Downward-spraying and internal-positive-pressure type desulfurization and dust removing equipment

The utility model discloses downward-spraying and internal-positive-pressure type desulfurization and dust removing equipment. The downward-spraying and internal-positive-pressure type desulfurization and dust removing equipment comprises a tower body, wherein the upper end of the tower body is opened; the tower body comprises a spraying chamber and at least one cyclone chamber which are connected from bottom to top; the spraying chamber is internally provided with a horizontal sieving mesh; a sprayer is arranged under the sieving mesh; an air inlet is formed in the side wall of the spraying chamber under the sprayer, and the side wall opposite to the air inlet is provided with a water outlet; a cyclone impeller is fixed in the cyclone chamber; a circle of water receiving groove is formed in the side wall of the cyclone chamber above the cyclone impeller; a water discharging port is formed in the bottom of the water receiving groove. The downward-spraying and internal-positive-pressure type desulfurization an