首页>
外国专利>
A CONTINUOUSLY OPERATED DISTILLATIVE PURIFICATION OF 1,2-PROPYLENE GLYCOL FORMED IN THE COPRODUCT-FREE SYNTHESIS OF PROPYLENE OXIDE
A CONTINUOUSLY OPERATED DISTILLATIVE PURIFICATION OF 1,2-PROPYLENE GLYCOL FORMED IN THE COPRODUCT-FREE SYNTHESIS OF PROPYLENE OXIDE
展开▼
机译:连续操作精馏纯化无副产物环氧丙烷的1,2-丙二醇
展开▼
页面导航
摘要
著录项
相似文献
摘要
: 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 1,2.propylene glycol is isolated directly from a wastewater stream obtained in the synthesis of propylene oxide and said wastewater stream containing the 1,2-propylene glycol is separated in a dividing wall colunm into low-, intermediate- and high.boiling fractions and the 1,2- propylene glycol is taken off as intermediate boiler at the side offiake of the column
展开▼