首页>
外国专利>
Method for the continuous purification by distillation of 1,2-propylene glycol that accumulates during the synthesis of propylene oxide without coupling products
Method for the continuous purification by distillation of 1,2-propylene glycol that accumulates during the synthesis of propylene oxide without coupling products
展开▼
机译:通过蒸馏连续合成1,2-丙二醇而在不偶联产物的情况下积累的1,2-丙二醇的蒸馏方法
展开▼
页面导航
摘要
著录项
相似文献
摘要
The invention relates to a continuously operated process for the purification by distillation of the 1,2-propylene glycol formed as by-product in the synthesis of propylene oxide, wherein the mixture formed in the synthesis which contains the 1,2-propylene glycol is separated in a dividing wall column into low-, intermediate- and high-boiling fractions and the 1,2-propylene glycol is taken off as intermediate boiler at the side offtake of the column.
展开▼