Patent ID: 11939278
Assignee: LG CHEM, LTD.
Field: Organic fine chemistry (Chemistry)
Classification: CPC C | IPC C

Claim 0:
1. A method of producing an oligomer, the method comprising:
supplying a monomer stream including a monomer and a solvent stream to a reactor to perform an oligomerization reaction using the monomer to produce a reaction product including an oligomer and a by-product, wherein the by-product comprises a polymer;
supplying a discharge stream of the reactor to a separation device, and supplying an upper discharge stream of the separation device including an unreacted monomer to the reactor and supplying a lower discharge stream of the separation device to a settling tank;
settling the polymer in the settling tank and removing the polymer, and supplying the lower discharge stream of the separation device from which the polymer is removed to a high-boiling point separation column;
removing a high-boiling point material from a lower discharge stream of the high-boiling point separation column and supplying an upper discharge stream of the high-boiling point separation column including the oligomer to a solvent separation column; and
separating a solvent and the oligomer in the solvent separation column,
wherein layer separation into an upper layer liquid including the solvent and a lower layer liquid including the oligomer is performed in the settling tank, and an upper layer liquid stream is directly supplied to the solvent separation column and a lower layer liquid stream is supplied to the high-boiling point separation column.