Drying stage
From the start of ignition to the temperature of the furnace rising to 160 ° C, the moisture contained in the mechanism charcoal rod is mainly evaporated by the amount of external heating and the heat generated by the combustion itself. The chemical composition of the mechanism charcoal stick has hardly changed.
The initial stage of carbonization
At this stage, the heat of the rod itself is mainly generated to increase the furnace temperature of the carbonization furnace to between 160 and 280 °C. At this time, the wood material undergoes a thermal decomposition reaction, and its composition begins to change. Among them, the unstable composition, such as hemicellulose, decomposes to form CO2, CO and a small amount of acetic acid.
Comprehensive carbonization stage
The temperature at this stage is 300 to 650 °C.
At this stage, the wood material undergoes thermal decomposition abruptly, and a large number of liquid products such as acetic acid, methanol, and wood tar are produced. In addition, flammable gases such as methane and ethylene are produced, and these flammable gases can be burned through a valve control cycle. Thermal decomposition and gas combustion generate a large amount of heat, causing the furnace temperature to rise, and the wood material is dry-distilled to char at high temperatures.
In order to calcine high-temperature carbon, in addition to the above three stages, we need to increase the heat so that the temperature in the furnace continues to rise to about 800 ° C ~ 1000 ° C, so that the volatile substances remaining in the charcoal can be discharged and the charcoal can be raised. The carbon content of the carbon increases the graphite structure of the carbon and enhances the electrical conductivity.
Comprehensive Crusher | Multi-functional Crushing Equipment
Large comprehensive crushers are generally used to process a wide range of various large sized stray timber and more. This article describes how its superior performance and comprehensive applicability make it ideal for wood processing.
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.
Hydraulic&Mechanical Hookah Charcoal Briquetting Machine
Hookah charcoal briquetting machine uses high pressure to press charcoal powder into different shapes of charcoal briquettes. This article shows materials, product application, principle, specification and so on to take you to understand the three types of machines.
Honeycomb Coal Briquette Production Line | Charcoal Forming Machine
The honeycomb coal briquette production line crushes, mixes, shapes and carbonises raw materials such as wood or straw, and finally produces highly efficient and environmentally friendly honeycomb coal products to meet a wide range of energy needs.
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 Briquette Making Machine | Charcoal Briquette Extruder
The charcoal briquette machine can make all kinds of coal powder into different shapes of coal rods. This article lets you understand the machine more intuitively by showing the parameters, finished products and videos of the machine.