Working principle of the whole production line of charcoal making machine equipment

The complete equipment of charcoal making machine is generally divided into four processes: crushing equipment, drying equipment, charcoal molding equipment, and carbonization equipment. It is also the basic equipment for making charcoal. The working principle of the whole production line is also based on the four machines. Shuliy mechanical charcoal making machine manufacturers are tireless to tell the user.

        First of all, the working principle of the pulverizing equipment is to pulverize the material into fine particles of 3 mm or less by utilizing the inertia and centrifugal force generated by the rapid rotation of the blade.

        Second, it depends on the size of the moisture contained in the raw material. The moisture content of the raw materials is generally required to be less than 12%, but also greater than 6%. When drying raw materials, we can first dry the raw materials with large moisture content in the open air drying field for 1~2 days, and let the surface water evaporate to reduce the heat drying time and fuel consumption. Then, we put the full-size raw materials into a hot air dryer to dry material with a water content of less than 12%. The drying temperature is generally about 160~250 °C.

        Again, the raw material rod is completed in a molding machine (or a bar machine). The forming cylinder of the molding machine has a heating ring outside, which can raise the temperature of the forming cylinder to about 350. In order to ensure the density of the charcoal stick is large, the surface is smooth, and there is no obvious crack. We can choose the right molding temperature according to the type of raw materials and moisture content. Its level must be determined through field tests. Generally speaking, if we assume that the auger is qualified and the water content of the raw material is between 6 and 12%, we can control the final temperature of the sawdust, wood sawdust, wood flour, and bamboo raw materials to 260~ Between 320 ° C.

        Finally, the final semi-finished product that is formed from the raw material is charcoal, then we should burn or calcinate the salary bar through the earth kiln to become qualified charcoal. The carbonization process of medium and low-temperature carbon can generally be divided into the following three temperature segments.

Article for charcoal making machine here

1. Drying stage

        From the start of ignition to the temperature of the furnace rising to 160 ° C, the moisture contained in the salary bar is mainly based on the amount of external heating and the heat generated by the combustion of its own fuel bar. The chemical composition of the salary bar has hardly changed.

2. The initial stage of carbonization

        At this stage, the heat is generated by the burning of the salary bar itself, so that the temperature of the furnace 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, the unstable composition, such as hemicellulose, decomposes to form CO2, CO and a small amount of acetic acid.

3. Comprehensive carbonization stage

        The temperature at this stage is 280 to 400 ° C. During this stage, the wood material undergoes thermal decomposition rapidly, and a large number of liquid products such as acetic acid, methanol, and wood tar are formed. 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 produce a large amount of heat, which causes the furnace temperature to rise. The wood material is dry distilled to char at high temperatures.