Pellet Drying 

Wood pellets and biomass pellets are precision-engineered energy carriers whose marketability, combustion performance, and resistance to degradation in outdoor or bulk storage are critically dependent on their moisture content at the point of manufacture. The EN ISO 17225-2 standard for premium (A1) wood pellets specifies a maximum moisture content of 10%, and this standard is written into virtually all long-term biomass fuel supply contracts for power utilities and industrial heating customers in Europe and other regulated markets. Achieving this specification consistently is not simply a matter of using any available drying technology—pellet drying demands systems that can handle the mechanical fragility of freshly pressed pellets without generating fines, maintain airflow uniformity across the pellet mass to prevent moisture gradients, and operate at temperatures low enough to avoid pellet surface scorching, charring, or pellet binder reactivation that would cause pellets to re-stick and deform in the dryer.