Method for separating tetrahydrofuran from esterification wastewater

• Main Authors: WANG LEI, JIN ZUOHONG, ZHANG ZHIXUE, ZHANG JUNFENG, LIU CUNJIANG, LI HUABEI, SUN HELI, LI LANFANG, HAO NINGCHAO, FU HAIJIE
• Format: Patent
• Language: Chinese; English
• Published: 13.07.2021
• Subjects: CHEMISTRY; HETEROCYCLIC COMPOUNDS; METALLURGY; ORGANIC CHEMISTRY

The invention relates to the technical field of tetrahydrofuran recovery, and particularly discloses a method for separating tetrahydrofuran from esterification wastewater. The method for separating the tetrahydrofuran from the esterification wastewater comprises the following steps: sequentially carrying out normal-pressure rectification, pervaporation dehydration, light component removal, hydrogenation reduction and heavy component removal treatment on the esterification wastewater to obtain the tetrahydrofuran product. The method for separating tetrahydrofuran from esterification wastewater provided by the invention has the advantages of high recovery efficiency, low energy consumption, low cost, high product purity and high yield, polymer-grade tetrahydrofuran can be directly recovered, and the value and application range of the separated tetrahydrofuran product are greatly improved. 本发明涉及四氢呋喃回收技术领域，具体公开一种从酯化废水中分离四氢呋喃的方法。所述从酯化废水中分离四氢呋喃的方法为：对所述酯化废水依次进行常压精馏、渗透气化脱水、轻组分脱除、加氢还原和重组分脱除处理，得到四氢呋喃产品。本发明提供的从酯化废水中分离四