Biomass fuel Biomass fuel refers to an energy form that uses biomass materials as fuel, mainly including agricultural and forestry wastes such as crop straw, wood chips, sawdust, bagasse, and rice bran. It is characterized by a wide range of sources, belonging to renewable energy, and producing fewer pollutants during the combustion process.
Molded biomass pellets Molded biomass pellets are a processed biomass fuel. It is made by crushing biomass raw materials (such as crop straw, forestry waste, etc.) and then cold-forming them through rollers and ring dies at room temperature or a certain temperature. The density of the pellets after molding is high (1.1-1.3t/m?), which is convenient for storage and transportation.
Although both molded biomass pellets and biomass fuels belong to the category of biomass energy, there are significant differences between the two in terms of processing technology, physical form, combustion performance, storage and transportation, and application range. Molded biomass pellets have become an important development direction of biomass energy due to their advantages such as high density, high calorific value, and low pollution. In non-prohibited areas, boilers burning biomass fuels must be equipped with high-efficiency dust removal equipment.
1. Processing technology
Biomass fuel: usually unprocessed biomass raw materials, directly used for combustion.
Molded biomass pellets: need to go through processes such as crushing, mixing, drying, and extrusion to compress loose biomass raw materials into high-density pellets.
2. Physical form
Biomass fuel: various forms, including loose straw, wood chips, branches, etc.
Molded biomass pellets: usually granules with a diameter of 6-10 mm and a length of 4-5 times its diameter.
3. Combustion performance
Biomass fuel: low combustion efficiency, easy to produce black smoke, and incomplete combustion.
Molded biomass pellets: significantly improved combustion performance, complete combustion, high calorific value (3900-4800 kcal/kg), and less pollutant emissions during combustion.
4. Storage and transportation
Biomass fuel: large volume, low density, high transportation and storage costs.
Molded biomass pellets: small volume, high density, easy to store and transport.
5. Scope of application
Biomass fuel: mainly used for living energy in rural areas.
Molded biomass pellets: suitable for industrial boilers, fireplaces, power generation and other fields, and can also be used as a source of high-quality organic potassium fertilizer.
6. Environmental protection characteristics
Molded biomass pellets, as a processed biomass fuel, have significant environmental advantages:
Low carbon emissions: no sulfur dioxide and phosphorus pentoxide are produced during combustion, and no acid rain will be caused.
Resource recycling: convert agricultural waste into high-value-added energy and reduce waste pollution to the environment.
Reduce black smoke: full combustion, less black smoke, and improve air quality.
