Carbonization Process Of Horizontal Carbonization Furnace
Jun 11, 2022
Carbonization process of horizontal carbonization furnace
The carbonization process of the carbonization furnace can generally be divided into the following three temperature sections:
1. Drying stage
From the start of ignition, until the furnace temperature rises to 160 ° C, the moisture contained in the machine rod is evaporated mainly by the external heat and the heat generated by its own combustion. The chemical composition of the mechanical rods has hardly changed.
Second, the initial stage of carbonization.
This stage mainly relies on the combustion of the rod itself to generate heat, so that the furnace temperature rises 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, unstable components, such as hemicellulose, are decomposed to generate CO2, CO and a small amount of acetic acid.
3. Comprehensive carbonization stage
The temperature at this stage is 300 to 650°C.
During this stage, the wood material undergoes rapid thermal decomposition, and a large amount 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 are burned in the furnace. 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 temperature.
