Oxygen-enriched combustion transformation method and device for garbage incineration grate furnace

Abstract

The invention discloses an oxygen-enriched combustion transformation method for a garbage incineration grate furnace. The method comprises the steps that an oxygen injecting step is added before the primary air of a combustion section, namely, oxygen obtained by gasifying and pressure regulating is injected into a primary air pipeline of the combustion section, so the air is fully mixed with the normal air of the combustion section and is then injected into a hearth; injection of normal secondary air is stopped, a draught fan behind a cloth bag deduster is connected with a secondary fan by a pipeline, so circulated smoke is guided into a secondary air pipeline by the secondary draught fan, and is injected into the hearth by a secondary air opening. The invention discloses a corresponding oxygen-enriched combustion device. The excess air coefficient is reduced, the flame temperature in the furnace is improved, the combustion condition is optimized, the generation of pollutants such as dioxin is effectively inhibited, the efficient, stable and safe operation of the incineration equipment is ensured, the smoke exhaust is reduced, the smoke heat loss and output of the draught fan are reduced, the combustion efficiency is improved, and the investment and operation cost of smoke purifying equipment are favorably reduced.

Description

technical field [0001] The invention relates to an oxygen-enriched combustion modification method for a garbage incinerator grate furnace, in particular to an oxygen-enriched combustion modification method for a garbage incinerator grate furnace with secondary air, and belongs to the technical field of waste incineration power generation. Background technique [0002] In our country, with the development of society and the improvement of people's living standards, especially the acceleration of urbanization and the continuous growth of population, there are more and more domestic garbage, and the pollution of garbage to the environment is also becoming more and more serious. Surrounded by garbage. According to the principle of "resources, reduction, and harmlessness" proposed by my country for waste disposal and the characteristics of waste in my country, in recent years, waste incineration technology has gradually become a new trend of waste treatment in my country. [000...

AI Technical Summary

Problems solved by technology

[0005] 1. Garbage incineration is unstable. For garbage with low calorific value and high moisture, the incineration effect is often poor during the start-up process of the unit or when the unit needs to be operated at a low load, and coal, oil and other combustion-supporting fuels need to be input

[0006] 2. The components of pollutants produced by waste incineration are complex and difficult to control

Garbage incineration will produce pollutants such as SOX, NOX, HCl, heavy metals, and dioxins. It requires high levels of pollutant treatment technology and purification efficiency, and high operating costs, which have a great impact on the economics of waste incineration.

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