Wet flue gas demisting and water-collecting integrated device

Abstract

The invention discloses a wet flue gas demisting and water-collecting integrated device which comprises a desulfurizing tower. A demisting and water-collecting area is arranged in the desulfurizing tower, a desulfurizing spraying unit is arranged below the demisting and water-collecting area, a plurality of condensers are arranged in the demisting and water-collecting area, a turbulence plate is arranged below each condenser, and a liquid accumulation layer is arranged between the demisting and water-collecting area in the desulfurizing tower and the desulfurizing spraying unit; a cooling tower is arranged outside the desulfurizing tower, a low-temperature condensate supply port of the cooling tower is connected with a condensate inlet at the upper end of each condenser through a condensing pump in a communicated manner, and a condensate outlet of each condenser is connected with a condensate return port of the cooling tower through a pipeline in a communicated manner. By adopting thedevice, heat exchange coefficient in the process of flue gas condensing can be improved effectively, humidity of discharged flue gas is lowered, and moisture carried by the flue gas is recycled; eachcondenser is cleaned by utilizing a water film formed by condensing of condensate liquid on the surface in the process of condensing, so that size and running energy consumption of a flue gas condensing device are reduced substantially.

Description

technical field [0001] The invention relates to the field of resource and environmental protection, in particular to an integrated device for removing mist and collecting water from wet flue gas. Background technique [0002] Most domestic coal-fired power plants and other industrial flue gases have undergone wet desulfurization purification treatment before discharge. The tail gas discharge temperature of the wet desulfurization device is 45°C-55°C, which is saturated wet flue gas. The flue gas contains a large amount of water vapor and carries a large amount of residual soluble salts, SO 3 , gel dust, particulate matter, etc. The high-temperature and wet flue gas enters the atmosphere and exchanges heat with the low-temperature ambient air. The water vapor condenses rapidly to form a large number of condensed water droplets, resulting in a more obvious white smoke phenomenon. A large number of white smoke plumes not only cause visual pollution, but also increase the dens...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the technical problems in the background technology, and to provide an integrated device for demisting and water collection of wet flue gas. The gaseous water is converted into liquid water and recycled, and the self-cleaning of the condenser is realized in the process of condensed water recovery, which effectively solves the problems of large resistance and high operating cost of the existing technology, and can also reduce the dust and SO in the flue gas. 2 Collaborative removal of pollutants such as

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