Biomass Pellet Plant Along With Hammer Mills In Addition To Pellet Plants

Biomass pellet plants are a complete fit to equipment used to create wood pellets, generally for use as pellet fuel. There are several pieces of equipment used to create pellets, including biomass pellet mills. One of the first pieces of equipment in the biomass pellet plant is the hammer mill or chipper. Before pellet compression can take place the raw matter must be reduced to small uniform size. The particle size required does vary on the diameter of pellet to be produced as well as the mm diameter hole in the pellet mill due. For instance, pellet energy is usually created to 6mm pellets, as this diameter of pellet can be used with all pellet stoves. Therefore the particle size formed via the hammer mill, chipper or crusher must be smaller than 6mm. Some pellet boilers can use larger diameter pellets, therefore in these circumstances a large pellet could be shaped such as 8mm, therefore the hammer mill must make particles less than 8mm. These are the minimum requirements for particle size reduction, however there is evidence to support that a smaller particle size of around 3-4mm produces a better quality pellet. The reasons for this is a smaller particle size allows for better warmth penetration, to manufacture a stronger more durable wood pellet fuel.

Learn more about Wood Pellet Plant

Before the raw material is ready for the biomass pellet mill, a dryer is usually included in the wood pellet plant. Most virgin wood resources have a moisture content of around 50%, plus for pellet construction that figure needs to be closer to 15%. Therefore after the hammer mill, a flash dryer or rotary dryer is included into the pellet plant. A flash dryer is also known as a air current dryer or pipe dryer. The wet particles are carried in a hot gas stream because of a pipe network and buffer cylinders. A cyclone separator is then used to separate the dry particles plus wet air. A flash dryer is usually used for raw matter which necessitate only around 10-20 moisture removed. For large wood pellet plants rotary dryers are used as they can be restricted. The pellet mill or biomass pellet mill is the central piece of equipment in the biomass pellet plant. As stated, before pellet compression in the biomass pellet mill can take place, the raw matter must have the correct particle size and the correct moisture content. It must also be free from contaminates such as stone or metal, which could damage the pellet mill rollers and die. Any key feature the raw matter should have for consistent along with efficient quality pellet manufacture, is material constituency its self.