Dedusting and desulfuration integrated device for smoke and application of integrated device

Abstract

The invention discloses a dedusting and desulfuration integrated device for smoke and an application of the integrated device. The device comprises a duster, a cooling and humidifying tower, a desulfuration tower and a water washing liquid storage component, wherein the duster is communicated with the middle lower part of the cooling and humidifying tower; the top of the cooling and humidifying tower is connected with the bottom of the desulfuration tower; the water washing liquid storage component is connected with the top of the desulfuration tower and the middle upper part and the middle lower part of the cooling and humidifying tower; the water washing liquid storage component comprises a clean water pool and a plurality of acid liquor pools; the acid liquor pools are different in concentration; acid liquor in the acid liquor pool with the maximum concentration is communicated with the cooling and humidifying tower. According to the dedusting and desulfuration integrated device for the smoke, the acid liquor is used for spraying of the cooling and humidifying tower, the concentration of the water washing acid liquor is reduced, the washing frequency and acid pool number are reduced, the regeneration time, energy consumption and once input cost are reduced, the acid liquor is used for the spraying of the cooling and humidifying tower and exchanges heat with the smoke, the hot acid liquor is used for cleaning an active carbon absorption layer, the regeneration effect of active carbon can be improved, and scaling can be slowed down.

Description

technical field [0001] The invention relates to an integrated device for dust removal and desulfurization of flue gas and its application. Background technique [0002] The country has increasingly strict requirements for flue gas desulfurization and dust removal of many small and medium-sized boilers, and the existing methods can no longer meet the needs of relevant laws and regulations. [0003] Most of the small and medium-sized boilers owned by our country use wet technology for desulfurization. The desulfurization process is complicated, requires an automatic control system, and requires multiple people to operate; the cost of desulfurization agent is high; unstable working conditions are prone to occur, resulting in low actual desulfurization efficiency and high consumption of desulfurization agent. , increased by-products, pipeline blockage, and increased operating costs. [0004] Many small and medium-sized boilers use water film or leaching technology to remove dus...

AI Technical Summary

Problems solved by technology

[0002] The country has increasingly strict requirements for flue gas desulfurization and dust removal of many small and medium-sized boilers, and the existing methods can no longer meet the requirements of relevant laws and regulations.

[0003] Most of the small and medium-sized boilers owned by our country use wet technology for desulfurization. The desulfurization process is complicated, requires an automatic control system, and requires multiple people to operate; the cost of desulfurization agent is high; unstable working conditions are prone to occur, resulting in low actual desulfurization efficiency and large consumption of desulfurization agent. , increased by-products, blocked pipelines, and increased operating costs

[0004] Many small and medium-sized boilers use water film or leaching technology to remove dust, and the dust emission concentration is 300-400mg / m 3 Among them, the water consumption is large, the sedimentation tank and other areas occupy a large area, and there are many organic particles in the flue gas of some boilers. The existing wet dust removal equipment or desulfurization supporting equipment cannot meet the dust removal requirements; the dust removal wastewater contains a large amount of f - , heavy metal ions and other impurities, direct discharge will cause secondary pollution to the environment

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