What Is the Applicable Fuel Humidity Range for Biomass Reciprocating Grates?

I. Optimal High-Efficiency Range Conventional bulk biomass (wood chips, crushed straw, etc.): as-received moisture content 15%~25%, balancing drying speed, combustion stability, and thermal efficiency, adapted to the front drying zone structure of reciprocating grates Biomass formed pellet fuel: as-received moisture content ≤15% (ideal 8%~15%), stable combustion, highest efficiency

II. Allowable Upper Limit (Limit Adaptation Range) Reciprocating grates with optimized drying zone design: can short-term withstand ≤40% moisture content high-moisture agricultural and forestry waste (bark, wet wood chips, etc.), but will significantly reduce thermal efficiency, increase flue gas heat loss, affect furnace temperature, and cannot operate at full load long-term If long-term >40% moisture: difficult ignition, furnace temperature too low, smoldering, severe slagging, increased grate corrosion, unable to operate normally Too low moisture (<8%): prone to rapid combustion, flame escape, local overheating and grate burnout, also requires appropriate regulation

III. One-Sentence Summary Normal stable operation: bulk material 15%~25%; formed pellets 8%~15% Short-term limit: maximum approximately 40% (not recommended for long-term use)