Biomass Carbonization Process

Carbonization is one of the important processes in the production of activated carbon. It usually includes two parts: raw material carbonization and exhaust gas treatment.

Raw material carbonization is mainly carried out in a Carbonization Furnace. After the material enters the feed bin through the feeding port, it is fed into the carbonization furnace by the screw feeder. Depending on the inclination and rotation of the furnace body, the material moves slowly from the feeding port to the discharging port, gradually passing through the drying zone, the pyrolysis zone, and the carbonization zone. In this process, the carbonization furnace heats the material through thermal radiation so that the material is decomposed at high temperature to discharge non-carbon substances such as oxygen and hydrogen, and form fixed carbon with a skeleton structure and a certain strength to the greatest extent.

The tail gas produced in the carbonization process is mainly composed of two parts: the high-temperature gas produced by fuel combustion and the volatile gas produced by the material thermal decomposition. They all contain a small number of harmful substances, which will cause certain pollution, so they need to be treated before they can be directly discharged into the atmosphere. Under normal circumstances, the tail gas will be sent into an incinerator, fully combusted at a high temperature of 900-1100 ℃ until all combustible gases and harmful substances are burned into CO2, and then discharged into the atmosphere.