Process and device for recovering 2-mercaptobenzothiazole from cefotaxime acid mother liquor

The invention discloses a process and a device for recovering 2-mercaptobenzothiazole from a cefotaxime acid mother liquor, relates to the technical field of medical technology, can obtain high-purity active pharmaceutical ingredients and recover high-quality MBT through a simple process, can be applied to recovery of MBT from the cefotaxime acid mother liquor in industrial production, and can be applied to industrial production. And the content of 2-mercaptobenzothiazole in the cefotaxime acid is reduced by adjusting centrifugal washing and stirring processes of the cefotaxime acid. According to the technical scheme, the method is characterized by comprising the following steps: S1, adding a sodium hydroxide solution into a cefotaxime acid mother solution in a stirring kettle, and adjusting the pH value; s2, transferring the mixed solution obtained in the step S1 into a rectifying tower, heating, distilling out light components from the tower top, and leaving the liquid in the rectifying tower; s3, transferr