Deep condensation demisting system using flue gas waste heat

Abstract

The invention discloses a deep condensation demisting system using flue gas waste heat. The deep condensation demisting system using flue gas waste heat comprises a generation chamber, a desulfurization tower, and an evaporating chamber which are connected successively, and also comprises a condenser and an absorbent; a waste heat refrigeration cycle system is composed of the condenser and the absorbent between the generation chamber and the evaporating chamber; a generation heat exchanger is arranged in the generation chamber, flue gas is driven to pass through the generation heat exchanger,the chamber of the generation chamber is charged with a refrigerant-absorbent solution; an evaporation heat exchanger is arranged in the evaporating chamber, and supersaturated water vapor in flue gasis eliminated and flue gas temperature is reduced in the evaporation heat exchanger. According to the deep condensation demisting system, industrial low quality waste heat is adopted to prepare a cold source, the adaptability is high, the stability is high, influence by the seasons is low, the prepared cold energy can be used for deep condensation of desulphurization wet flue gas, chimney demisting white plume eliminating effects are achieved, and the deep condensation demisting system can be widely used in power station boiler and industrial boiler chimney moisture smoke plume treatment.

Description

technical field [0001] The invention relates to the technical field of power station boiler and industrial boiler chimney smoke plume treatment, in particular to a deep condensation defogging system utilizing waste heat of flue gas. Background technique [0002] In response to the national environmental protection requirements of coal-fired power plants, power plant boilers or industrial boilers usually desulfurize and denitrify the flue gas before discharging it to the chimney. Since most of the wet desulfurization methods currently used, the supersaturated wet flue gas discharged to the chimney. The flue gas is directly discharged into the atmosphere through the chimney, and is in contact with the ambient air with a lower temperature. During the cooling process of the flue gas, the supersaturated water vapor contained in the flue gas condenses into water droplets, which refracts and scatters the light. The outlet forms a misty white or gray plume. [0003] The formation ...

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Problems solved by technology

[0007] However, the above-mentioned technical solutions still have the defects of insufficient fog removal, poor energy saving and environmental protection effects, and low energy utilization rate.

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