Calorific Value Conversion: 1 ton of biomass ≈ 0.6 tons of coal
The core of the substitution relationship between biomass pellets and coal lies in the comparison of their calorific values. Taking common pine wood pellets as an example:
Calorific value is approximately 4200 kcal/kg, equivalent to 60% of the calorific value of standard coal.
1 ton of pellets ≈ 0.6 tons of standard coal (theoretical value)
In practical applications, moisture content needs to be considered; the calorific value of dry pellets increases by 10%.
Hidden Value of Environmental Advantages
In addition to direct calorific value conversion, biomass pellets have additional advantages:
Carbon emissions: The CO₂ emitted during combustion can be reabsorbed by plants.
Sulfur content: Only 1/10 of that of coal, reducing the risk of acid rain.
Ash utilization: Rich in potassium and phosphorus elements, it can be directly used as fertilizer.
Three Realistic Factors Affecting Substitution Efficiency
The actual substitution amount will fluctuate due to specific conditions:
Boiler type: Dedicated biomass boilers increase efficiency by 15%.
Mixing ratio: When co-firing with coal, feeding parameters need to be adjusted.
Transportation radius: Economic efficiency decreases significantly beyond 50 kilometers.
