wood pellet plant

Wood pellet plants are a complete set up to equipment used to produce wood pellets, generally for use as pellet fuel. The wood pellet plant is also known as complete wood pellet line or pellet plant which refers to a set of complete wood pellet mills is used to produce biomass wood pellets on a large scale. Besides the wood pellet making machine, some other auxiliary equipment are also is used in the pelleting process, such as a hammer mill, crusher, hot stove, rotary dryer, cooler, separator, packing machine etc.

Wood Pellet Plant Process:

1. Chipping & Crushing:
IIn the wood pellet plant before raw materials are made into biomass pellets, they are first reduced into much smaller, uniformly-sized particles. When the thickness is larger than 10 mm or size is greater than 50*50 mm, a wood chipper is needed to chip these materials into smaller pieces. The hammer mill is then used to further crush these small pieces into particles of less than 3 mm in diameter.
2. Drying:  
After raw materials are crushed a dryer is needed since most raw wood materials have a moisture content of about 50%. However, the optimal moisture content for pelletiztion is 13%-15%. Therefore a rotary dryer is included in the wood pellet plant to reduce the moisture content. After crushing and drying you can begin making wood pellets.
3. Pelletizing:
After crushing and drying the raw material properly it is then ready for the pellet mill. The pellet making machine or pellet press is the key piece of machinery in the wood pellet plant. It should be mentioned that impurities in the raw materials like metal or stone,may damage the die and rollers of  wood pellet making machine.
4. Cooling:
Usually after pelletizing, the temperature of wood pellets is between 60-80 degrees and the moisture content is close to 15%. For storage purposes, a cooler must be used to reduce their surface temperature and moisture content.
5. Packing:
Finally is the packing process. In order to protect the wood pellets becoming getting damp and to increase storability, proper packing is necessary. Here we provide you with the best domestic Semi-Auto Packing Machine.