Wood Chip Carbonization Solutions
Raw Material Type: Wood shavings, coconut shells, rice husks, fruit shells
Design Capacity: Configured according to customer requirements
Equipment: Continuous Carbonization Furnace
Introduction
The carbonization of agricultural and forestry waste such as sawdust, coconut shells, rice husks, and various fruit shells represents a crucial pathway for efficient resource conversion. These raw materials undergo high-temperature pyrolysis in a sealed, oxygen-deprived environment within carbonization furnaces, transforming into biomass charcoal with distinct properties:
Sawdust Charcoal: Produced from sawdust and wood chips via continuous carbonization furnaces. It can be formed into charcoal briquettes of different shapes and densities using various molding machines.
Coconut Shell Charcoal: Directly carbonized from coconut shells. Coconut shell charcoal is hard, highly porous, and low in ash content, making it an excellent raw material for activated carbon. It is widely used in water purification, air treatment, and precious metal recovery.
Rice Husk Charcoal: Produced by carbonizing rice husks. Rich in silicon and lightweight with high porosity, rice husk charcoal has a relatively low calorific value but excels as a soil conditioner in agriculture, improving soil permeability and regulating pH levels.
Nut Shell Charcoal: Produced by carbonizing nut shells such as walnut shells, apricot pits, olive pits, coffee husks, and macadamia nut shells. Characterized by high hardness and large specific surface area, it combines fuel value with adsorption properties. Suitable for industrial decolorization, deodorization, and manufacturing premium barbecue charcoal.
Manto, as a professional supplier of charcoal production solutions, can provide each customer with a complete set of charcoal production equipment and comprehensive technical support.
Wood Chip Carbonization Production Process
The continuous carbonization furnace achieves 24-hour uninterrupted carbonization production of various granular raw materials through automated feeding and discharging systems. Its standard process flow is as follows:
Stage 1: Raw Material Pretreatment
Wood chips: Must first undergo drying treatment to reduce moisture content below 15%, ensuring flowability and carbonization efficiency.
Coconut/fruit shells: Crush into uniform 2-5cm chunks, removing impurities and metallic contaminants.
Rice husks: Due to their light weight and good flowability, they can be fed directly but require moisture content control.
Stage 2: Continuous Feeding
Pre-treated materials are uniformly and quantitatively fed into the carbonization furnace inlet via enclosed screw conveyors or elevators. Feeding speed is automatically adjusted based on material properties and carbonization temperature to maintain stable furnace material levels.
Stage 3: High-Temperature Carbonization
Materials slowly advance through the furnace body (driven by furnace rotation), sequentially passing through three temperature zones:
Drying Zone (150°C–300°C): Residual moisture evaporates under heat.
Pyrolysis Zone (300°C–650°C): Material decomposes under oxygen-deprived conditions, releasing wood vinegar, wood tar, and combustible gases while converting into charcoal.
Cooling Zone (natural cooling or water-cooled jacket): Fully carbonized material gradually cools before discharge to prevent spontaneous combustion.
Stage 4: Flue Gas Purification and Reuse
Combustible flue gas generated during carbonization is extracted via ductwork into a cyclone dust collector and spray condensation system. Wood vinegar and wood tar are separated for recovery; Purified combustible gases (primarily CO, CH₄, etc.) are conveyed to the combustion chamber for burning, providing heat to the furnace and achieving energy self-sufficiency.
Stage 5: Cooling and Discharge
Once the temperature of the fully carbonized material drops below 50°C, it is continuously discharged through a sealed discharge machine. The entire discharge process is fully enclosed to prevent external air from entering the furnace and causing combustion.
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