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

(1)Crushing Equipment: Refines Dry Wood Chips to Suitable Particle Size

Dry wood chips cannot be fed directly into the pelletizing machine and must be refined into wood pellets using a hammer mill. The principle is as follows:

The core component of the hammer mill is a high-speed rotating rotor (800-1500 rpm) with 2-4 rows of manganese steel hammers evenly distributed across it. Once the dry wood chips enter the crushing chamber, they are repeatedly struck and sheared by the high-speed hammers, while rubbing against the toothed plates on the chamber's inner wall, ultimately breaking them into fine wood chips. The crushed material is then screened through a bottom screen, leaving unqualified coarse material within the chamber for further crushing.

(2)Core Molding Equipment: Converts Wood Chips into High-Density Pellets

The molding equipment is the core of the entire production line. Currently, the mainstream equipment is the ring die pelletizer, which operates on a continuous "extrusion - forming - cutting" process.

The ring die is the core component of the pelletizer and is an annular steel die (mostly made of 40Cr or alloy steel) with evenly distributed forming holes (diameter 6-12mm, adjusted according to pellet size). As the pre-pressed pellets rotate with the rollers toward the inside of the ring die, the extrusion pressure between the rollers and the die increases dramatically (to a pressure of 50-150 MPa). Simultaneously, friction between the pellets and the die's inner wall and forming holes generates high temperatures (up to 80-120°C).

Under these high temperatures and pressures, the cellulose and hemicellulose components in the sawdust soften, forming a sticky "binder" that tightly binds the pellets together. Simultaneously, the pellets are forced into the die's forming holes, forming a continuous column of pellets that are extruded from the outside.

(3)Finished Product Post-Processing Equipment: Ensuring Stable Pellet Quality

Newly formed biomass pellets are hot and have a slightly higher moisture content. They require cooling and screening in post-processing equipment to ensure storage stability and uniformity.

2.Characteristics of dried wood chips biomass pellet processing equipment

(1)Wide adaptability of raw materials:

It can process 40 to 50 kinds of waste materials such as dry wood chips, sawdust, straw, rice husks, etc., and compress them into pellets of different specifications after pretreatment. For raw materials such as dry wood chips with high crude fiber content, light weight and loose texture, some equipment adopts mechanical forced feeding to solve the feeding problem.

(2)Excellent product performance:

The density of the processed pellet fuel is greater than 1.1 (the density of the raw material is usually 0.6-0.8), with the advantages of high calorific value, complete combustion, low cost, etc., and it is easy to store and transport, and can replace traditional energy sources such as coal and natural gas.

(3)Environmental protection and energy saving characteristics:

The fuel combustion efficiency is over 90%, and the staged combustion technology is used to reduce pollutant emissions and reduce dependence on petrochemical energy, which is in line with the low-carbon and environmentally friendly development direction.

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

The equipment for processing dry wood chips into biomass pellets has a wide range of applications, covering energy production, industrial processing, residential life and other fields. Its application scenarios are closely related to the characteristics of the processed biomass pellet fuel. 

(1)Application in the field of energy production Biomass power generation:

The processed biomass pellets can be used as fuel for biomass power plants and converted into electricity through combustion to realize the utilization of renewable energy. Industrial boiler fuel: In enterprise production, biomass pellets can replace traditional coal for boiler combustion, provide heat energy for production and reduce pollutant emissions. 

(2)Application in the field of industrial processing Pretreatment of raw materials for board production:

Dry wood chips are processed into sawdust and wood chips, which can be used as raw materials for the production of particleboard, fiberboard, plywood and other boards, giving full play to the value of wood itself. Auxiliary processing for furniture manufacturing: Dry wood chips are crushed into wood chips suitable for making furniture, and further processed by cutting, grinding and other processes to make various parts of furniture. 

(3)Application in the field of residential life Heating for residents:

Biomass pellet fuel has a long burning time and high calorific value. It can be used in fireplaces, heating equipment, etc. in residents' homes to meet winter heating needs. Household appliance fuel: Some household biomass fuel appliances use biomass pellets as fuel to provide hot water or heating for daily use.

(4)Application in agriculture and environmental protection：

Agricultural waste resource utilization: Related equipment can also process agricultural waste such as crop straw. The processed biomass pellets realize the recycling of agricultural resources and meet environmental protection requirements.Environmentally friendly energy substitution: Under the current resource and environmental situation, biomass pellet fuel is an environmentally friendly energy source. The application of its processing equipment can help reduce dependence on traditional fossil energy and alleviate environmental problems such as smog.

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TONY Brand 20-25Ton/Hour Dried Wood Chips Pellet Manufacturing Plant can take dried wood chips, various types of wood - related biomass materials, such as wood pallets ,branches, wood logs, and wood shavings. After pretreatment and processing, dried wood chips 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 chips

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

4. Application: All kinds of  wood chips or more waste wood raw materials

Suitable customers: Solid wood furniture production, artificial board processing (plywood, fiberboard, particleboard), wood component processing, construction and decoration, packaging and logistics, such as pallets and wooden boxes, will generate a large amount of waste wood chips due to repeated use, size mismatch or changes in cargo transportation needs. Paper and pulp production.Where waste wood chip resources are advantageous.

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

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1. Project Name: Dried Wood Chips Pellet Production Line

2. Raw Material: All kinds of dried wood chips

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

4. Capacity: 20-25 tons per hour

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

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

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1.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.

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2.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.

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3.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*5sets

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

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4.Cooling Process:

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

B.Capacity:20-25Ton/Hour.                                                   

C.TONY brand galvanized pellets cooler separator*1set                    

Main Parts:                                                                                                                                   

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

(2)Cyclone And Bags Dust Collectors.  

(3)Fan Blower.

(4)Connect Pipes.

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5.Packing Process:

A.This process is mainly used to pack pellets into 1Ton/Bags. 

B.Capacity:20-25Ton/Hour.

C.TONY brand ton packing machine*1set 

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

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Significance of the Dry Wood Chip Processing Biomass Pellets Project

1.Environmental Protection

As a clean energy source, biomass pellets offer the advantages of high calorific value and low pollution. They can significantly reduce the use of traditional fossil fuels, lower greenhouse gas and other pollutant emissions, and contribute to improved air quality and environmental protection.

2.Resource Recycling

Biomass pellets utilize agricultural and forestry waste, achieving resource recycling and reducing the negative impact of waste on the environment. They also provide an effective solution for waste management.

3.Energy Security

As a renewable energy source, biomass pellets can alleviate dependence on traditional energy sources such as oil and coal, improve energy security, and safeguard national energy security.

4.Economic Development

The development of the biomass pellet industry can drive the development of related industrial chains, create employment opportunities, and promote economic growth. Particularly in rural areas, the production and sale of biomass pellets can increase farmers' incomes and boost rural economic development.

5.Technological Innovation

The production process of biomass pellets involves a variety of technologies and equipment, such as hammer mills and biomass pellet machines. The development and application of these equipment and technologies promote technological innovation and industrial upgrading.

6.Social Benefits

The use of biomass pellets can provide a stable source of heat for homes and businesses, especially in remote areas with insufficient energy supply. As an alternative energy source, biomass pellets can improve residents' living conditions.

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Biomass pellets (i.e., wood pellets) processed from wood chips are a clean, renewable biomass energy product. Their energy advantages are primarily reflected in their high calorific value, easy combustion, and strong stability.

1.High density + high calorific value, high energy efficiency

After compression and pelletization, wood chips are significantly reduced in volume (density can reach 1.1-1.3 tons/m³, 4-5 times that of loose wood chips), while their energy density per unit volume is significantly increased (lower calorific value is approximately 4200-4800 kcal/kg, close to that of medium-quality coal). Heat release is concentrated during combustion, resulting in a thermal efficiency 30%-50% higher than directly burning loose wood chips. This makes them suitable for applications with stable heat demand (such as industrial boilers and biomass power generation). 

2.Complete combustion and low pollutant emissions.

Wood pellets have a uniform structure and controllable moisture content (dried to 10%-15% during processing). They are not prone to charring during combustion and contain no harmful elements such as sulfur and phosphorus. Exhaust emissions of sulfur dioxide and nitrogen oxides after combustion are extremely low (far lower than those from coal combustion). Dust emissions can also be reduced to meet environmental standards with simple treatment.

3.Convenient storage and transportation, strong stability.

The pellets have a regular shape (mostly cylindrical, 6-10mm in diameter and 10-30mm in length) and good fluidity. They can be transported in bags or bulk, requiring only one-fifth the storage space of loose wood chips. Furthermore, the pellets have a low moisture content and are resistant to mold and mildew. They can be stored for 6-12 months, eliminating the need to worry about raw material deterioration.

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