Patent ID: 11970445
Assignee: LG CHEM, LTD.
Field: Chemical engineering (Chemistry)
Classification: CPC C  B | IPC B  C

Claim 2:
3. The method for recovering an amide-based compound according to claim 1, wherein a content of water in total components discharged from the first outflow port located on the extraction region side in the column bottom region of the distillation column is 90 wt % or more, a content of the amide-based compound in total components discharged from the second outflow port in the column top region of the distillation column is 10 wt % or less, and a content of the amide-based compound in total components discharged from the fourth outflow port located on the distillation region side in the column bottom region of the distillation column is 90 wt % or more.