Pymellitic dianhydride recovery device

• Main Authors: WANG FEI, WANG YIMING, ZHANG TONGJUN, ZHANG YANLONG, CHEN LIZE, CHEN SIYU, WU QINGXIN, WU YIBEI, CHEN XUEZHENG, WANG JIYOU
• Format: Patent
• Language: Chinese; English
• Published: 11.03.2022
• Subjects: CHEMISTRY; HETEROCYCLIC COMPOUNDS; METALLURGY; ORGANIC CHEMISTRY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; TRANSPORTING

The pyromellitic dianhydride recovery device comprises a heating box, a heating plate is fixedly connected in the heating box, an evaporation tank is arranged in the heating box and arranged above the heating plate, the bottom of the evaporation tank abuts against the heating plate, a feeding port is formed in the upper portion of the evaporation tank, and a discharging port is formed in the lower portion of the evaporation tank. A valve is arranged in the feeding port, a filter screen is fixedly connected to the joint of the feeding port and the evaporation tank, an evaporation cover is arranged above the evaporation tank, a first pipeline is arranged in the evaporation cover and penetrates through the evaporation cover to be communicated with the interior of the evaporation tank, and the other end of the first pipeline is connected with a condenser. The other end of the condenser is connected with a second pipeline, and the second pipeline is connected with a liquid storage bottle in a sealed mode. Accordin