Coal-fired flue gas semi-dry method combined desulfurization and denitrification system and method
A technology for coal-fired flue gas, desulfurization and denitrification, applied in the field of flue gas purification, can solve the problems of inability to meet NOx emission requirements, low absorption efficiency of semi-dry desulfurization system, limited oxidation efficiency, etc., so as to avoid ineffective decomposition and achieve stable content. , improve the effect of processing
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[0033] The present invention will be further described in detail below in conjunction with specific embodiments, which are explanations of the present invention rather than limitations.
[0034] The coal-fired flue gas semi-dry method combined desulfurization and denitrification system of the present invention, such as figure 1 As shown, it includes four parts: pre-oxidation system, absorption system, dust removal system and chimney. The oxidation system consists of sequentially linked H 2 o 2 Storage tank 1, delivery pump 2, ultrasonic nebulizer 4, atomized H 2 o 2 Carried by compressed gas, the inlet of the ultrasonic atomizer 4 is connected to the compressed gas tank 3, and the outlet is connected to the spray grid 5, and a section mixer 6 is set in front of the spray grid 5 for H 2 o 2 Mix well with flue gas. h 2 o 2 Inject into the flue to oxidize NO to NO 2 , containing SO 2 and NO 2 The flue gas of the gas enters the absorption tower 8 through the induced dra...
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