Rectification device for preventing crystallization blockage in preparation of flunixin meglumine intermediate MTA

• Main Authors: XU JUNWEI, CHONG DAOHUANG, ZHU ZHENFENG, YANG SONGTAO, HE JUN, WANG HUI
• Format: Patent
• Language: Chinese; English
• Published: 13.03.2020
• Subjects: PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; TRANSPORTING

The utility model relates to a rectifying device for preventing crystallization blockage in preparation of a flunixin meglumine intermediate MTA. The device comprises a rectifying tower, the top of the rectifying tower is sequentially connected with a first-stage condenser and a second-stage condenser through pipelines, the bottom of the first-stage condenser and the bottom of the second-stage condenser are connected with the rectifying tower through pipelines respectively, the second-stage condenser is connected with a vacuum buffer tank through a pipeline, and the vacuum buffer tank is connected with a vacuum unit; the bottom of the primary condenser and the bottom of the secondary condenser are connected with a first receiving tank and a second receiving tank through pipelines; the first receiving tank and the second receiving tank are connected with a vacuum buffer tank through pipelines; pipelines connected among the rectifying tower, the primary condenser, the secondary condenser, the vacuum buffer tank