Boiler rear flue gas purifying treatment device

Abstract

The invention provides a boiler rear flue gas purifying treatment device. The boiler rear flue gas purifying treatment device comprises an upper machine body, a box pipe and a lower machine body, wherein the box pipe is connected to the lower end of the upper machine body; the lower machine body is welded on the bottom end of the box pipe; and a flue gas port is formed in the front of the lower machine body. The boiler rear flue gas purifying treatment device is suitable for flue gas treatment, and can perform secondary treatment on flue gas at the later segments of a traditional boiler and adesulfurization and denitration device; in the specific application process, the flue gas port of the device is used for abutting joint with a flue gas discharging pipeline of the desulfurization anddenitration device of the boiler; after the flue gas is generated by the boiler and is purified by the desulfurization and denitration device, the flue gas enters a flue gas circulation pipe of the device through the flue gas port; after the flue gas flows to an inner flue gas cavity of the upper end from the flue gas circulation pipe under the effect of rising, the flue gas drives draught fans ina hot air box and a cold air box at the left end and right end through a distribution box and a motor to work; and an external pipe port formed in the cold air box is used for abutting joint with external environments, so that external air at the external pipe port is sucked through the work of the draught fans.

Description

technical field [0001] The invention relates to the technical field of flue gas treatment, in particular to a post-boiler flue gas dewhitening treatment device. Background technique [0002] Flue gas dewhitening is a flue gas treatment technology. It is produced from the wet saturated flue gas of the power plant boiler after dust removal, desulfurization and discharge from the chimney. Due to the low ambient temperature, the water vapor in the flue gas condenses and forms at the chimney outlet. Misty water vapor, generally white. [0003] However, the existing flue gas dewhitening treatment device usually only heats the flue gas after desulfurization and denitrification treatment, so as to dry the flue gas. However, the dried flue gas will emit a lot of heat during the heating process. The increase in power consumption will easily cause corrosion to the pipeline of the device. At the same time, there are unpurified residual impurities and acidic components in the flue gas a...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a post-boiler flue gas de-whitening treatment device, which is capable of de-whitening the flue gas while avoiding the generation of secondary pollutants that affect the emission quality, and the de-whitening technology reliably avoids corrosion The advantages of the device and other advantages solve the problem that the existing flue gas de-whitening technology has a simple treatment method, and the power consumption of the de-whitening treatment is too large and the energy saving is low. At the same time, it is easy to generate redundant emissions and impurities that affect the emission quality of the flue gas.

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