| 摘要 |
A method of separating cyclohexene, comprising the steps of (a) performing distillation separation of a solution of mixture containing cyclohexene, cyclohexane and benzene using N,N-dimethylacetamide as an extraction solvent; and (b) feeding at least portion of a first column bottom liquid resulting from separation of cyclohexene, cyclohexane and benzene from the solution of mixture in the step (a) to an extraction solvent purification column, drawing an azeotropic mixture of cyclohexyl acetate and N,N-dimethylacetamide from the top of the extraction solvent purification column outside the system and recycling a second column bottom liquid of the extraction solvent purification column to the step (a). |
