Spray device of desulfurization tower

Abstract

The invention discloses a spray device of a desulfurization tower. The spray device comprises a desulfurization tower body, a slurry storage tank arranged below the desulfurization tower body, a demister disposed at the upper part inside the desulfurization tower body and a gypsum preparation transmission device arranged at one side of the slurry storage tank. A lower spray layer which sprays downwards is disposed below the demister. An upper spray layer which sprays upwards is mounted above the slurry storage tank. A smoke inlet is arranged between the lower spray layer and the upper spray layer. The gypsum preparation transmission device is connected with the bottom of the slurry storage tank. Energy consumption of a slurry circulating pump is saved, desulphurization cost is reduced, the energy-saving purpose is achieved, and desulphurization efficiency is greatly enhanced.

Description

technical field [0001] The invention relates to the field of desulfurization towers, in particular to a spray device in a desulfurization tower. Background technique [0002] With the rapid development of the power industry, the country is also increasing its environmental protection efforts, especially for SO, one of the main pollutants in the atmosphere. 2 Strict emission standards have been implemented. At present, wet desulfurization technology has always been dominant in the field of desulfurization. In the traditional wet desulfurization process, flue gas enters the interior of the desulfurization tower from the flue inlet, and rises along the height of the tower after being bent by the wall. At the same time, The slurry circulation pump pumps the slurry from the bottom of the slurry storage tank 2 to the spray layer, atomizes the nozzle and sprays downward, mixes with the countercurrent flue gas, and reacts, thereby desulfurizing the sulfur dioxide in the flue ga...

AI Technical Summary

Problems solved by technology

[0005] The disturbance between gas and liquid in the traditional spray area is not strong, resulting in insufficient mixing between gas and liquid, which affects the improvement of desulfurization efficiency, especially when SO in the flue gas 2 When the content is too high, the desulfurization efficiency is difficult to meet the national standard

[0006] Due to the restriction of the height of the reaction zone, the residence time of the slurry in the tower during the downward spraying process is too short to fully mix and react with the flue gas, which limits the improvement of the desulfurization efficiency

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