Desulphurization absorption tower

Abstract

The invention discloses a desulphurization absorption tower which comprises an absorption tower body (1), main spraying layers and auxiliary spraying layers, wherein the main spraying layers are arranged in a spraying area inside the absorption tower body (1); each auxiliary spraying layer is arranged between every two adjacent main spraying layers and distributed on the side wall of the spraying area; each auxiliary spraying layer comprises a nozzle (7), a slurry main pipe (5) which is arranged on the side wall of the spraying area, and a slurry branch pipe (6) which is connected with the slurry main pipe (5) and the nozzle (7). By adopting the desulphurization absorption tower, the phenomenon that the slurry leaks from the side wall can be effectively reduced, and the desulphurization micro-discharging can be realized; moreover, the running efficiency is high, the energy consumption is low, the energy-saving emission-reduction effect is remarkable, and the desulphurization absorption tower can be widely applied to the industries such as electric power, cement, metallurgy, chemical industry and the like.

Description

technical field [0001] The invention relates to flue gas desulfurization equipment, in particular to a spray type desulfurization absorption tower in a flue gas separation system, and belongs to the technical field of environmental protection. Background technique [0002] The absorption tower is the core device of flue gas desulfurization, and it is the place where the desulfurization reaction is carried out and the process of absorbing harmful gases is completed. [0003] There are many structures of wet desulfurization absorption towers. According to different gas-liquid contact methods, desulfurization towers can be divided into spray towers, packed towers, bubble towers, and liquid column absorption towers. Among them, the spray tower has high efficiency, small resistance, With the advantages of high availability, it is the dominant tower type in the wet lime / limestone FGD process. [0004] When the spray tower is in operation, the lime slurry is pumped to the nozzles ...

AI Technical Summary

Problems solved by technology

But the disadvantage is that if the size of the slurry redistribution ring 3' is too small, it will not be able to play its due role; if it is set too large, it will reduce the flow cross section, increase the flow rate of the flue gas in the absorption area, and reduce the concentration of the flue gas in the absorption area. residence time, so the effect is often very unstable, and improper setting may even have the opposite effect; at the same time, due to the increase of the total resistance of the flue gas in the tower, it also increases the operating energy consumption

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