Sodium-calcium dual-alkali method sintering flue gas desulfurization device adopting sodium-calcium dual-alkali method

Abstract

The invention discloses a sodium-calcium dual-alkali method sintering flue gas desulfurization device, and relates to the technical field of flue gas desulfurization. The device comprises a bag-type dust collector, a fan, an absorption tower, a demisting tower, a first slurrying tank, a first alkali liquor tank, a sedimentation tank, a second slurrying tank, a second alkali liquor tank, a filter pressing device and a chimney. According to the invention, the problems of serious scaling and blockage of system equipment and pipelines due to the fact that circulating spray liquid still contains solid-phase particles such as gypsum in practical application of the dual-alkali desulfurization device are solved, and the device is provided with the first slurrying tank, the second slurrying tank and the stirring device, sodium hydroxide and calcium oxide are more fully dissolved in water so that sodium hydroxide and calcium oxide react with flue gas more fully to connect the first liquid suction pipe and the first liquid suction pipe; the first liquid suction pipe sucks supernatant on the surface of the sedimentation tank so that the content of solid particles in spraying liquid is reduced,and the serious structure and blockage of equipment are reduced.

Description

technical field [0001] The invention belongs to the technical field of flue gas desulfurization, in particular to a sodium-calcium double-alkali sintering flue gas desulfurization device. Background technique [0002] The sulfur dioxide contained in the flue gas will cause very serious pollution to the atmospheric environment, seriously destroy the ecological balance, and cause great harm to the health of animals, plants and humans. Acid rain will also occur to a large extent, which will damage the building Corrosion and destruction of objects seriously affect the ecological environment and living environment. Therefore, in order to effectively reduce the hazards of sulfur dioxide, relevant departments continue to research and develop related treatment technologies. At the present stage, the technical means to control sulfur dioxide pollution is mainly flue gas desulfurization, and in industry, it is mainly wet desulfurization technology. Among them, the wet desulfurizatio...

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Problems solved by technology

[0006] The purpose of the present invention is to provide a sodium-calcium double-alkali sintering flue gas desulfurization device, by setting the first slurry tank, the first lye pool, the sedimentation tank, the second slurry tank, the second lye pool, the press filter The device solves the problem that the circulating spray liquid still contains solid particles such as gypsum in the practical application of the double-alkali desulfurization device, which causes serious scaling and blockage of system equipment and pipelines

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