A combined device for flue gas desulfurization and waste liquid oxidation

Abstract

The present invention discloses a flue gas desulfurization and waste liquid oxidation combined apparatus, which comprises a first-stage circulating oxidation system and a second-stage circulating absorption system, wherein the first-stage circulating oxidation system comprises a spraying tower, a flue gas diversion pipe and a first-stage circulating tank, a bubbling contact area member is arranged inside the first-stage circulating tank, a plurality of spraying nozzles are arranged in the spraying tower, the second-stage circulating absorption system comprises a second-stage circulating tank, a spraying packing tower and a demister, and the first-stage circulating tank and the second-stage circulating tank are connected through an overflow pipeline so as to form an H-shaped structure. compared with the existing apparatus in the prior art, the flue gas desulfurization and waste liquid oxidation combined apparatus of the present invention has characteristics of simple apparatus, high desulfurization efficiency, high oxidation efficiency, high apparatus integration and the like. In addition, the performing of the oxidation reaction and the external discharge of the waste liquid and the waste gas achieve the environmental protection requirements while the desulfurization absorption is performed.

Description

technical field [0001] The invention relates to a flue gas desulfurization device, which belongs to the field of environmental treatment. The invention particularly relates to a combined device for flue gas desulfurization and waste liquid oxidation. Background technique [0002] Sulfur dioxide (SO 2 ) is a global air pollutant whose main hazard is the formation of acid rain. Also, SO in the environment 2 It can lead to a decline in children's immune function, and an increase in the prevalence of respiratory and eye diseases among the general public. In the refinery, the catalytic gasoline adsorption desulfurization device is a new type of production device, which generates flue gas during the regeneration process of its adsorbent, in which the concentration of sulfur dioxide is generally 10,000-100,000 mg / m 3 , the oxygen content is generally 2000 ~ 10000mg / m 3 , must carry out flue gas desulfurization treatment. [0003] At present, the flue gas desulfurization mainl...

AI Technical Summary

Problems solved by technology

Although this device can improve the desulfurization effect of high-concentration flue gas to a certain extent, the salt concentration of the rich absorption liquid obtained by absorbing high-concentration sulfur dioxide is very high, and the forced oxidation is carried out through the bubbling reactor, and the power consumption is significantly increased, and even the waste liquid Unable to meet emission standards

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