Coal-fired flue gas purification device

Abstract

The invention relates to a coal-fired flue gas purification device, and belongs to the field of coal-fired flue gas and pollutant purification. The coal-fired flue gas purification device comprises an inlet flue (1), an electric dust remover (2), a desulfurization tower (3), an electric mist eliminating device (4), a wet electric dust removal device (6), an outlet flue (13) and a chimney (14) which are sequentially connected with one another by pipelines. Wet electric dust removal anode plates (10) and wet electric dust removal cathode plates (9) which are connected with a high-frequency and high-voltage power supply (11) are arranged in the wet electric dust removal device (6); a water distribution frame (8) is arranged on the tops of the wet electric dust removal anode plates (10), and water distribution pipes (15) with water distribution slits (17) are arranged on the water distribution frame (8); continuous pits (16) are formed in the surface, which directly faces corresponding cathode lines, of each wet electric dust removal anode plate (10). The coal-fired flue gas purification device has the advantages that the concentration of particulate matters in coal-fired flue gas treated by the coal-fired flue gas purification device is lower than 4 mg / m<3>, the PM2.5 (particulate matter 2.5) is lower than 8 micro-g / Nm<3>, the content of Hg is lower than 1 micro-g / Nm<3>, and the content of SO3 is lower than 5 micro-g / Nm<3>; the coal-fired flue gas purification device is suitable for large-scale industrial application.

Description

Technical field: [0001] The invention relates to a coal-fired flue gas purification device, which belongs to the technical field of flue gas pollutant purification. technical background: [0002] The increasing haze weather in various parts of our country has brought immeasurable impact on people's life and health, so PM 2.5 It has aroused widespread concern in the society. PM 2.5 The main source of generation is the residues emitted by combustion in the process of daily power generation, industrial production, and automobile exhaust emissions. At present, 90% of my country's electric energy comes from thermal power generation, and thermal power generation and industrial production need to burn a large amount of coal. Coal-fired flue gas pollutants produced by coal-fired power plants and industrial boilers have become the main source of air pollution. [0003] With people's attention to the fine particulate matter (including PM 2.5 Dust, SO 3 Acid mist and aerosols, etc...

AI Technical Summary

Problems solved by technology

[0008] In view of the shortcomings of the above-mentioned existing coal-fired flue gas pollutant purification equipment, 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 coal-fired flue gas purification device; effectively solves 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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