Refining production line and method of 1, 3-propylene glycol

• Main Authors: PENG HUAFENG, FENG LIANFANG, JIA ZHENYU, ZHANG BAOYONG, LIU MINGXUAN
• Format: Patent
• Language: Chinese; English
• Published: 08.06.2021
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; CHEMISTRY; METALLURGY; ORGANIC CHEMISTRY

The invention relates to the field of chemical engineering, and discloses a refining production line and method of 1, 3-propylene glycol, the refining production line and the refining process are designed by aiming at different characteristics of complex components contained in a 1, 3-propylene glycol crude product solution prepared by a chemical method, high-purity (99.5% or above) 1, 3-propylene glycol can be separated from the crude product solution, energy and materials can be recycled, remarkable energy-saving and consumption-reducing effects are achieved, and loss of 1, 3-propylene glycol is reduced, and the final product yield is increased. 本发明涉及化工领域，公开了一种1,3-丙二醇的精制生产线及方法，本发明针对化学法制备的1,3-丙二醇粗产品溶液中含有的复杂组分的不同特性，设计了一条精制生产线及精制工艺，不仅能够从粗产品溶液中分离得到高纯度（99.5%以上）的1,3-丙二醇，并且还能够实现能量、物料的循环利用，达到了显著的节能降耗效果，同时减少了1,3-丙二醇流失，提高了最终的产品产率。