Process for producing active carbon by cyclic utilization of high temperature flue gas

Abstract

The invention relates to a process for producing active carbon by cyclic utilization of high temperature flue gas. The process comprises that: high temperature mixing gas of a thermal insulation gas cabinet is introduced into a pure oxygen burner arranged in a carbonization activation furnace; a carbonization reaction is performed by controlling a temperature; the generated high temperature steam, the generated carbon dioxide, and a downflow carbonization material are subjected to an activation reaction through a downstream gas distributor, and active carbon after the activation reaction enters a cooling chamber, and then is discharged; high temperature flue gas discharged from a carbonization chamber and an activation chamber enters the pure oxygen burner again to be burned; and the generated high temperature steam and the generated carbon dioxide are adopted as mixing activation gas, the mixing activation gas and the downflow carbonization material are subjected to the activation reaction through the downstream gas distributor again, and the process is cyclically and continuously performed to prepare the active carbon. According to the process, the high temperature flue gas produced through carbonization and activation is adopted to cyclically produce the active carbon so as to save steam energy source, reduce cost, achieve continuous production, and effectively avoid environment pollution.

Description

technical field [0001] The invention relates to a method for producing activated carbon, in particular to a process for producing activated carbon while recycling high-temperature flue gas for carbonization and activation. Background technique [0002] Compared with wood and shell activated carbon, coal-based activated carbon is cheap, easy to regenerate, wear-resistant, and has low fluid resistance. Because activated carbon can be applied to air purification, microcrystalline industry, water treatment, solvent recovery and medicine and other fields. Therefore, in recent years, the demand for coal-based activated carbon in the domestic and foreign markets has been increasing year by year, and there is a large supply gap for high-quality products, especially in water treatment and environmental protection. The prospects are very broad. [0003] The main processes of traditional production of coal-based activated carbon are: raw material preparation process, extrusion molding...

AI Technical Summary

Problems solved by technology

In the production process, due to the need to burn a large amount of raw coal, a large amount of harmful gases and dust such as sulfur dioxide and nitrogen oxides are emitted, causing serious environmental pollution and a serious waste of resources.

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