System and method for treating hazardous wastes on the basis of plasma smelting furnace

Abstract

The invention discloses a system for treating hazardous wastes on the basis of a plasma smelting furnace. The system comprises a pretreatment system, a pyrolysis fusion system and a smoke treatment system, wherein the pyrolysis fusion system comprises a plasma fusion furnace; the smoke treatment system successively comprises a secondary combustion chamber, a gravity settling chamber, a quench tower, an SCR (Selective Catalytic Reduction) system, a bag-type dust collector, an activated carbon adsorption tower, an alkali washing tower and a smoke discharging chimney. The system with the technical scheme is characterized in that a smoke tail gas stage treatment way is used for purifying smoke tail gas and realizing a purpose that stubborn hazardous wastes are thoroughly removed. When the system works, each equipment pipeline does not exchange air with outside, the smoke tail gas in equipment does not cause secondary pollution on external air, the smoke tail gas is treated according to stages and steps in smoke tail gas treatment, pollutants in the smoke tail gas are thoroughly treated, and secondary pollution on the environment due to the stubborn hazardous wastes and the smoke tail gas is avoided.

Description

technical field [0001] The invention belongs to the field of hazardous waste treatment and environmental protection, and more specifically relates to a fully enclosed and more thorough hazardous waste melting pyrolysis and flue gas tail gas purification system and treatment method based on a plasma melting furnace for treating hazardous waste. Background technique [0002] At present, the stubborn hazardous waste from industrial production and special industries, and medical hazardous waste from hospitals are increasing day by day, which is the most difficult part of environmental governance and protection. These hazardous wastes seriously affect people's living environment and quality of life, and it is urgent to develop a A thorough hazardous waste treatment system. In the prior art, with the development of plasma technology and its continuous application in industries such as metallurgy, casting, processing and manufacturing, and surface treatment, it is also common to ap...

AI Technical Summary

Problems solved by technology

However, in the prior art, there is not yet a complete system that can realize the classification and thorough purification of flue gas tail gas after melting and pyrolyzing various hazardous wastes by using plasma technology. In this system, the flue gas tail gas can be completely purified. Purification, fully combustible combustible gas that is not fully burned, collects stubborn hazardous waste that is not easy to melt and pyrolyze for multiple times, and melts and pyrolyzes it multiple times to make full use of the heat in the flue gas tail gas

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