Biomass pellets are at present the most common and well known form of pellets used for fuel. Most wood pellets at this time accessible on the market are also premium biomass pellets. Premium wood pellets are the higher grade of biomass pellet fuel. To make a premium grade fuel pellet most or all of the bark must be removed from the wood. Also only certain species of wood are generally used, these include pine, spruce in addition to oak. The reasons for this is a premium quality biomass pellet also has to produce a very low ash content, usually below 1%. Premium biomass pellets must also have a very low moisture percentage, below 10% yet many manufactures create pellets by way of between 5-8% moisture. A lower moisture content means a far more efficient burn, which produces more heat, less ash and smoke. For case in point wood chip energy contains around 30% moisture, therefore biomass pellet fires make a far more efficient process. Although at present wood holds the spotlight as ‘the pellet energy’, many other biomass resources can also be processed into fuel pellets, see left for examples.

Learn more about Wood Pellet

A pellet mill is the piece of equipment which is used to process wood as well as other biomass resources into pellets. Due to a combination of heat and pressure the pellet mill reforms the material into pellets of a variety of diverse diameters. The pellet manufacture process though does rely on the right equipment in addition to the right user knowledge. For instance the raw material requires certain properties, for example moisture percentage to make the greatest quality pellets. Therefore we at PelHeat have developed the Wood Pellet Construction Guide to educate people interested in pellets to the principles of construction. The guide is broken up into a step-by way of-step guide including diagrams to illustrate what does as well as what doesn’t work to manufacture quality pellets.

Read more about Softwood Pellet

Premium pellets are a high quality grade of energy pellets. Premium pellets refers to a quality of wood pellet energy manufactured from softwood in addition to hardwood residues. For the softwood premium grade energy pellets pine plus spruce residues are used, as well as for hardwood premium grade energy pellets oak residues are used. For the pellets to meet premium grade requirements quite a few attributes have to be meet. For the premium pellet standard, the ash content of the pellets must be very low, below 1%. To achieve this the species of biomass must make a low ash percentage, but also all, or most of the bark must be removed. To achieve the best incineration efficiency potential, a low moisture content is required. Premium pellets are therefore required to have a moisture percentage below 10%, yet many manufactures produce pellets by means of moisture contents between 5-8%. Compare this to seasoned biomass logs which have a moisture percentage around 30%, it is clear how wood pellets achieve much higher combustion temperatures.

For more information on Small Pellet Mill

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