Flue gas purifying device and application

Abstract

The invention relates to a flue gas purifying device and an application and belongs to the field of flue gas pollutant purification. The flue gas purifying device comprises an inlet flue (1), an electric precipitator (2), a desulfurizing tower (3), an electric defogging device (4), a wet type electric precipitation device (6), an outlet flue (13) and a chimney (14), all of which are sequentially connected through pipelines. A wet type electric precipitation anode plate (10) and a wet type electric precipitation cathode wire (9) which are connected with a high-frequency high-voltage power source (11) are arranged in the wet type electric precipitation device (6). The top of the wet type electric precipitation anode plate (10) is provided with a water distribution frame (8), and a water distribution pipe (15) with a water distribution slit (17) is arranged on the water distribution frame (8). The anode plate (10) is provided with parallel vertical strips (16). The concentration of particulate matter in flue gas treated through the device is smaller than 5 mg / m<3>, the concentration of PM2.5 is smaller than 10 ug / Nm<3>, the concentration of Hg is smaller than 1 ug / Nm<3>, and the concentration of SO3 is smaller than 5 ug / Nm<3>. The flue gas purifying device is suitable for being industrially applied on a large scale.

Description

Technical field: [0001] The invention relates to a flue gas purification device and application, and belongs to the technical field of flue gas pollutant purification. Background technique: [0002] The increasing number of haze weather in various parts of our country has brought an immeasurable impact on people's life and health, and PM2.5 has caused widespread concern in society. The main source of PM2.5 is the residues emitted from combustion in the process of daily power generation, industrial production, and automobile exhaust emissions. At this stage, 90% of my country's electricity comes from thermal power generation, and thermal power generation and industrial production require the burning of a large amount of coal. The flue gas pollutants produced by coal-fired power plants and industrial boilers have become the main sources of air pollution. [0003] With people’s attention to fine particulate matter (including PM2.5 dust, SO2) in thermal coal-fired power plants and ind...

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Problems solved by technology

[0008] In view of the shortcomings of the existing flue gas pollutant purification equipment mentioned above, especially the problems that the anode plate of the wet electrostatic precipitator is easily corroded, scaled, damaged, and unable to form a uniform wet film, which leads to unstable performance, the present invention provides a Flue gas purification device and application; effectively solve the problem of PM2.5 dust, SO 3 Pollutants such as acid mist and aerosol cannot run stably for a long time and can not be removed deeply

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