Preparation method of pitch-based spherical activated carbon suitable for industrial production

Abstract

The invention belongs to the technical field of activated carbon preparation, and in particular relates to a preparation method of pitch-based spherical activated carbon suitable for industrial production. According to the preparation method, pitch and an aromatic hydrocarbon fluxing agent are taken according to a reasonable proportion and are fused at suitable temperature, and pitch spheres are prepared by a melt gas phase granulation method; the technology is simple and efficient, replaces an original melt liquid phase pelletizing method which is tremendously time-consuming and low in pelletizing rate, and is used to realize continuous industrial production at a pelletizing stage; the pelletizing yield exceeds 80% or above; the pitch-based spherical activated carbon reaches the requirements for the quality of foreign similar products after being treated by subsequent pre-oxidation, carbonization and activation.

Description

technical field

[0001] The invention belongs to the technical field of activated carbon preparation, and in particular relates to a preparation method of pitch-based spherical activated carbon suitable for industrial production. Background technique

[0002] Pitch-based spherical activated carbon is a top high-tech product in the activated carbon industry, and it is also an embargoed product abroad. In the 1990s, my country has completed the research and development of the laboratory stage, but has not yet achieved mass production on an industrial scale, because of the dependence on the laboratory technology path. The process route of asphalt spherical activated carbon is: according to the special formula to form a special modulated asphalt - pelletizing - pre-oxidation - carbonization - activation, the laboratory pelletizing method is to heat the asphalt and the medium liquid together until the asphalt melts, stirs and disperses, cools, and solidifies. Then filter out the ...