Activated carbon is an excellent adsorbent, it has well developed pore structure, large specific surface, high adsorption capacity, high hardness, good stability, it has wide applications in many fields such as chemical industry, light industry, pharmaceutic industry, environmental protection, food industry and military industry. It can be used as catalyst or catalyst carrier, and for gas separation and purification, organic solvent recovery, desulfurization of gas or flue gas, waste water treatment, drinking water purification decolorization, odor and taste removal, as well as purification and refinement, noble metal extraction, etc.