Patent ID: 11939286
Assignee: TIANJIN UNIVERSITY
Field: Organic fine chemistry (Chemistry)
Classification: CPC C  Y | IPC C

Claim 1:
2. The method according to claim 1, wherein a mixture containing ethyl acetate, a small amount of water and acetic acid in the tower kettle of the extracting and rectifying tower (401) enters the ethyl acetate tower (405) for rectifying; overhead vapor of the ethyl acetate tower (405) mainly consists of ethyl acetate and water and also contains a trace amount of vinyl acetate, condensate condensed by the ethyl acetate tower condenser (406) enters the ethyl acetate tower supercooler (407) to be further cooled and then fed to the ethyl acetate tower phase separator (408) for phase separation, a water phase obtained after phase separation refluxes, and an oil phase is discharged out of the system as an ethyl acetate impurity stream; and a main component in the tower kettle of the ethyl acetate tower (405) is acetic acid, one part returns to the extracting and rectifying tower (401) as the extractant, and the rest part returns to the acetic acid tower (201) of the former system for feeding.