Small smokeless charcoal machine

The quality of machine-made charcoal produced by small smokeless charcoal making machine equipment is related to the sales volume and economic benefits of the manufacturer. Each charcoal making machine manufacturer cares about the quality of machine-made charcoal, but in actual operation, the finished product The quality of charcoal will be affected by various factors, the main ones are the influence of process and raw materials. What is the quality of the finished carbon of the specific small smokeless charcoal making machine?

1. Charcoal is a water-increasing substance, and the water content during normal storage is generally below 7%. The degree of moisture absorption is affected by the relative humidity in the air and the degree of oxidation of the surface of the charcoal. The water absorption capacity of charcoal when it comes into contact with water depends on its structural characteristics and surface infiltration, and it can absorb moisture beyond its own weight.

2. The content and composition of ash are affected by the type of wood, carbonization process, and harvesting and transportation. The content is generally within 6%.

3. When charcoal is heated above the pyrolysis temperature, volatile gases are decomposed. The carbon remaining after a few minutes of calcination at a high temperature (850 ° C to 950 ° C) is called fixed carbon, and when it is used under high-temperature conditions, it is no longer volatilized and can participate in the reaction. It is the main ingredient in charcoal.

4. The true specific gravity of charcoal is mainly related to the calcination temperature, and has little relationship with tree species, generally between 1.3 and 1.4; the apparent specific gravity is generally between 0.2 and 0.5, which varies not only by tree species but also by porosity. Generally, the pores of charcoal account for more than 7% of the volume of charcoal and are affected by tree species, growth sites, and carbonization processes.

5. The specific heat capacity of charcoal production machine charcoal depends on the heating temperature and the quality of charcoal and increases with the increase of temperature. The calorific value depends on the carbonization conditions, generally around 33.5 MJ. The higher the carbonization temperature, the greater the heat generation.

7. Since all aspects of wood structure are different due to heat shrinkage, charcoal will cause cracks and affect the strength. The compressive strength of charcoal along the longitudinal direction of the fiber is close to or even reaches the strength of coke, while the compressive strength along the transverse direction of the fiber is only 1/4 to l/6 of coke. In addition, the low wear strength of charcoal also affects its use.

8. The specific resistance of charcoal is quite large, about 1010 to 1012 Ω·cm. The direction of the fiber is only 1/3 to 1/5 of the vertical direction.

9. A large number of micropores and transition pores present in charcoal make it not only have a high specific surface area, but also have good adsorption properties after the tar substance in the pores is removed, so it is an important raw material for the preparation of activated carbon.