Wet type electric precipitation device and method for removing fine particulate matters in smoke desulfurized by wet process

The invention belongs to the technical field of environmental protection equipment, and particularly relates to a wet type electric precipitation device and a method for removing fine particulate matters in smoke desulfurized by a wet process. The wet type electric precipitation device comprises a casing, a smoke inlet end arranged at the upper part of the casing, a dust charging area arranged at the upper end of the smoke inlet end, a dust collecting area arranged in the middle in the casing, washing devices arranged above the dust collecting area, a smoke outlet area, an ash discharge area, a coagulation and agglomeration area and a secondary pre-charge area, wherein the smoke outlet area and the ash discharge area are arranged below the dust collecting area; a smoke turbulence device is arranged in the coagulation and agglomeration area; the washing devices comprise a continuous water film ash removal device and at least one stage of spraying ash removal device; the distance between a discharge electrode and a dust collection electrode is 150-350 mm; and an outlet flue forming an intersection angle of 3-15 degrees with the horizontal direction is arranged in the smoke outlet area. The invention further provides the method for removing the fine particulate matters. The method comprises steps as follows: 1), dust charging; 2), coagulation and agglomeration; 3), secondary pre-charging; 4), dust collection; and 5), mist removal. According to the device and the method, the dust removal efficiency is high, and the effect is good.