MULTISTAGE SEPARATION OF QUINOLINE AND ISO-QUINOLINE BY DISSOCIATION EXTRACTION

The separation of quinoline and iso-quinoline by dissociation extracti on has been studied using toluene and aqueous hydrochloric acid as sol vents. A laboratory scale multistage countercurrent mixer-settler unit was employed. Details are presented for the design and operation of t his equipment. The results for the separation of the quinoline and iso -quinoline mixture using a ten stage extractor are presented. Single s tage equilibrium data and equilibrium equations reported previously ha ve been used to develop a stage to stage calculation procedure and app lied to determine flow rates and conjugate phase compositions in a ten stage unit Experimental and calculated results for the concentrations of quinoline and iso-quinoline are compared and found to give good ag reement.