Dust removal, desulfurization and denitrification device of coal-fired power generation boiler

Abstract

The invention provides a dust removal, desulfurization and denitrification device of a coal-fired power generation boiler. The dust removal, desulfurization and denitrification device of the coal-fired power generation boiler comprises a static dust remover, a dust removal, desulfurization and denitrification primary spraying chamber, a dust removal, desulfurization and denitrification secondary spraying chamber and a static demisting chamber which are sequentially arranged from front to back and are connected through an exhaust pipeline; the static demisting chamber is internally provided with a corona wire and a dust collection pole plate; an induced draft fan is assembled in the exhaust pipeline of the static demisting chamber; a water tank with a water seal on the bottom surface is arranged below the dust removal, desulfurization and denitrification primary spraying chamber, the dust removal, desulfurization and denitrification secondary spraying chamber and the static demisting chamber; and an aerator is arranged inside the water tank, and is connected with an ozone generator. The dust removal, desulfurization and denitrification device of the coal-fired power generation boiler, provided by the invention, has the advantages of simple structure, low construction and operation cost, and high dust removal, desulfurization and denitrification efficiency. Meanwhile, the desulfurization and the denitrification of smoke can be realized through a strong oxidation function of ozone; and the conventional acid-base neutralization method is eliminated. Not only can the smoke desulfurization and denitrification process be simplified, but also the environmental friendliness problem in the raw material production caused by using lime and ammonia water as raw materials of the desulfurization and denitrification process can be solved.

Description

technical field [0001] The invention relates to a flue gas emission purification device, in particular to a dust removal, desulfurization and denitrification device for a coal-fired power generation boiler. Background technique [0002] Coal combustion flue gas contains a large amount of soot, sulfide and nitrogen oxides, which is the main source of environmental pollution. With the enhancement of people's awareness of environmental protection, the purification standards for flue gas emissions have been rapidly improved, especially strict flue gas emission standards have been formulated for coal-fired power boilers. At present, the desulfurization and denitrification of flue gas emitted by coal-fired power generation boilers mostly use acid-base neutralization and catalytic reduction technology. Although the purification efficiency is high, the investment and operation costs of the equipment are large. The production of ammonia water will produce waste gas containing a larg...

AI Technical Summary

Problems solved by technology

At present, the desulfurization and denitrification of flue gas emitted by coal-fired power generation boilers mostly use acid-base neutralization and catalytic reduction technology. The production of ammonia water will produce waste gas containing a large amount of carbon dioxide, which runs counter to the original intention of protecting the environment

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