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Activated carbon is a kind of microcrystalline carbon material made of carbon-containing materials with black appearance, developed internal pore structure, large surface area and strong adsorption capacity. It is a commonly used adsorbent, catalyst or catalyst carrier, widely used in almost all sectors of the national economy and People's Daily life.

Activated carbon classification - There are no less than thousands of activated carbon varieties due to different raw material sources, manufacturing methods, appearance shapes and application occasions.

According to the source of raw materials, it can be divided into wooden activated carbon (such as coconut shell activated carbon, apricot shell activated carbon, wood powder charcoal, etc.), mineral raw material activated carbon (various coal and petroleum and its processing products are made of raw materials), and activated carbon made of other raw materials (such as activated carbon made of waste rubber, waste plastic, etc.).

According to the manufacturing method, it can be divided into chemical activated carbon (chemical carbon)

The method of preparing activated carbon by heat treatment after mixing carbon-containing raw materials with certain chemicals is called chemical method. Activated carbon produced by chemical process is also known as chemical activated carbon or chemical carbon.

Chemicals that can be used as chemical methods are also called activators, activators are zinc chloride, calcium chloride, potassium carbonate, phosphoric acid, potassium dihydrogen phosphate, potassium sulfide, sulfuric acid, potassium hydroxide, sodium hydroxide, boric acid, etc. In short, many acids, bases, salts can be used as activators, mainly from the performance and economy of activated carbon to consider what kind of activator.

In general, the secondary micropores and mesoporous pores (that is, pores with pore diameter or pores wider than 1.5 nanometers) of chemical carbon are more developed, mainly used for liquid phase adsorption refining and solvent recovery gas phase (vapor) adsorption occasions.

Chemical manufacturing of activated carbon due to the addition of chemicals in the manufacturing process should pay great attention to environmental protection and the impact of trace elements brought into the product may exist.