Novel hazardous waste combustion online coupling plasma melting integrated system

Abstract

The invention discloses a novel hazardous waste combustion online coupling plasma melting integrated system. A flue gas outlet of an integrated incineration melting device is connected with an inlet of a waste heat recovery device, an outlet of the waste heat recovery device is connected with an inlet of a quench tower, an outlet of the quench tower is connected with an inlet of a dry reactor, anoutlet of the dry reactor is connected with an inlet of a catalytic bag-type dust collector, an outlet of the catalytic bag-type dust collector is connected with an inlet of a wet-type deacidificationtower, an outlet of the wet-type deacidification tower is connected with an inlet of an induced draft fan, and an outlet of the induced draft fan is connected with a chimney. By means of the novel hazardous waste combustion online coupling plasma melting integrated system, high-temperature online melting of hazardous waste incineration bottom slag can be achieved, the rotary kiln incineration section bottom slag directly enters a melting section to be subjected to high-temperature treatment, and therefore the energy utilization efficiency is greatly improved; and meanwhile, rotary kiln flue gas and molten flue gas are collected, are subjected to secondary combustion and then enter a post-treatment system to be jointly purified, so that the overall operation cost is effectively reduced, and the defects in the prior art are avoided.

Description

technical field [0001] The invention relates to an integrated system of hazardous waste combustion, in particular to a novel integrated system of hazardous waste combustion online coupled with plasma melting, which belongs to the technical field of hazardous waste harmlessness and resource utilization. Background technique [0002] In recent years, with the rapid development of my country's chemical, metallurgical, pharmaceutical and other industries, the hazardous waste generated in the production process has increased sharply, resulting in increasingly prominent contradictions in the disposal of hazardous waste. The "National Hazardous Waste List" divides hazardous waste into 479 types of waste, a total of 46 categories. Hazardous waste is flammable, explosive, corrosive, infectious, etc., so proper disposal of hazardous waste is particularly important. [0003] For the hazardous waste treatment system, Chinese Patent Publication No. CN207831365U discloses a device for tre...

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Problems solved by technology

Patent CN107152684A (published date 2017.09.12) discloses a waste incineration method. This patent provides a waste incineration method. The focus is to solve the problems of incomplete decomposition, insufficient combustion, and substandard discharge of hazardous waste in the prior art. It proposes a two-step process. Incineration process, the combustion-supporting gas of 81%~89% of theoretical oxygen demand and 150%~180% of theoretical oxygen demand is fed step by step to ensure the complete combustion of hazardous waste; although the treatment of hazardous waste bottom slag mentions the use of melting equipment for treatment, it is not specific The feeding form of the bottom slag and the tail gas purification process are not elaborated

[0004] The existing technology adopts the high-energy-consuming process of cooling and remelting the bottom slag, and the high-temperature melting flow channel of the bottom slag is long, the temperature drop is large, and a separate tail gas purification system needs to be installed, resulting in high cost and complicated process

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