Ultra-low emission device for primary flue gas dust of large converter

The utility model discloses a primary flue gas dust ultralow emission device for a large converter, and belongs to the technical field of primary dust removal and purification for converter steelmaking. Comprising a primary purification header pipe (1), a first flue gas fine dust removal tower (12) inlet gas guide elbow (11), a first flue gas fine dust removal tower (12), a first flue gas fine dust removal tower outlet branch pipe 13, a second flue gas fine dust removal tower (22) inlet pipe gas guide elbow (21), a second flue gas fine dust removal tower (22), a second flue gas fine dust removal tower (22) outlet branch pipe (23), a first flue gas fine dust removal tower (12) and a second flue gas fine dust removal tower (22), an outlet gathering pipe (3) and a diffusion chimney (4). And the primarily purified primary flue gas of the converter passes through respective fine dust removal towers and then enters a diffusion chimney through a gathering pipe to be discharged at high altitude. The method has the ad