A CO boiler with dust-proof and denitrification functions

Abstract

The invention relates to a CO boiler having the dustproof function and the denitration function. The CO boiler having the dustproof function and the denitration function comprises a flue, a combustion chamber, steam drums, an evaporation section and an economizer section. The CO boiler further comprises an ammonia spraying and mixing mechanism and a dustproof denitration reactor. The ammonia spraying and mixing mechanism is arranged above the evaporation section or between the evaporation section and the denitration reactor. The dustproof denitration reactor is arranged between the evaporation section and the economizer section and comprises a mixed-smoke inlet section, a denitration section and a purified-smoke discharging section, wherein an ash removal section is arranged between the mixed-smoke inlet section and the denitration section, ash baffles are arranged in the ash removal section, an ash bin is arranged in the denitration section, the center line of the ash bin and the center line of the reactor coincide, and the lower end of the ash bin is connected with an ash discharging pipeline. According to the CO boiler having the dustproof function and the denitration function, the denitration reactor is arranged in the CO boiler, so that the utilization rate of smoke heat is increased; due to the fact that the ash removal section is arranged in the reactor, smoke dust of mixed smoke can be removed before the mixed smoke enters denitration units, catalyst hole channels are prevented from being blocked, and the denitration efficiency and the denitration effect are improved.

Description

technical field [0001] The invention relates to a flue gas treatment device, in particular to a CO boiler with the function of dust prevention and denitrification. Background technique [0002] Nitrogen oxides (NO x ) is one of the main pollution sources of air pollution. In the occupational environment, it is exposed to several gas mixtures, often called gunpowder (gas), mainly NO and NO 2 , to NO 2 Mainly. NO x All have varying degrees of toxicity, with NO and NO 2 Mainly NO x It is an important cause of photochemical smog and acid rain. NO in automobile exhaust x Toxic smog formed by the reaction of hydrocarbons with ultraviolet radiation is called photochemical smog. Photochemical smog has a characteristic odor, irritates the eyes, damages plants, and can reduce atmospheric visibility. In addition, NO x Nitric and nitrous acids that react with water in the air are components of acid rain. NO x The harm to the human body is mainly manifested in the damage to t...

AI Technical Summary

Problems solved by technology

[0010] Aiming at the problems of low flue gas denitrification efficiency, uneven mixing of flue gas and ammonia gas, large area occupied by denitrification equipment and high investment in the prior art, the present invention provides a CO boiler with denitrification function, which can effectively improve the efficiency of flue gas and ammonia Improve gas mixing uniformity, improve denitrification efficiency and prevent ammonia escape, and save equipment investment

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