Fully automatic and efficient biomass straw pellet fuel production line

Product Specification

A biomass wood pellet production line is an environmentally friendly project that processes various biomass waste materials, such as straw, branches, and rice husks, into solid fuel pellets. The production process of a wood pellet processing plant primarily includes wood chipping, sawdust crushing, sawdust drying and storage, pellet extrusion, and wood pellet packaging.

A large amount of biomass waste in our daily lives can be used to make wood pellets. Common raw materials for wood pellet processing include:
-Crop residues. This includes cotton stalks, wheat straw, rice straw, corn stalks, corn cobs, and other cereal straws.
-Sawdust. Wood chips have excellent pelletizing properties. Sawdust-based biomass pellets produce stable yields, smooth pellets, and high hardness.
-Small wood shavings. Because wood pellets are large and difficult to fit into a wood pellet machine, they must be crushed in a sawdust crusher before use.
-Sanding powder used in wood panel and furniture factories. Sanding powder has a light specific gravity and is prone to clogging. It is recommended to mix wood chips and pellets together, with a ratio of approximately 50% each.
-Wood panel and wood chip offcuts. These raw materials need to be crushed before use.
-Fiber materials. For this type of raw material, the fiber length must be controlled, generally no longer than 5mm.

1. Reduction System:
We offer a variety of reduction systems, including shredding, chipping, crushing, wood peeling, wood splitting, and pallet shredding, depending on the size and impurities of the raw material. These systems produce 3mm sawdust that meets the feed specifications of the wood pellet machine.

2. Cleaning System
Most raw materials contain impurities such as dirt and nails. The cleaning stage can be located before or after the reduction process, depending on the specific raw material. Wood pellet lines using multiple raw materials sometimes require multiple cleaning stages.

3. Batching and Mixing:
This stage may be required when customers use different types of raw materials, or when using the same type of raw materials with varying physical properties, to ensure pellet quality. Of course, a few customers also use adhesives. Batching and mixing systems are required to ensure uniformity of the material.

4. Drying System
Prior to pelletizing, the raw materials must be dried. Depending on the raw material used, the moisture content should be between 13% and 15%. For the pelletizing process to proceed smoothly, the raw materials must have the appropriate moisture content. Drying the raw materials to the appropriate moisture content is crucial for producing high-quality pellets.

5. Pelletizing System
The finished pellets have a diameter of 2-12mm. The drive system utilizes high-quality imported bearings, and the ring die features multiple innovative designs to enhance die hardness, prevent cracking, and further increase production capacity and service life.

6. Cooling System
Pelletizing, cooling, weighing, and packaging. The cooled pellets are generally no more than 5°C above room temperature, with a moisture content below 10%, making them easy to store.

7. Screening System
After pelletizing, in addition to qualified wood pellets, some unqualified pellets and dust are produced. Screening equipment is used to separate qualified pellets from unqualified ones. Qualified wood pellets go directly to the packaging section, while unqualified pellets require re-pelletizing.

8. Packaging System
MIKIM can adjust its packaging equipment to meet customer requirements, and can store the pellets in bulk or in steel silos.

FAQ
Can rice husks be used to make pellets?
Yes, of course. Rice husks can be used to make pellet fuel. However, it's important to ensure the husks maintain a certain moisture content, around 10%.

What are the uses of wood pellets?
Wood pellets are typically used directly as fuel. These fuel pellets are often used to heat factory boilers and homes. Alternatively, wood pellets can be carbonized in a carbonizer to make charcoal pellets.

For more information on process design, equipment layout, plant construction plan, single machine equipment quotation, turnkey quotation, etc., please feel free to contact us.

Finished product display

Equipment photos

Certificate of Honor