Dedusting, denitration and desulfurization integrated system

Abstract

The invention relates to a dust removal, denitration and desulfurization integrated system which comprises a seawater desulfurization system, a cloth bag dust removal system, a hot blast stove system and a denitration system, the seawater desulfurization system comprises a flue gas system, an SO2 absorption system, a seawater supply system and a seawater recovery system; the flue gas system comprises a flue gas heat exchanger, a waste heat recovery device and a booster fan; the SO2 absorption system comprises an absorption tower; the seawater supply system comprises a seawater intake pump, a filter screen and a seawater booster pump; the seawater recovery system comprises an aeration tank; the bag-type dust removal system comprises a bag-type dust remover and an ash silo; the hot-blast stove system comprises a smoke conveying system, a combustion system, a control system and a hot-blast stove body. The denitration system comprises an SCR denitration system, an ammonia water storage and supply system and an ammonia water discharge system. The dust removal device adopts a cloth bag dust removal and circulating ash process, adopts a medium-temperature SCR (Selective Catalytic Reduction) process for denitration and a seawater desulfurization process for desulfurization, is used for treating 100% of flue gas under a given design condition, and can achieve the emission target of dust, NOx and SO2.

Description

technical field [0001] The invention relates to the technical field of boiler flue gas emission optimization, in particular to an integrated system of dust removal, denitration and desulfurization. Background technique [0002] The boilers of coastal oil storage and transportation enterprises generally use a shared double-alkali desulfurization system without denitration and dust removal systems. SUMMARY OF THE INVENTION [0003] The purpose of the present invention is an integrated system of dust removal, denitration and desulfurization. By dismantling the existing dual-alkali desulfurization system and setting up a new integrated system of dust removal, denitration and desulfurization, the dust, NOx, SO 2 Emission target. [0004] The invention provides an integrated system of dust removal, denitration and desulfurization, including a seawater desulfurization system, a bag dust removal system, a hot blast stove system and a denitration system; [0005] The seawater des...

AI Technical Summary

Problems solved by technology

[0002] Boilers in coastal oil storage and transportation enterprises generally use a common dual-alkali desulfurization system without denitrification and dust removal systems. The flue gas emitted by them cannot meet the environmental protection emission requirements of pollutants in key areas after being treated by existing environmental protection facilities, and needs to be remodeled

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