Material Overview
Logs and large wood are among the most established and widely utilized feedstocks for industrial biomass pellet production. They are mainly sourced from forestry operations, logging residues, thinning wood, and oversized wood offcuts from sawmills. These resources are abundantly available in regions with mature forestry industries, including North America, Europe, Russia, Southeast Asia, and South America.
From an industry perspective, wood pellets represent the largest and most stable segment of the global biomass pellet market. Long-term demand is driven by industrial boilers, combined heat and power (CHP) plants, and district heating systems, supported by decarbonization policies and renewable energy targets.
Typical calorific value of wood pellets produced from log-based raw materials ranges between 16–20 MJ/kg (approximately 3,800–4,800 kcal/kg), depending primarily on moisture control and pellet density.
Recommended Process Flow
Raw Logs → Wood Chipping → Drying → Grinding → Pelletizing → Cooling → Packaging
Key Equipment Configuration
Wood Chipper
Converts raw logs into uniform wood chips suitable for efficient drying.
Rotary Drum Dryer
Reduces moisture content of wood chips to the pelletizing range (typically 10–15%).
Hammer Mill
Grinds dried wood chips into particles below 10 mm for stable pellet formation.
Pellet Machine
Core equipment that compresses material into dense, high-quality biomass pellets.
Counterflow Cooler
Gradually cools hot pellets to improve durability and storage stability.
Packing Machine
Enables small bag or ton bag packaging according to market requirements.
Why This Solution Works
Log-based raw materials present two inherent challenges: large initial size and high, uneven moisture content. By introducing wood chipping as the first step, particle size is standardized, allowing efficient heat transfer during drying. Drying at the chip stage significantly reduces energy consumption and minimizes mechanical stress on downstream equipment.
Once moisture is properly controlled, hammer milling becomes more efficient and consistent, producing uniform particles that are ideal for ring die pelletizing. This proven configuration ensures stable output, consistent pellet density, and predictable energy performance, making it a widely adopted solution in industrial pellet plants.
Processing Notes & Technical Considerations
Drying at the wood chip stage ensures efficient heat transfer and stable moisture control, which is essential for industrial-scale pellet production.
Target particle size before pelletizing: <10 mm.
Excess moisture may reduce pellet output and negatively affect durability.
End Product & Applications
Finished wood pellets are widely used in industrial boilers, combined heat and power (CHP) plants, district heating systems, and biomass power stations. Due to standardized size, stable calorific value, and convenient transportation, wood pellets are actively traded in international energy markets. Data Reference & Industry Sources
The calorific value ranges, application regions, and industry characteristics referenced on this page are based on long-term statistics and analytical reports published by Bioenergy Europe, FAO, IEA Bioenergy, and recognized global biomass energy research institutions.
