View Full Version : Describe the Process of 4-5T/H Wood Pellet Plant

03-26-2015, 10:46 PM
4-5T/H wood pellet production line or 4-5T/H wood pellet plant is designed for industrial production to make biomass pellets from any type of agro and forestry wastes with output from 1 ton to 10 ton per hour. The finished wood pellets are widely used for heating purposes of industrial boilers and large power plants as well as home use to alleviate the energy crisis and meet eco-friendly requirements. 4-5T/H wood pellet plant mainly consists of three sets of wood pellet machines, a set of drying system, a grading sieve, a hammer mill, storage bin, mixer, granulation bin, refining system, granulation, screening, packaging process, etc.

Process of 4-5T/H Wood Pellet Plant: (http://www.woodpelletmillchina.com/pro/4t_wood_pellet_plant.html)

Raw materials Preparation and Crushing Process:

Wood pellets can be made from sawdust, wood shavings, wood chips or wood logs, any forestry wastes or biomass straws, stalks, etc. Crushing machine is used for crushing the larger materials into smaller powder for supporting produce wood pellets. Wood crusher is ideal equipment for crushing raw materials like square logs with diameter less than 200mm; if the material has a diameter less than 50mm, then wood hammer mill is the best choice. The best thickness of the wood chip is less 5mm. After milled, the output size can reach diameter 3-5 mm,which is convenient for further processing to get dried and pelletized.

Biomass Material Drying and Pelletizing Process:

The best moisture content to pelletizing is about 11-17%. So before pelletizing, a drying machine is needed to make the moisture content reaches the required standards. Pellet mill is the significant part of the wood pellet production line, and has reliable and stable performance. Capacity ranges from 1T to 10T per hour. You can choose ring die pellet mill or flat die pellet mill depend on your capacity requirements.

Wood Pellet Cooling and Packing Process:

After pelletizing process, the temperature of wood pellets is between 60-80 degrees and the moisture content is close to 15%. So a cooler must be used to reduce their surface temperature and the moisture content which makes the wood pellets easy to store, meanwhile helps screen good and pure pellets. After the cooling process, packing process is necessary to protect the wood pellets from the damp. Amisy automatic wood pellet weighing & packing system adopts PLC control with high weighing accuracy and easy operation is your best choice.

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