Device for injecting and inhaling in-tower oxidized air for desulfurizing absorption tower

Abstract

The invention relates to a device for injecting and inhaling in-tower oxidized air for a desulfurizing absorption tower. The device comprises a slurry accelerating pipe (1), a slurry expansion air suction pipe (2), an air suction pipe sleeve (3), an oxidized air and slurry mixing pipe (4) and an oxidized air suction pipe (5), wherein the air suction pipe sleeve (3) is sleeved outside the slurry expansion air suction pipe (2); a liquid outlet end of the slurry accelerating pipe (1) is axially connected with a liquid inlet end of the slurry expansion air suction pipe (2) and one end of the air suction pipe sleeve (3); the other end of the air suction pipe sleeve (3) is communicated with a liquid inlet end of the oxidized air and slurry mixing pipe (4); and one end of the oxidized air suction pipe (5) is transversely communicated with the air suction pipe sleeve (3). According to the device, the oxidized air can be rapidly inhaled and can be mixed with the slurry, the pressure requirement of the oxidized air is low, the dependence on an oxidation air blower is low, the operating cost can be saved, and the noise is reduced.

Description

technical field [0001] The invention relates to a flue gas purification device, in particular to an oxidizing air jet suction device used in a desulfurization absorption tower. Background technique [0002] During the operation of the spray absorption tower, in order to make the SO absorbed in the slurry 2 And other harmful gases are removed, it is necessary to use the oxidation air provided by the oxidation fan and other equipment to transport to the slurry in the absorption tower, provide oxygen for the slurry, and remove the SO in the slurry 2 、H 2 SO 3 , SO 3 2- Oxidized to SO 4 2- and with the Ca in the slurry 2+ Reaction to form CaSO 4 2H 2 O, the oxidizing air is often called oxidizing wind in engineering. In the traditional desulfurization absorption tower, when the oxidation air is introduced into the slurry tank, a mechanical stirring device needs to be installed in the pulp tank to fully mix the oxidation air and the slurry, so as to increase the oxidati...

AI Technical Summary

Problems solved by technology

The existing oxidation air addition method is to use the oxidation fan to boost the air pressure and send it to a specific position inside the slurry pool of the absorption tower. This oxidation air addition method has insurmountable shortcomings such as high energy consumption, high noise and low reliability.

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