Device and method for large-scale production of N, N, N ', N'-tetraoctyl-3-oxoglutaramide

• Main Authors: GUO ANNAN, WANG JIAN, ZHENG DAXING, ZOU XIAOYU, NONG SHUYING, WANG YIDAN, WANG GUANGSHENG, MENG JINHONG, LI LIANSHUN
• Format: Patent
• Language: Chinese; English
• Published: 28.04.2023
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; METALLURGY; ORGANIC CHEMISTRY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; THEIR RELEVANT APPARATUS; TRANSPORTING

The invention relates to a device and a method for large-scale production of N, N, N ', N'-tetraoctyl-3-oxoglutaramide. The device comprises a reactor, an extractor, an intermediate storage tank, a distillation tower and a product tank which are sequentially connected through pipelines, the distillation tower comprises a rectifying section, a distillation section and a stripping section which are sequentially communicated from top to bottom, the rectifying section is connected with a refrigerating unit for providing a cold source, and the distillation section and the stripping section are connected with a constant-temperature water heater for providing a heat source. The method is based on the device and comprises the following steps: mixing the N, N-dimethylformamide solvent, diglycolic acid, di-n-octylamine, the alkaline additive and the condensing agent in the reactor for reaction, extracting in the extractor, and finally distilling and concentrating in the distillation tower to obtain N, N, N ', N'-tetrao