Carbonization is a very important process for making charcoal briquettes. The whole charcoal carbonizing process can be divided into the following three stages
1. Briquettes Drying Stage
From the ignition until the temperature reach 160℃, the biomass sticks moisture evaporates steadily mainly depends on the heating resource and independent burning value. There is no chemical changes in this stage.
2. Initial Carbonization Stage
This process mainly depends on the briquettes burning to produce heat and makes the temperature rise to 160~280℃. The biomass briquettes start to have thermal deposition. For example, the hemicellulose decompose into CO2, CO and amount of acetic acid.
3. Comprehensive Carbonizing Stage(temperature 300~650℃)
In this stage, the biomass material undertake chemical decomposition radically. It produces much acetic acid, carbinol and woo tar as well as combustible gas including methane and ethylene. These gas contributes to making a high temperature and the biomass briquettes are distilled into charcoal.
If you want to make pyrocarbon, the furnace temperature should reach 800℃~1000℃.

Azeus Provide Three Types of Carbonization Furnaces

self ignite furnace

self ignite furnace

airflow carbonization furnace

airflow carbonization furnace

airflow carbonization furnace

Three Types of Carbonization Furnaces

☆ Self-ignition Carbonization Furnace Features
This type charcoal carbonizing stove adopts self-ignition principle to decompose the briquettes into combustible gas, wood tar and charcoal. It can be applied to carbonize wood, logs, biomass briquettes, fruit shell and bamboo, etc. This charcoal carbonization machine is featured with easy operation, high efficiency, no smoke, etc. Made of mobile steel plates, this machine has large effective volume and long service time.

☆ Airflow Carbonization Stove Features
◇ Adopting advanced thermal current technology, this machine can greatly improve carbonizing rate from 80% to 99% .
◇ The furnace effective volume is 3m³, 5m³, 6m³, 8m³, every model can be customized.
◇ Carbonizing rate is more than 40-60%, yield of finished products is more than 95%.
Note: About hoist type hot airflow carbon furnace, we just provide three inner stove for free, if you want furnace continuous working, need buy additional inner stove. And mostly, because the shipping cost, our customer just ask our engineer send the drawing of inner stove to them, then they make it at their local.

carbonized briquettes

How to Choose Suitable Carbonization Stove
The carbonizing technology and carbonization furnace play an important role in the charcoal briquetting plant. Every one should consider how to choose the most cost-effective machine for your plant according to the budget, site condition and capacity. The following is comparison between steel plate carbonization furnace and carbonization kiln.

☆ Steel Plate Carbonization Advantages
1. Good sealed performance.
2. Long service life, usually more than 5 years.
3. High refractoriness. If the combustion chamber is made of insulating brick, its refractoriness can be 400~500℃; for furnace chamber made of high temperature castable, the refractoriness can be 1300℃ which can be used for making pyrocarbon.
4. Quick ignition and even air inlet, the furnace temperature is adjustable.
5. Equipped with wood tar separator, reducing environmental pollution.
6. Short carbonizing period.
More building cost than kiln and need extra transporting fees.
☆ Charcoal Carbonization Kiln Advantages: low investment and simple construction

1. Long time ignition time, needing to burning some briquettes.
2. Uneven air inlet. The briquettes cannot be carbonized completely.
3. Long processing time, 15-20 days.
4. Slow cooling, need cool water to help cool down the temperature.
5. No wood tar separator, making pollution.

Carbonization Furnace Technical Parameter

self-ignition Carbonization Furnace(Round)
2.15*2.15*9 m
self-ignition Carbonization Furnace(Square)
3*1.7*2.2 m
airflow Carbonization Furnace
3.4*1.8*2.3 m

Carbonization Furnace Working Video