural products (such as grains and medicinal herbs).

Power Generation: They can be used as fuel in biomass power plants, either mixed with coal or burned alone to generate electricity, contributing to the transformation of the energy structure.