A device and process for demisting, dedusting and whitening of flue gas

Abstract

The invention relates to the technical field of flue gas treatment, and provides a flue gas demist, dust, and whitening device and process, including: a tower shell and a desulfurization absorption layer arranged inside the tower shell, a gas distribution plate, and a spray section , Demister; the desulfurization absorption layer is set on the upper side of the flue gas inlet; the gas distribution plate is set on the upper side of the desulfurization absorption layer; the spray section is set on the upper side of the gas distribution plate; The mist device includes a demister shell, a fiber bed and a demister plate set inside the demister shell, and the fiber bed is set on the upper side of the demister shell. There are spiral protrusions on the filaments, and the fiber filaments are coated with hydrophobic materials. The defogging plate group is arranged on the lower side of the fiber bed. The defogging plate group is equipped with a plurality of plate group blades. The blades are coated with a hydrophobic material. The device has a simple structure and reliable performance, and can remove moisture from the flue gas, eliminate the formation of "white plume", and achieve ultra-clean emission.

Description

technical field [0001] The invention relates to the technical field of flue gas treatment, and in particular provides a flue gas demist, dust, and whitening device and process. Background technique [0002] In the process of industrial production, the mist suspended in the flue gas is unavoidable. Fog droplets are mainly generated by mechanical force, steam condensation, chemical reaction or gas-liquid entrainment. For the treatment of sulfur-containing waste gas in power plants, metallurgy and coking industries, most enterprises use wet desulfurization technology, and the moisture content in the flue gas after desulfurization treatment is close to saturation. If the saturated wet flue gas is directly discharged through the chimney, it will be in contact with the ambient air with a lower temperature, and a large amount of water vapor in the saturated flue gas will condense into small droplets when it is cooled, and form a "white plume" through the refraction or scattering o...

AI Technical Summary

Problems solved by technology

[0004] After wet desulfurization, the moisture content of the flue gas is close to saturation, and it is directly discharged into the atmosphere, causing a lot of waste of water resources and forming obvious visual pollution

Moreover, the wet smoke plume contains a certain amount of acidic components. During the diffusion process, the condensed and precipitated small droplets fall to the ground, which will cause environmental pollution to the surrounding area, affect the life and health of the surrounding people, and be detrimental to the public relations and image of the enterprise.

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