1. There is virtually no ash left after burning, which reduces the storage space for charcoal residues and reduces the cost of charcoal residues.

2. The ash produced by burning is a high quality organic potash that can be recycled.

3. The heat capacity of biomass fuel is 3900~4800kcal/kg and 7000~8000kcal/kg after carbonisation. 4. Biomass fuel does not contain sulphur and phosphorus and does not produce sulphur dioxide and phosphorus pentoxide when burned, which does not corrode the boiler, prolongs the life of the boiler and does not cause environmental pollution.

5. Biomass fuel is clean and hygienic, easy to feed, reduces the labour intensity of workers, greatly improves the working environment and reduces the company's labour costs.

6. The volatile matter content of straw is usually 76-86% and starts to precipitate at around 200°C. If the combustion air supply is inadequate, unburned volatiles are transported with the air stream and black smoke is formed. Biomass pellet fuels are better than dense homogeneous fuels because they restrict the outflow of volatile components, prolong the combustion time and promote an uneven air supply.

7. According to volatile matter analysis, straw is a loose skeleton that is dissolved by air currents to form volatile black flocs. Closer to the carbon structure of the so-called biomass pellets is the so-called flame-wrapped coke.

According to the Swedish and EU classification of biomass pellets, it is blue in colour. Biomass pellets with medium classification criteria can be roughly described by the following characteristics: biomass pellets with a typical diameter of 6-10 mm, a length of 4-5 times the diameter, a fines content of less than 1.5-2.0 %, a dry matter content of less than 15 %, an ash content of less than 2 % and a sulphur and chlorine content of less than 0.07 % and 0.5 %.