Three stages in environmental protection carbonization process

There are three stages in the process of environmental protection carbonization:

1、 Drying stage. From the ignition to the furnace temperature rising to 160 ℃, the water contained in the machine rod depends heavily on the external heating heat energy

Simple squareAnd the heat generated by self combustion. The chemical composition of the machine rod has not changed.

1、 Initial stage of carbonization. At this stage, it is important to rely on the burning of the rod itself to generate heat, so that the furnace temperature rises to 160-280 ℃

At that time, the wood material produced thermal analysis response, and its composition began to change. Unstable composition, such as hemicellulose production

0U2 generation and a small amount of acetic acid.

3、 Overall carbonization stage. The temperature at this stage is 300-650 ℃. In this stage, thermal analysis of wood materials is carried out rapidly, and a large number of liquid products such as acetic acid, methanol and wood tar are produced. In addition, methane, ethylene and other combustible gases are also produced for combustion in the furnace. Thermal analysis and wood burning produce a lot of heat, which increases the furnace temperature, and wood materials are carbonized at high temperatures.