Waste incineration system and method based on selective catalytic denitration catalytic combustion integration

Abstract

The invention discloses a waste incineration system and method based on selective catalytic denitration catalytic combustion integration. The waste incineration system comprises a waste incineration furnace, a high-temperature heat exchanger, a high-temperature dust remover, a selective catalytic denitration catalytic combustion integrated device, a low-temperature heat exchanger and a flue gas purification device. Dust collected by the high-temperature dust remover is free of dioxin low-temperature synthesized in the dust, and the toxicity is low; the dust concentration of flue gas after high-temperature dust removal is low, the abrasion of an SCRCB device catalyst is small, the pollution is little, the service life of the catalyst is prolonged, and the chemical reaction efficiency is improved; and the low-temperature synthesis temperature range of the dioxin is within the range from 200 DEG C to 400 DEG C, the dust concentration of the flue gas is low, a dust catalyst needed by low-temperature synthesis of dioxin is lacked, the concentration of the carbon particles and the carbon-containing organic matters of the flue gas is low, a substance required by low-temperature synthesisof dioxin is lacked, and the low-temperature synthesis amount of dioxin is greatly reduced.

Description

technical field [0001] The invention relates to waste incineration technology, in particular to a waste incineration system and method based on selective catalytic denitrification and catalytic combustion integration. Background technique [0002] Waste incineration has the advantages of reduction, harmlessness, and obvious resource utilization, and has been rapidly popularized and applied. However, in the process of garbage incineration, not only nitrogen oxides are produced, but also highly toxic substances, dioxins (Dioxins), are produced, threatening the living environment of human beings. In the process of waste incineration, the formation methods of dioxin include: formation in the furnace and low-temperature synthesis in the tail flue. [0003] Through the "3T+E" process, that is, controlling: incineration temperature, residence time of flue gas in the furnace, gas-solid turbulence of flue gas and excess air volume, the formation of dioxins in the furnace can be effe...

AI Technical Summary

Problems solved by technology

However, in the process of waste incineration, not only nitrogen oxides are produced, but also highly toxic substances, dioxins (Dioxins), threaten the living environment of human beings.

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