Dosing device for wet desulphurization

The utility model relates to a chemical feeding device for wet desulphurization, which comprises a desulphurization tank and further comprises a cylindrical chemical feeding box which is arranged in the desulphurization tank and can rotate in the vertical direction, a plurality of chemical feeding hole groups which are arranged at the bottom of the chemical feeding box and are arranged along the circumferential direction, and each chemical feeding hole group comprises at least two chemical feeding holes. The at least two dosing holes are arranged along the radial direction of the dosing box; the baffles are arranged in the circumferential direction of the dosing box and can synchronously slide in the radial direction of the dosing box, and the multiple dosing hole sets correspond to the baffles in a one-to-one mode. The stirring device is driven by the rotation of the dosing box to rotate synchronously, so that medicaments and liquid substances are stirred while dosing is realized, and different numbers of do