Regenerated activated carbon and preparation method thereof

Abstract

The invention belongs to the technical field of activated carbon preparation, and provides regenerated activated carbon and a preparation method thereof, wherein the regenerated activated carbon is prepared by mixing a binder, a pore-forming agent, a surfactant and activated carbon particles. The metal oxide contained in the regenerated activated carbon can react with water vapor in the preparation process of the activated carbon to generate alkaline substances, the alkaline substances serve as catalysts, the activation reaction speed of carbon particles can be increased, the time of the activation stage is shortened, formation of activated carbon pores can be promoted, and the number of the activated carbon pores is increased. The metal ions can also increase functional groups on the surface of the activated carbon, and the surfactant is added, so that the mechanical strength of coal columnar carbon is improved, the ash content is reduced, and the adsorption capacity is increased.

Description

technical field [0001] The invention belongs to the technical field of activated carbon preparation, and in particular relates to a regenerated activated carbon and a preparation method thereof. Background technique [0002] Activated carbon is considered to be an efficient adsorption material because of its well-developed pore structure, low toxicity, large specific surface area, and good stability. It has a wide range of applications in environmental protection, medicine, chemical industry, gold extraction, nanomaterials, high-efficiency catalysts and other fields. However, the use cost of the waste activated carbon after adsorption is high. If the activated carbon that reaches the adsorption saturation is discarded without treatment, it will not only greatly limit the application range of activated carbon, but also cause waste of resources and secondary pollution. . Therefore, the development of regeneration technology for adsorption saturated activated carbon has impor...

AI Technical Summary

Problems solved by technology

Among them, the thermal regeneration method has become the most widely used regeneration method due to its advantages of high efficiency, uniform heating, thorough regeneration, and simple operation. The pore structure and adsorption performance of activated carbon will be greatly reduced after regeneration

[0004] At present, activated carbon is basically made of wood, coal, or petroleum semi-finished products, which consumes a lot of cost and the preparation process is complicated, which is not conducive to sustainable development of the environment.