Biomass pellets refer to solid fuel pellets processed and manufactured using biomass materials such as agricultural and forestry wastes and energy crops. Its production process mainly includes several main stages such as raw material preparation, crushing, drying, granulation, cooling and packaging. The following are the detailed steps for producing biomass pellets:

1. Raw material preparation:The raw materials of biomass pellets mainly include agricultural and forestry wastes such as crop straw, wood chips, sawdust, wheat straw, rice husks, and energy crops such as corn straw and sorghum straw. In the raw material preparation stage, the raw materials must first be collected and classified to ensure the cleanliness and applicability of the raw materials.

2. Crushing:The raw materials are finely crushed to improve the drying effect and subsequent granulation operations. Commonly used crushing equipment includes jaw crushers, hammer crushers, etc. In the crushing process, it is necessary to select appropriate crushing equipment and operating parameters according to the different characteristics and requirements of the raw materials.

3. Drying:The crushed raw materials are dehydrated to reduce the humidity of the raw materials and improve the quality and combustion performance of the pellets. Commonly used drying equipment includes hot air furnaces, fluidized bed dryers, etc. During the drying process, the drying temperature and time need to be controlled to avoid overheating and baking of the raw materials.

4. Granulation:The raw materials that have been crushed and dried are pressed into pellets. Granulation can improve the density and consolidation of biomass pellets, making them easier to store and transport. Commonly used pelletizing equipment includes flat die pelletizers, ring die pelletizers, etc. During the pelletizing process, it is necessary to select the appropriate pelletizer model and operating parameters to obtain high-quality biomass pellets.

5. Cooling:The pellets after granulation are cooled to avoid heat accumulation and spontaneous combustion during packaging and storage. Commonly used cooling equipment includes coolers, cooling conveyors, etc. During the cooling process, the cooling temperature and time need to be controlled to ensure the quality and stability of the pellets.

6. Packaging:The cooled biomass pellets are packaged and encapsulated to protect the pellets from moisture and pollution and extend their service life. Commonly used packaging materials include woven bags, plastic bags, etc. During the packaging process, the sealing and pressure resistance of the packaging materials need to be controlled to ensure the quality and safety of the pellets.

In summary, the production process of biomass pellets requires fine operation and control of parameters in each link to ensure the production of high-quality biomass pellets. In addition, with the continuous advancement of technology and the improvement of environmental awareness, the production process of biomass pellets will also be continuously optimized and improved to achieve a more efficient and environmentally friendly production method.