Preparation method of high-purity o-aminothiophenol

The invention relates to the technical field of preparation of o-aminothiophenol, in particular to a preparation method of high-purity o-aminothiophenol, impurity removal equipment involved in the method comprises a fixed frame, and a movable loading barrel for loading an orange-yellow solution is arranged at the bottom end of the inner side of the fixed frame; a plurality of limiting strips used for limiting the movable loading barrel are arranged at the positions, close to the bottom end, of the inner side of the fixed frame, the impurity removing mechanism is arranged in the movable loading barrel to rotate, an orange-yellow solution in the movable loading barrel can be driven to rotate, flow disturbing is conducted through an adjusting plate in the solution rotating process, and therefore the impurity removing effect is improved. The solution can not rotate in the movable loading barrel in a vortex mode, the impurity removal mechanism can move in the vertical direction in the rotating process by being mat