Blast furnace gas dechlorination tower

The utility model discloses a blast furnace gas dechlorination tower which comprises a dechlorination tower body, a fixing ring and a tower cover, the fixing ring is fixed at the top end of the dechlorination tower body, fixing mechanisms are arranged at the two ends of the bottom of the fixing ring, clamping grooves are formed in the two ends of the top of the tower cover, and the tower cover is fixed on the fixing ring through the two fixing mechanisms. A spraying mechanism is arranged in the dechlorination tower body; the fixing mechanism comprises a connecting block, a threaded rod and a nut. The threaded rod is fixed to one end of the bottom of the fixing ring. The two threaded rods are sleeved with the two connecting blocks respectively, meanwhile, the top ends of the two connecting blocks are clamped into the two clamping grooves respectively, then the two nuts are rotated to move downwards, jacking force is applied to the two connecting blocks in the downward moving process of the two nuts, and the tw