Flue gas recirculation type garbage pyrolysis gasification oxygen-rich incinerator

Abstract

The invention discloses a flue gas recirculation type garbage pyrolysis gasification oxygen-rich incinerator which comprises an incinerator main body, a flue gas recirculation type air feeding system, a flue gas filter device, an oxygen-rich air feeding system, a flue gas waste-heat heat exchanger and a flue gas purifying device, wherein the incinerator main body comprises a combustion chamber I and a combustion chamber II which are respectively used for garbage pyrolysis gasification and incineration of combustible materials; the circulated flue gas is injected into the incinerator through the flue gas recirculation type air feeding system, so that turbulivity in the incinerator is improved, garbage incineration is strengthened, incompletely-combusted pollutants such as a dioxin precursor and the like are reduced, and discharge of the pollutants is reduced. The oxygen-rich air feeding system can increase an incineration temperature, and can reduce consumption of auxiliary fuels; the flue gas filter device and the flue gas purifying device can further reduce discharge of pollutants; and the flue gas waste-heat heat exchanger can recycle flue gas waste heat. The flue gas recirculation type garbage pyrolysis gasification oxygen-rich incinerator can effectively solve the problems that a garbage thermal value is low, water content is high, an incineration temperature caused by low oxygen content in air is low, combustion efficiency is poor, consumption of auxiliary fuels is high, discharge of pollutants is not up to standard, and the like.

Description

technical field [0001] The invention belongs to the field of incinerators, and more specifically relates to a garbage pyrolysis gasification oxygen-enriched incinerator adopting a flue gas circulation mode. Background technique [0002] With the development of the economy, people's material living standards have been greatly improved, accompanied by a large amount of garbage, which has caused serious pollution to the atmosphere, soil, water sources, etc., and has caused great harm to our living environment. It is urgent to solve the garbage problem. . Incineration treatment is currently recognized as a better treatment method for volume reduction and volume reduction. Except for the ash generated, the combustible substances are completely burned, and it is generally believed that it can reduce volume by 85-90%. Currently in developed countries, incineration is the mainstream waste terminal treatment technology. In recent years, my country's waste incineration industry has ...

AI Technical Summary

Problems solved by technology

[0004] ① It is difficult to achieve stable incineration and reach the specified incineration temperature

In order to meet the requirements, a large amount of auxiliary fuel must be invested, which increases the emission of pollutants such as dioxins and operating costs

[0005] ② In order to meet the residence time requirement of 2S, the flue gas stroke in the furnace is too long or the flue gas flow rate is too low, which may easily cause insufficient turbulence in the furnace, affect the incineration effect, and increase the emission of pollutants such as dioxins

[0006] ③Due to lack of oxygen when operating in plateau areas, the above problems will be more serious

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