Biomass gasification residue formed activated carbon and preparation method thereof

Abstract

The invention discloses biomass gasification residue formed activated carbon and a preparation method thereof. The preparation method comprises the following steps: uniformly mixing a raw material with a high-temperature adhesive, activation aids and a normal-temperature adhesive, carrying out extrusion molding in a molding machine, carrying out drying hardening, and carbonizing and activating ina high-temperature furnace, thereby obtaining a finished product of activation carbon, wherein biomass gasification residue carbon powder is used as the raw material. After the normal-temperature adhesive is mixed with the carbon powder and the high-temperature adhesive, a molding function is achieved, and convenience can be brought to extrusion molding or shaping of the raw material; in the high-temperature carbonization and activation process, the normal-temperature adhesive is burnt to generate pores, and the high-temperature adhesive is heated and molten to achieve an adhesion effect at the moment; due to addition of the activation aids, the reaction activity of gasification residues can be improved; the strength of the activated carbon is up to 99%, the iodine sorption value of the activated carbon is up to 900 mg / g, and the methylene blue adsorption value of the activated carbon is up to 180 mg / g.

Description

technical field [0001] The invention belongs to the technical field of preparing high-strength shaped activated carbon from waste resources. Specifically, it uses biomass gasification residues as raw materials, uses room temperature binders and high-temperature binders to shape, and prepares high-strength shaped activated carbon through physical activation. method. Background technique [0002] Biomass resources are the only renewable carbon resources. Biomass gasification is a thermochemical reaction that converts a part of the combustible components in biomass fuel into combustible gas under high temperature conditions. The combustible gas generated during the gasification process can be used for power supply. gas, heating, power generation and synthetic chemicals. At present, more than 500 biomass gasification application projects have been established in my country, and a large amount of gasification residues are generated every year. Before being utilized, they are oft...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved: the present invention aims at the problems that the current biomass residues cannot be fully utilized, the activated carbon products prepared by the existing conventional activated carbon molding method have poor molding strength, and are not resistant to high temperature, etc. The characteristics such as poor binding force of the agent, discloses a biomass gasification residue shaped activated carbon and its preparation method. It solves the problems of low strength of shaped activated carbon, low reactivity of residual carbon powder after high temperature gasification, and difficulty in activation.

Images