Desulfurization slurry spraying device

Abstract

The invention provides a desulfurization slurry spraying device. The desulfurization slurry spraying device is composed of two or more layers of spraying layers, wherein the spraying layers are sequentially distributed in a desulfurization tower from top to bottom, the spraying layers comprise primary mother tubes, supporting beams, secondary mother tubes, branches, first nozzles and second nozzles, the primary mother tubes are supported by the supporting beams, two ends of each supporting beam are fixed to a tower wall of the desulfurization tower, the corresponding secondary mother tubes are connected with two sides of each primary mother tube, the corresponding branches are connected with two sides of each secondary mother tube, the tail ends of the branches are connected with nozzles, the nozzles comprise the first nozzles or the second nozzles, each two adjacent spraying layers are composed of an upper-layer spraying layer and a lower-layer spraying layer, and an included angle beta of downward projections of the corresponding primary mother tube of each lower-layer spraying layer and the corresponding primary mother tube of the corresponding upper-layer spraying layer exists. By means of the spraying device, the phenomenon of escape of smoke along a wall can be solved basically, the desulfurization rate and the dust removal rate are improved, a liquid-gas ratio can be reduced appropriately, and more strict requirements of environmental protection can be met.

Description

【Technical field】 [0001] The invention relates to the technical field of spraying devices, in particular to a desulfurization slurry spraying device. 【Background technique】 [0002] The spray device is one of the core equipment of the wet desulfurization spray tower, which has a direct impact on the desulfurization efficiency and dust removal rate. The spray device is generally composed of a support, a main pipe, a branch pipe and a nozzle. The desulfurization slurry enters the spray device through the pump, and the slurry is distributed to the nozzle through the main pipe and the branch pipe. Contact to achieve the purpose of removing sulfur dioxide and dust. [0003] The existing conventional spraying device is composed of 2 to 5 layers of spraying layers, which are arranged up and down in the desulfurization tower. Each layer of spraying layer is equipped with 1 to 2 main pipes, and several branch pipes are arranged on both sides of each main pipe. Side nozzle. General...

AI Technical Summary

Problems solved by technology

[0005] 1. Since the nozzles of the existing spraying device are evenly arranged on the entire cross-section, after the slurry is sprayed through the nozzles, the slurry mist crowns overlap each other, the central area has a large overlap, and the edge of the desulfurization tower has a small overlap, resulting in a large amount of flue gas along the wall escape, the removal rate of sulfur dioxide and dust is greatly reduced;

[0006] 2. In order to ensure a certain spray coverage, the distance between the nozzles has certain requirements, and the atomized slurry often causes erosion and wear on the support beam and the larger diameter of the main pipe;

[0007] 3. When individual nozzles are blocked, a short circuit of flue gas will be formed, SO 2 And dust is easy to exceed the standard discharge;

[0008] 4. The spray layers do not cross each other, or the cross angle is not suitable, so that the weak areas between the upper and lower spray layers cannot offset each other, especially along the area near the tower

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