Innocent treatment equipment and method for naphthalene-bearing hazardous wastes

Abstract

The invention discloses innocent treatment equipment and method for naphthalene-bearing hazardous wastes. The equipment comprises a crushing system, an air delivery system and a combustion system. A sinterer ignition furnace of the combustion system comprises a flame nozzle (1), refractory bricks (2), an observation window (3) and a hearth (11). The air delivery system is connected with the combustion system through a high temperature resistant nozzle (10). The crushing system is connected with the air delivery system. An inlet of a feed bin (5) is connected with a roll crushing mill (4). An outlet of the feed bin (5) is connected with an air-particle mixing bin (6) through a feed inlet valve (8). An entry end of the air-particle mixing bin (6) is connected with an air compressor (7) through an air inlet valve (9), and an exit end of the air-particle mixing bin is connected with a high temperature resistant nozzle (10). After mixed with air through the air delivery system, naphthalene-bearing hazardous waste particles are ejected into the sinterer ignition furnace of the combustion system and boil-combusted under the action of high-temperature environment more than 900 DEG C. Air-particle mixing ratio is regulated by regulating the feed inlet valve (8) and the air inlet valve (9).

Description

technical field [0001] The invention relates to a method and device for harmless treatment of naphthalene-containing hazardous waste, belonging to the technical field of hazardous waste treatment and disposal. Background technique [0002] Hazardous waste containing naphthalene (hereinafter referred to as hazardous waste containing naphthalene) comes from the coking process of the iron and steel industry. According to the "National Hazardous Waste List", this substance belongs to the hazardous waste of rectification (distillation) residue (HW11), and is one of the main hazardous wastes in the steel industry. Industrial analysis shows that the volatile content of naphthalene-containing hazardous waste is greater than 95%, and the calorific value is greater than 30,000kJ / kg. It is extremely flammable and the heat released after combustion has great utilization value. However, this substance is easy to sublimate and has strong toxicity. If it is not disposed of in time and eff...

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Problems solved by technology

[0005] Technical problem: The purpose of this invention is to propose a method for the harmless treatment of hazardous waste containing naphthalene, which uses the method of crushing the hazardous waste containing naphthalene to form a particle flow and spraying it into the ignition furnace of the sintering machine to make it boil and burn to solve the problem of waste containing naphthalene. The problem of sublimation of hazardous naphthalene waste during combustion, and a device for the harmless treatment of hazardous waste containing naphthalene is designed. After the hazardous waste containing naphthalene is crushed, it is mixed with air and sprayed into the ignition furnace of the sintering machine to realize the safe and efficient treatment of hazardous waste containing naphthalene. Clean and efficient handling

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