Hazardous waste incineration system and process

Abstract

The invention discloses a hazardous waste incineration system and process. The hazardous waste incineration system comprises feeding systems, an incineration device and a tail gas treatment system, wherein the feeding systems comprise a bulk material feeding system, a bagged material feeding system and a liquid material feeding system which convey bulk hazardous waste, bagged hazardous waste and liquid hazardous waste to the incineration device continuously and airtightly respectively. With adoption of the hazardous waste incineration system and process, through heat value and chemical compatibility of various types of hazardous waste, process parameters of the incineration device are controlled accurately, safe, stable and efficient operation of the incineration system is guaranteed, the hazardous waste is thoroughly incinerated, and tail gas and slag are treated efficiently without pollution.

Description

technical field [0001] The present invention generally relates to the field of hazardous waste incineration treatment, and more specifically relates to a hazardous waste incineration system and process. Background technique [0002] Hazardous waste (hazardous waste) refers to waste with one or more hazardous characteristics such as corrosiveness, toxicity, flammability, reactivity or infectivity. With the development of industry, the amount of hazardous waste discharged in the industrial production process is increasing, and how to deal with it safely and efficiently is of great significance to environmental safety. [0003] In the existing hazardous waste incineration treatment system, various forms of hazardous waste are usually mixed together and temporarily stored in the pit, and the waste is lifted into the kiln by a grab bucket. This way of entering the kiln leads to a large amount of air leakage at the kiln head, resulting in a series of problems such as uncontrollab...

AI Technical Summary

Problems solved by technology

This way of entering the kiln leads to a large amount of air leakage at the kiln head, causing a series of problems such as uncontrollable oxygen content in the kiln, disordered combustion conditions in the kiln, and frequent supplementary combustion in the secondary combustion chamber.

Moreover, due to the different physical properties of different hazardous wastes, it is easy to cause danger when mixed together. There have been many incidents of inner pit explosions and deflagrations in China.

In addition, the "pit type" feeding method is also prone to leachate pollution of groundwater and soil, and environmental pollution such as air pollution caused by the natural discharge of waste gas

[0004] In addition, the existing hazardous waste treatment system also has many deficiencies in the treatment of slag and tail gas. For example, the slag generally adopts a water-cooled mode, and the water vapor entering the secondary combustion chamber during the cooling process will reduce the combustion temperature of the secondary combustion chamber and affect the flue gas. After burning out the quality, the water-cooled slag is generally dried in the air, and most of the sewage containing high-polluting components in the slag seeps into the ground and enters secondary pollution

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