Tuesday, September 25, 2012
Do You know How Wood Pellets are Made?
In this article we'll talk about how wood pellets are produced. Pellets can be made from many forms of biomass besides wood such as paper, cardboard, grain, straw, corn husks, yard wastes and much more. The process for making pellets from all these materials is basically the same but in this post we will focus on making wood pellets.
A pellet is simply material that has been compressed into a pellet type and held together with a binding agent. There are natural binding agents or you need to add binding agents depends upon the material used.
First you need to make sure the size of one's material is appropriate for pelletizing. You can use a chipper or perhaps a hammer mill to crush larger pieces into little poeces. Most chips are nonetheless too big so a hammer mill may be utilized to break them down even more.
The material will be pressed through a die. Die is a piece of metal drilled with holes. In order to compress the supplies, the top from the holes are tapered like a funnel.
The compression and friction heats the pellet and melts the binding compounds. The binding compounds harden and act like a glue that holds the pellet together once the pellets are extruded out from the other side from the die they cool.
Some supplies like softwood have enough natural lignins in them that function as a binder. But other materials have to have some type of binder added. The efficient binders like vegetable oil, flour and corn starch are easily accessible.
The material must be neither also dry nor also wet for well pelletizing. The best moisture content material ought to be controlled in between 10 and 20% based on the material used. In most cases if the material is not currently air dried towards the correct moisture level it'll have to be dried inside a dryer. Dryers are often probably the most energy intensive and expensive part of the procedure so a great deal of dryers are fired by the mill's personal pellets.
This is a brief summary of how wood pellets are produced. Reading this passage can store helpful knowledge for practising wood pellets making. Now that little scale pellet mills are available house owners and companies could make their own pellets for their very own heating or to sell.