straw pellet machine

straw pellet machine Introduction

The straw pellet machine, also known as biomass pellet machine or biomass fuel pellet machine, is a mechanical device used to compress agricultural crop residues (such as corn stalks, wheat straw, rice straw, soybean stalks, wood chips, peanut shells, cotton stalks, bagasse, etc.) and other biomass materials into high-density, small-volume, high-calorific-value fuel pellets. These pellets are typically used to replace traditional fossil fuels such as coal and natural gas, serving as an eco-friendly energy source for household heating, industrial boilers, power plants, and biomass energy equipment.

Characteristics of straw pellet machine

Environmental Protection and Energy Saving

Converting agricultural waste into efficient energy sources reduces incineration and field waste, thereby decreasing environmental pollution and promoting resource recycling.

High-Density Fuel

Using compression technology to turn loose straw into high-density pellets improves storage and transportation efficiency, reduces space requirements, and lowers costs.

Combustion Efficiency

Straw pellets burn fully with high calorific value, suitable for household heating, hot water, industrial boilers, etc., replacing fossil fuels and reducing carbon emissions.

Versatility

Adaptable to various raw materials such as wood chips, herbaceous plants, and crop residues, the equipment can be adjusted to process different sizes to meet diverse demands.

Sturdy Structure

Designed for durability, key components use wear-resistant materials, prolonging machine life, reducing maintenance frequency, and lowering long-term costs.

Automation

Modern equipment integrates automatic control systems for feeding, temperature, and pressure regulation, reducing manual operation, enhancing production efficiency, and stability.

Easy Operation

User-friendly interface enables quick learning and understanding, reducing operational errors and minimizing production interruptions.

Simple Maintenance

Designed for easy cleaning, key parts are detachable for daily maintenance, ensuring hygiene and efficiency.

Moderate Size

Compact and suitable for farms and small businesses, occupying minimal space, easy to move, and adaptable.

Cost-Effectiveness

Despite initial investment, long-term savings in fuel costs, reduced raw material waste, and increased added value result in significant economic returns.

Structure of straw pellet machine

Feeding system

Consisting of a hopper and a feeder (such as a screw feeder), it is responsible for uniformly and quantitatively feeding the raw materials into the machine.

Crushing device (optional)

For larger raw materials, a crusher is equipped to preprocess the materials into sizes suitable for pelletizing.

Mixing machine

Used to mix the crushed raw materials with additives (such as binders or combustion aids) uniformly to ensure consistent nutritional or combustion properties of the final product.

Conditioning system

May include steam or heat treatment to increase the temperature and moisture content of the raw materials, facilitating molding and improving pellet quality.

Pelleting chamber

The core component containing the die (ring die or flat die) and rollers, where the raw materials are compressed into pellets under high pressure.

Cutter

Located at the outlet of the die, it cuts the formed strands into pellets of a certain length.

Cooling system

After pelleting, the pellets need to be rapidly cooled, typically achieved through a cooler to reduce temperature, increase hardness, prevent clumping, and facilitate storage.

Screening device

Screens out unqualified pellets to ensure consistent size and quality of the finished product, removing fines.

Transmission device

Consisting of motors, gearboxes, and transmission shafts, it provides power and ensures the linkage of various components.

Lubrication system

Automatic or manual lubrication system to provide lubrication for moving parts, reducing wear, and extending machine life.

Control system

Modern equipment often includes an electronic control system to adjust operating parameters, monitor status, and provide fault warnings.

Advantages of straw pellet machine

Environmental protection and energy saving

Converting straw and other agricultural waste into efficient energy sources reduces burning and field waste, lowers environmental pollution, and promotes resource recycling.

High-density fuel

Using compression technology to convert loose straw into high-density pellets improves storage and transportation efficiency, reduces space occupation, and lowers costs.

High combustion efficiency

Straw pellets burn fully with high calorific value, suitable for household heating, hot water, industrial boilers, etc., replacing fossil fuels and reducing carbon emissions.

Versatility

Adaptable to various raw materials such as wood chips, grass, and crop residues, and adjustable to different sizes to meet diverse needs.

Sturdy structure

Durable design with key components made of wear-resistant materials, ensuring longevity, reducing maintenance frequency, and lowering long-term costs.

High level of automation

Modern equipment integrates automatic control systems for feeding, temperature, and pressure regulation, reducing manual operation, and enhancing production efficiency and stability.

Easy operation

User-friendly interface, easy to learn and operate, enabling quick adaptation and minimizing operational errors and production interruptions.

Simple maintenance

Designed for easy cleaning, with key parts easy to dismantle for regular cleaning, maintenance, and hygiene, maintaining efficiency.

Moderate size

Suitable for farms and small enterprises, occupying a small area, easy to move, and adaptable.

Cost-effectiveness

Despite requiring initial investment, it saves fuel costs in the long run, reduces material waste, increases added value, and offers good economic returns.

Classification of biomass pellet machines

The biomass pellet machine processes materials such as paulownia, cypress, poplar, fruitwood, agricultural crop straw, bamboo shavings, etc. These materials are crushed into sawdust-like bran and then further processed into biomass fuel.

Due to variations in raw materials used in different regions, the biomass pellet machine is known by different names such as wood pellet machine, straw pellet machine, sawdust pellet machine, wood chip pellet machine, bamboo pellet machine, fuel pellet machine, rice husk pellet machine, etc. It is also referred to as a pelletizer or pellet maker. Despite the differences in terminology, they all refer to the same type of machine.

Based on the type of die used, it can be further categorized into flat die pellet machine and ring die pellet machine. The ring die pellet machine can be further classified into vertical ring die pellet machine and horizontal ring die pellet machine.

According to the working principle of the feed pellet machine, it can be classified into die roller pellet machine and screw extrusion pellet machine. According to the purpose of the feed pellet machine, it can be classified into single-feed pellet machine and mixed-feed pellet machine.

Parameter of biomass pellet machines