The hazelnut shell charcoal machine adopts the principle of retort carbonization, which is a reaction process of heating and decomposition under air isolation conditions. Retorting hazelnut shells produces various gases, steam and solid carbon at the same time. The gas is fed into the bottom of the furnace through the smoke return pipe for self-heating. During the carbonization process of hazelnut shells, wood tar, wood acetic acid, etc. can be obtained, which can be collected and utilized. The smoke produced during carbonization can also be recycled and eventually made into charcoal.

The hazelnut shell charcoal machine can also load raw materials such as wood, bamboo tubes, branches, and fruit trees into the furnace, and then heat and ignite the carbonized raw materials inside the furnace through the ignition port. The generated flue gas will be filtered and dusted by the flue gas purification system. , the combustible flue gas is transmitted through the pipeline into the bottom fire channel of the Runhe carbonization furnace for combustion to achieve the purpose of secondary heating and temperature rise, so that after the raw materials in the furnace reach the temperature, they are burned inside the furnace for cracking and carbonization to form charcoal.

The principle of the hazelnut shell carbonization furnace is to use the flue gas generated by the internal combustion material for secondary heating and calcination. The flue gas returns to the bottom for heating. During the charcoal making process, the thermal energy of the wax finger burning bomb is recycled. It achieves the effects of smoke cleaning, circulation and fuel saving. At the same time, it can also collect acetic acid, tar and gas generated by the material during the carbonization process.