This article details the production process used to manufacture wood pellet fuel for the home heating market. This is a proven commercial process. This fuel meets many of today's concerns for renewable energy and provides advantages to meet environmental concerns.
The process starts with the delivery of dry wood refuse that is free of bark or contaminates. The deliveries are made with eighteen wheelers; the trucks are placed on a hydraulic truck dump for unloading. The material then enters a screening process as it exits this process it is then introduced to bucket ladder conveyor, which transports the material to a large silo for storage. The wood fiber then exits the silo as an on demand flow, and then enters a grinding process to reduce the size of wood fiber; the material is reduced to a fourteen mesh size. After the material has been ground it is then transported by pneumatic means to feeding chambers and is ready to be introduced to the pellet mills. Upon delivery to the pellet mills the product the actual formation of the pellet occurs, where free flowing material is fed into the die cavity where the extrusion type takes place.
Here the feed stock is forced through the die holes by pressure from the rolls held in the die for a period of time and then extruded as a solid 6mm cylinder to be broken of by the cut off knives and discharged from the pellet mill to subsequent cooling and drying. The actual pelleting process occurs after the wood waste that has been through all the preparation steps required to bring the wood waste to a consistent composition and moisture content.
Pellets made in North America are produced with out added adhesives, thus the process as it has developed today requires no additives, but rather uses the natural adhesives present in the wood to bind the pellet together. There are a number of important characteristics of wood that impact on the pellet formation. For simplicity's sake and as far as the pelleting process is concerned, wood is made of three basic components
Cellulose- in layman's terms, the fibre which constitutes 40 to 50% of the wood composition
Hemicelluloses- constitutes 20 to 35%
Lignin's- which constitute 15 to 35%
The self bonding of wood to form a pellet involves the thermo- plastic flow of the polymeric material, basically the lignin and the hemicelluloses naturally occurring in the wood feedstock. These materials that serve as the glue in the process, becoming plastic and flows at specific conditions of temperature and moisture. Further, it is documented that as the moisture increases in these polymeric components, the softening temperature is reduced.
After the pellets have left the cooling chamber, they are conveyed to a storage silo for on demand flow to a screening process. The next process after screening is the introduction to a bagging process. The bagger forms sheet plastic into a sealed bag and packages the pellets, they are then conveyed to a palletizer for placement on pallet. The loaded pallet is conveyed to a hooder machine that wraps plastic completely over the entire pallet, for a moisture barrier. Finished product then is removed by forklift and placed on a finished storage yard. At this point the finished product is ready for shipment. The means of delivery are closed and flatbed eighteen wheelers and are loaded by forklifts. The product exits the plant site and is delivered all across North America.
Bayou Wood Pellets are a high quality premium grade pellet fuel made from primarily 100% red oak .
A clean, state-of-the-art, and professional facility coupled with optimized procedures and standards.
If it was not for our customers, we would not be here. We appreciate your continued loyalty.
Bayou Wood Pellets LLC 1315 Highway West Monroe, LA 71291 Ph: (318)397-0000 Fax(318)397-8431
National Pellet delivers daily to Connecticut, Massachusetts, Southern NH, Southern VT, Southern Maine and Rhode Island. For more information or to get a Dealer or Residential home delivery quote visit click here for our dealer locator.