| 摘要 |
FIELD: organic chemistry, chemical technology. ^ SUBSTANCE: invention relates to technology for producing phenol and acetone by cumene method, in particular, to a stage for separating cleavage products of alkylaryl hydroperoxide. Method involves separating a mixture of cleavage products for at least three fractions in a single distillation step by charging the mixture of cleavage products into lateral section of fractionating column, removal the first ketone-containing fraction through the upper part of fractionating column, removal of the second fraction containing substituted or unsubstituted phenol through the bottom part of column, and removal of the third fraction containing unreacted mono-, di- and/or trialkyl-substituted benzene and hydroxyketone as a side flow. The side outlet channel of the flow is located above the site for charging the mixture of cleavage products in fractionating column. The first fraction contains at least 75 wt.-% of ketone containing in the cleavage product before carrying out the distillation stage. Invention provides improvement of economy indices of the process due to reducing material and energetic consumptions and enhancing purity degree of final products. ^ EFFECT: improved method for treatment. ^ 21 cl, 2 dwg |
