Patent ID: 11926608
Assignee: NANJING QUANKAI RESEARCH INSTITUTE OF BIOMATERIALS CO., LTD.
Field: Chemical engineering (Chemistry)
Classification: CPC C  B | IPC B  C

Claim 3:
4. The synthesis device for rapidly producing lactide at high yield according to claim 1, wherein the oligomer depolymerization system (III) comprises a depolymerization reactor (30), a depolymerization catalyst feeding pump (21), a depolymerization feed mixer (29), and a depolymerized heavy component discharging/circulating pump (31);
wherein, a depolymerization catalyst (20) and the purified product produced by the oligomer purification system (II) enter the depolymerization feed mixer (29) through the depolymerization catalyst feeding pump (21) for mixing at the same time, and then the mixture is fed from a side face of the depolymerization reactor (30);
the depolymerized heavy component discharging/circulating pump (31) is located on a discharging pipe at a bottom of the depolymerization reactor (30), and is connected to the depolymerization feed mixer (29) through a three-way valve, a heavy component produced in the depolymerization reactor (30) is returned to the depolymerization feed mixer (29) to be mixed with a reaction raw material, and then the mixture enters the depolymerization reactor (30) again for reaction; and a light component produced in the depolymerization reactor (30) is connected with a feeding pipe of the lactide purification system (IV) through a discharging port above a side face of the depolymerization reactor (30).