Wood decomposes at high temperatures into three substances: solid carbon, liquid and gaseous. This is often called: pyrolysis of wood. On the pyrolysis of its wood pyrolysis temperature plays a crucial role. Pyrolysis temperature is the key point of wood heating decomposition. It directly affects the carbonisation effect. Therefore, the pyrolysis of wood has a close relationship with the nature, quantity, quality and distribution of raw materials. Wood pyrolysis often used equipment for: Wood Charcoal Carbonisation Furnace. Organic substances are pyrolysed at high temperatures, under oxygen-poor and oxygen-free conditions. The organic matter is decomposed into carbon and volatile gases. For example: methane, ethylene, tar and so on.
Wood Charcoal Carbonisation Furnace pyrolysis temperature:
1. Raw material drying: dry the wood raw material until the moisture content is less than 12%. Remove free moisture from the raw material.
2. Raw material preheating: Heat the wood raw material to between 200℃~250℃, so as to evaporate the remaining water in the raw material. This will evaporate the remaining moisture in the raw material and promote the thermal decomposition of organic matter.
3. wood pyrolysis: further heating of the raw material to: 350 ℃ ~ 600 ℃. It should be noted that the pyrolysis must be carried out under oxygen-poor and oxygen-free conditions. This leads to the decomposition of lignin and cellulose into carbon.
4. Material Cooling: After pyrolysis, the finished carbon is cooled to room temperature by a cooler. After pyrolysis, the finished carbon is cooled down to room temperature by a cooler. This prevents spontaneous combustion. After cooling it is collected in tonne packs.
According to different carbide materials, the pyrolysis temperature and time of Wood Charcoal Carbonisation Furnace are also very different:
1. Biomass carbon: The pyrolysis temperature is controlled at: 450~600℃. Its specific area is large. High porosity.
2. Charcoal: Carbonised wood at 350~450℃. Small specific surface area. High density.
3. Activated carbon: wood carbonised at 700~900℃. It is chemically treated to give it a very high specific surface area and adsorption capacity.
Pyrolysis is the key process to convert wood into useful products. Control of pyrolysis conditions is required. Carbons with different properties and uses can be produced. It can be applied in a wide range of industry sectors. Pyrolysis plays a vital role in modern society.
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