Biomass pellet production line reduces waste and provides renewable green energy by converting organic waste (such as wood, sawdust, straw, crop residue, etc.) into high-density biomass pellet fuel. The process of the whole production line includes steps such as raw material preparation, crushing, drying treatment, sieving, pellet molding, cooling, screening, packaging, etc. Each link is interlocked to ensure the quality and efficient production of the final product. The following is the main process flow of biomass pellet production line:
Raw material preparation
Raw material preparation is the first step of biomass pellet production line. Raw materials can be wood, sawdust, crop straw, rice straw, bamboo and other organic materials. According to different raw materials, they usually need to be crushed or pulverized to reduce the size of raw materials for subsequent processing. Large pieces of wood or other raw materials are crushed into small particles or fine powder using a wood grinder or sawdust grinder.
Crushing and screening
Raw materials are further processed through a pulverizer to ensure uniformity and proper size of the raw material particles. After pulverization, the material is screened through a sifter to remove impurities and ensure the quality of the final pellets. Sieving can be done by selecting different mesh sieves as per requirement to ensure uniformity of the granules.
Drying
Biomass feedstock usually contains high moisture content (usually between 30% and 60%), which affects the quality and combustion efficiency of the pellets. Therefore, the moisture of the feedstock must be reduced to a suitable level (typically 10-15%) by means of a dryer. The drying process not only helps to improve the quality of the pellets, but also increases the efficiency of the pellet mill.
Pellet molding
After crushing, drying and sieving treatment, the raw material enters the biomass pellet mill (also known as compression molding machine). Inside the pellet mill, fine materials are compressed into small particles with high density through the action of high temperature and pressure. This process not only increases the energy density of the feedstock, but also makes it easier to transport and store.
Cooling and Screening
Freshly formed biomass pellets have a high temperature, so they need to be cooled by a cooler to avoid deformation or breakage during storage and transportation. The cooled pellets are sifted through a screening machine to ensure uniform pellet size and to remove any unqualified pellets.
Packaging and Storage
After cooling and screening, the pellets enter the packaging system for automatic packaging. The pellets are usually packed into bags or tonne bags for easy storage and transportation. The packing process is done through automated equipment, ensuring efficient and accurate packing.
Finished Product Output
Finally, the biomass pellets that have gone through all the treatment processes will be stored in the finished product warehouse, ready to be shipped to the users. The finished pellets can be widely used for heating, power generation, industrial boiler combustion and other purposes, becoming an environmentally friendly and efficient green energy.
