Flue gas purifier

The utility model discloses a flue gas purifier, which relates to the technical field of steel pipe processing and comprises a dedusting barrel fixedly connected to the upper surface of a bottom plate, the upper end wall of the dedusting barrel is provided with a gas outlet pipe, and the lower end wall of the dedusting barrel is provided with a dust inlet pipe; the two second partition plates are fixedly connected to the inner wall of the dust removal barrel, and a vertical cooling channel is formed by the two second partition plates and the dust removal barrel; the two first partition plates are fixedly connected to the inner wall of the dust removal barrel, and the two second partition plates are arranged between the two first partition plates; the connecting plate is fixedly connected to the upper ends of the two first partition plates; the cooling pipe is fixedly connected into the cooling channel; the plurality of spraying pipes are fixedly connected to the inner wall of the spraying channel respectively