1 drying stage. The temperature at this stage is 120-150 degrees Celsius, and the pyrolysis rate is very slow. The main reason is that the moisture in the wood evaporates when it relies on externally supplied heat, and the chemical composition of the wood material hardly changes.
2 pre-carbonization stage. The temperature at this stage is 150-275 degrees Celsius, the pyrolysis reaction of wood materials is obvious, and the chemical composition of wood materials begins to change. The unstable combination components, such as semi-fibers, decompose to form carbon dioxide, carbon monoxide and a small amount of acetic acid.
3 carbonization stage. This temperature stage is 275-400 degrees Celsius. In this stage, the wood material is thermally decomposed rapidly, generating a large amount of decomposition products. The liquid product produced contains a large amount of acetic acid, alcohol and hibiscus oil, and the water content of the generated gas is gradually increased. The reduction, while methane, has been fading, and the gas is gradually getting more and more. This stage releases a large amount of heat of reaction, so it is also called the exothermic reaction stage.
4 calcination stage. The temperature rises to 450-500 degrees Celsius. At this stage, the charcoal is calcined by externally supplied heat, and the volatile matter remaining in the charcoal is discharged to increase the fixed carbon content of the charcoal. At this time, the liquid product is rarely formed.
5 carbonation stage. The temperature at this stage is 500-1200 degrees Celsius, and the key is this stage.
Continuous carbonizing furnace for charcoal making
The continuous carbonization furnace can make wooden materials like wood sawdust or peanut shell into charcoal. This equipment can continuously carbonize for 24 hours, realizing simultaneous feeding and discharging. It is the ideal equipment for the mass production of charcoal.
Wood Pellet Mill Machine | Biomass Pellet Making Machine
Wood pellet mill machine processes wood and other raw materials into high-density, high-fuel-value wood pellets, which can be widely used in the field of biomass energy.
Wood Hammer Mill Crusher | Large-yield Hammer Grinder
This wood hammer mill crusher ensures excellent pulverising results by quickly and finely grinding raw materials into uniform particles through a powerful hammer vane system.
Charcoal crusher | Coal crusher | Briquettes grinder
The industrial charcoal crusher was named coal crusher machine, coal briquettes grinder, etc. This commercial crusher machine is mainly used for crushing all kinds of charcoal or coal briquettes into small pieces and powder. With high efficiency for grinding charcoal and coal powder, this coal crusher is widely used in charcoal processing plants and various charcoal production lines.
High Capacity Drum Wood Chipper For Sale
Drum wood chipper is widely used in woodworking processing field by rotating knives to thin wood chips efficiently. This article takes you to understand the efficient performance in detail by showing its structure, function, parameters and video.
Continuous Airflow Drying Machine
The airflow dryer is mainly used to dry wood chips with a size of less than 5mm and reduce the moisture to 8-12% through the airflow pipe. The wood chip can be processed in the next step. The principle is that the hot gas is circulated through the pipe by burning the combustible material through the airflow, which is the raw material and the hot gas fully contact, thereby achieving the effect of the wood chip drying.