Activated carbon boasts a well-developed pore structure and a large specific surface area, with excellent adsorption properties. It has a strong adsorption capability for organic and inorganic substances in gases and solutions, as well as colloidal particles. It finds wide applications in various fields such as the food industry, sugar production, chemical industry, environmental protection, and wastewater, solvent purification, fuel gas storage, gas separation, and catalytic reactions. The raw materials for preparing activated carbon include various biomass carbon powders, anthracite, coke, lignite, petroleum coke, synthetic fibers, and waste plastics.
The common method for preparing shaped activated carbon is the extrusion molding method, which requires first activating the carbon precursor into porous carbon, then adding binder for extrusion molding, and finally undergoing a secondary activation process. Due to the lengthy secondary activation required, this method not only involves a significant investment and long construction period, but also results in a time-consuming and costly preparation process. The new technology for preparing shaped activated carbon efficiently and inexpensively does not require secondary activation and can produce high-performance, multi-purpose activated carbon through a quick process. Compared to existing technology, it offers significant advantages: first, the equipment investment can be reduced by about 50-60%. Second, the specific surface area can generally reach 600-1200 square meters per gram, and it can be recycled for reuse after failure. Third, it is suitable for fuel gas storage, gas separation, and the treatment of various wastewater and solvents.
