What are the phenomena of insufficient combustion of pine wood pellets?

Pine wood pellet fuel, a high-quality biomass pellet fuel, is generally used in biomass pellet burners and biomass steam generators.

1. A large amount of ash and slag are discharged when pine pellet fuel is burned. Generally, when pine pellets are burned, if the combustion is sufficient, there is very little ash, generally gray-white powder, and if it is black slag, there will be insufficient combustion. 

2. When pine pellet fuel is burned, black smoke will be emitted. Generally, pellet burners and steam generators with insufficient combustion will emit black smoke.

3. If the boiler feed volume is reached, but the actual utilization cannot reach it, the production demand cannot be met, and this may be due to insufficient combustion.