Sintering flue gas desulfurization system and sintering flue gas desulfurization method

Abstract

The invention provides a sintering flue gas desulfurization system and a sintering flue gas desulfurization method. The system comprises a slaked lime slurry supply device, an air supply device, a water storage tank, a three-fluid spray gun, a desulfurization tower, a dust removal device and a flue inlet pipeline, wherein the slaked lime slurry supply device is communicated with the three-fluid spray gun, the air supply device is communicated with the three-fluid spray gun, the water storage tank is communicated with the three-fluid spray gun through a liquid conveying pump, a flue gas inlet and a flue gas outlet are formed in the bottom of the desulfurization tower, a venturi tube is communicated below the flue gas inlet of the desulfurization tower, and is communicated with the flue inlet pipeline, and the nozzle of the three-fluid spray gun is arranged on the flue inlet pipeline below the venturi tube. According to the invention, the sintering flue gas desulfurization method appliesthe sintering flue gas desulfurization system, the sintering flue gas desulfurization system combines the advantages of a wet desulfurization method and a semi-dry desulfurization method, operation is flexible and reliable, the flue gas load application range is wide, corrosion and white smoke are avoided, and the desulfurization efficiency can reach 95-99%.

Description

technical field [0001] The invention belongs to the field of flue gas treatment equipment and methods, and in particular relates to a sintering flue gas desulfurization system and method. Background technique [0002] The limestone (lime)-gypsum method and wet desulfurization technology are widely used in sintering flue gas desulfurization technology. The wet desulfurization efficiency is high, which can be as high as 99%. "question. Moreover, the amount of sintering flue gas is large, and the sulfur content is low, the moisture content is high, and the chloride ion is high, which causes the corrosion problem of the wet desulfurization system equipment to be very serious, and seriously threatens the stable operation of the entire desulfurization system. Contents of the invention [0003] The object of the present invention is to overcome the shortcomings of the prior art and provide a sintering flue gas desulfurization system and method. [0004] In order to achieve the ...

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Problems solved by technology

[0002] Limestone (lime)-gypsum method and wet desulfurization technology are widely used in sintering flue gas desulfurization technology. The wet desulfurization efficiency is high, which can be as high as 99%. "question

Moreover, the amount of sintering flue gas is large, and the sulfur content is low, the moisture content is high, and the chloride ion is high, which causes the corrosion problem of the equipment in the wet desulfurization system to be very serious, which seriously threatens the stable operation of the entire desulfurization system.

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