Charcoal Carbonization Furnace

Zhengzhou Fanda Machinery Co., Ltd. is one of the leading manufacturers and suppliers of charcoal carbonization furnace in China. With abundant experience, we warmly welcome you to buy cheap charcoal carbonization furnace for sale here from our factory. For price consultation, contact us.

 

Introduction to the charcoal carbonization furnace:

The carbonization process in the carbonization furnace can generally be divided into the following three temperature sections:

 

Drying stage:

From ignition until the furnace temperature reaches 160 °C, the moisture in the machine rod evaporates mainly by external heat and heat generated by its own combustion. The chemical composition of the mechanical rods has hardly changed.

 

The initial stage of carbonization:

This stage mainly relies on the rod's combustion to generate heat, so the furnace temperature rises to 160-280 °C. At this point, the wood undergoes thermal decomposition, and its composition begins to change. Unstable components such as hemicellulose decompose, generating CO2, CO, and a small amount of acetic acid.

 

Carbonization stage:

The temperature at this stage is 300 to 650°C.

 

During this stage, the wood undergoes rapid thermal decomposition, producing large amounts of liquid products such as acetic acid, methanol, and wood tar. The process also produces flammable gases such as methane and ethylene, which the furnace burns. Thermal decomposition and gas combustion generate a large amount of heat, which increases the furnace temperature, and the wood material is dry-distilled into charcoal at high temperatures.

 

To calcine high-temperature charcoal, in addition to the three stages above, we also need to increase the heat. Hence, the furnace temperature continues to rise to about 800 °C-1000 °C, allowing the remaining volatile substances in the charcoal to be discharged and increasing the charcoal content. Increasing the carbon content improves the graphite structure and enhances conductivity.

 

Carbonization is an important part of making charcoal. Carbonization is central to machine-made charcoal production. It's like building a building. Good materials are the foundation underground. Carbonization technology is the above-ground part of the building. Carbonization has three stages: low-temperature exhaust, high-temperature calcination, and cooling. When the slurry rod enters the carbonization furnace, it has about 8% moisture, which is the enemy of carbonization. Because the slurry rod mechanism is highly sensitive to moisture, moisture in the slurry rod can seriously affect carbonization quality. Sometimes, draining the tide is essential.

 Drying time is essential. The moisture removal time is generally 10-15 hours for earth kilns and 2-3.5 hours for machine-made kilns. Long heating times can keep the rods from drying out and cracking, improving carbonization quality. When the furnace temperature rises to 300 degrees, it can produce a large amount of combustible gas. It is reasonable to say that three cubic meters of methane gas can be produced per kilogram of raw materials. These gases are used to heat the furnace. The discharge can be used as a heat source for drying above 400 degrees. The anaerobic closed fire must be sealed during the heat preservation and calcination stage. This can be done by preventing spontaneous combustion or by water cooling. After the charcoal leaves the kiln, ventilate it before discharging to prevent carbon dioxide poisoning. Place the charcoal coming out of the kiln outdoors for more than 8 hours. This prevents ash resurgence and resulting fires.

Technical parameters of charcoal carbonization furnace for making wood charcoal:

Model	Dimension(Meter)	Capacity	Weight
THW200	1.5*1.15*1.6	150-200kg	370kg
THW300	1.7*1.3*1.8米	200-300kg	530kg
THW400	1.7*1.5*2米	300-400kg	750kg
THW500	1.7*1.7*2.2米	400-500kg	1000kg
THW700	2.2*1.8*2.2米	600-700kg	1500kg
THW2000	4.6*1.8*2.3米	1500-2000kg	3600kg
THW3000	4.6*2.2*2.5米	2500-3000kg	4500kg

The features of the charcoal carbonization furnace  for making wood charcoal:
1. A carbonization furnace uses a horizontal manufacturing process. The carbonization furnace has a three-layer structure, and the light insulation material in the middle helps maintain the furnace temperature at all times.
2. The door uses a packing seal, not an air seal, so the carbon yield in the conventional carbonization furnace is much higher.
3. It is called a green carbonization furnace because the stick in the carbonization process will produce a lot of light yellow combustible gas. These gases can be diverted through the carbonization furnace's pipes to the charring furnace combustion zone for secondary heating-more environmentally friendly and fuel-saving.
4. Excess gas from the carbonization furnace can be used to dry the sawdust or to burn the boiler.
5. In the carbonization furnace, to shorten the charcoal cooling time, we use the interlayer gap between the unit water-cooling carbonization furnace for natural cooling, which is more efficient and convenient.
Carbonization furnaces can be customized according to customer requirements. (Materials and working process).

 

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