Dust removal, desulfurization and denitrification integrated treatment device

Abstract

The present invention discloses a dust removal, desulfurization and denitrification integrated treatment device which comprises a reaction tower, the bottom end of the reaction tower is communicated with a smoke inlet pipeline, and the interior of the reaction tower is sequentially divided into a desulfurization and denitrification layer, a demisting layer and a dust removal layer from bottom to top; a flow guide assembly for preventing non-uniform distribution of flue gas in the reaction tower is arranged in the desulfurization and denitrification layer, a spraying assembly is arranged above the flow guide assembly, and an adjusting assembly capable of adjusting the spraying amount according to the content of the flue gas in the reaction tower is mounted on the spraying assembly. The flow guide assembly is arranged, the flue gas in the reaction tower can be ensured to uniformly contact and react with desulfurization and denitrification slurry sprayed by the spraying assembly, and when the pressure relief piece relieves the pressure of the flue gas in the guide cylinder, the flow of the flue gas in the reaction tower is sharply increased, and at the moment, the flow of the slurry in the spraying pipe is increased under the action of the adjusting assembly, the flue gas treatment effect is improved, and the device has the advantages of low treatment cost and the like.

Description

technical field [0001] The invention relates to the technical field of flue gas purification treatment, in particular to an integrated treatment device for dust removal, desulfurization and denitrification. Background technique [0002] Normally, the flue gas purification system is usually divided into three stages: denitrification, dust removal and desulfurization. After being cooled in the air preheater (GAH), it enters the electrostatic precipitator. The original flue gas after dust removal is first pressurized by the desulfurization fan, and then cooled by the flue gas reheater (GGH) and then enters the absorption tower for desulfurization. The desulfurized flue gas The gas is discharged from the absorption tower, and the discharged net flue gas is reheated by the GGH and discharged into the chimney. The resistance of the entire flue gas system is overcome by a specially equipped desulfurization fan. [0003] At present, when the existing flue gas purification reaction ...

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Problems solved by technology

[0003] At present, when the existing flue gas purification reaction towers on the market perform flue gas purification, the flue gas is usually sent into the reaction tower through the flue gas inlet pipe, and then the flue gas is sprayed with desulfurization and denitrification slurry, and the desulfurization and denitrification slurry is used to spray the flue gas. The flue gas is purified by contacting the exhaust gas with a chemical reaction. However, in the actual process of purifying the flue gas, it is found that the existing technology cannot adjust the amount of slurry injection according to the content of the flue gas in the reaction tower, thereby increasing the amount of flue gas. At the same time, only relying on the diffusion and inertia of the flue gas itself to distribute the flue gas will easily lead to uneven distribution of the flue gas in the reaction tower. When spraying, the area with low flue gas concentration is likely to cause waste of slurry, while Areas with high flue gas concentration are prone to incomplete purification. For this reason, we propose an integrated treatment device for dust removal, desulfurization and denitrification

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