Introduction to basic knowledge of Activated Carbons

Activated Carbons is a traditional and modern man-made material, also known as carbon molecular sieve. Since its inception, the application fields of Activated Carbons and honeycomb activated carbon have been expanding, and the number of applications has continued to increase. Due to the different sources of raw materials, manufacturing methods, appearance shapes and applications, there are many types of activated carbon, about thousands of varieties.

Activated carbon classification method: classification by material, shape, and purpose.

Activated carbon is classified by material

1. Coconut shell charcoal

Coconut shell activated carbon is made of high-quality coconut shells from Hainan, Southeast Asia and other places. The raw materials are screened, refined by steam carbonization, and then processed through a series of processes such as impurity removal and activation screening. Coconut shell activated carbon is black granular, with developed pore structure, high adsorption capacity, high strength, stable chemical properties, and durability.

2. Nutshell charcoal

Nutshell activated carbon is mainly made of nutshell and sawdust as raw materials, through carbonization, activation, and refined processing. It has the characteristics of large specific surface area, high strength, uniform particle size, developed pore structure, and strong adsorption performance. And can effectively absorb free chlorine, phenol, sulfur, oil, gum, pesticide residues and other organic pollution in the water, as well as the recovery of organic solvents. It is suitable for the decolorization, refining, purification and sewage treatment of organic solvents in the pharmaceutical, petrochemical, sugar, beverage, and alcohol purification industries. Nutshell activated carbon is widely used in the deep purification of drinking water, industrial water and wastewater, and the purification of industrial water.

3. Wood charcoal

Wood charcoal is made of high-quality wood as raw material, in powder form, refined by high-temperature carbonization, activation and various processes to make wooden activated carbon. It has a large specific surface area, high activity, developed micropores, strong decolorization power, and large pore structure, etc. Features, large pore structure, can effectively absorb the color and other large substances and impurities in the liquid.

4. Columnar carbon

Columnar charcoal is made from high-quality wood chips, charcoal, etc., which are crushed, mixed, extruded, formed, dried, carbonized, and activated. Compared with traditional coal-based columnar activated carbon, the columnar activated carbon has lower ash content, less impurities, reasonable pore size distribution, and good adsorption and desorption, which greatly improves the service life of the product (average 2-3 years). It is the same as that of ordinary coal-based carbon. 1.4 times.

5. Coal-based charcoal

Coal-based carbon is refined from high-quality anthracite coal as raw materials. The shapes are columnar, granular, powder, honeycomb, spherical and other shapes. It has the characteristics of high strength, fast adsorption speed, high adsorption capacity, large specific surface area, and developed pore structure. . The pore size is between coconut shell activated carbon and wood activated carbon. Mainly used for air purification, exhaust gas purification, high-purity water treatment, wastewater treatment, sewage treatment, etc.