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.