![ternary diagram blank acetic acid isopropyl ether and water ternary diagram blank acetic acid isopropyl ether and water](https://minio.scielo.br/documentstore/1678-4383/L4bSNQFpJL9y4VZ6NYT9C3L/fe6e6106f9543f1c946f136663e3081802e4a3e3.gif)
The extractive agent should boil higher than any of the close boiling liquids being separated and not form minimum azeotropes with them. When the compounds to be separated normally form an azeotrope, the proper agents will cause them to boil separately during extractive distillation and thus make possible a separation in a rectification column that cannot be done at all when no agent is present.
![ternary diagram blank acetic acid isopropyl ether and water ternary diagram blank acetic acid isopropyl ether and water](https://www.researchgate.net/profile/Abdelkrim-Merzougui-2/publication/221678941/figure/fig4/AS:715979000659969@1547714104503/Ternary-diagram-for-LLE-of-water-1-acetic-acid-2-dichloromethane-3-at-T.png)
Its presence on each plate of the rectification column alters the relative volatility of the close boiling compounds in a direction to make the separation on each plate greater and thus require either fewer plates to effect the same separation or make possible a greater degree of separation with the same number of plates. The extractive agent is introduced near the top of the column and flows downward until it reaches the stillpot or reboiler. This invention relates to a method for separating isopropyl acetate from isopropanol using certain higher boiling liquids as the extractive agent in extractive distillation.Įxtractive distillation is the method of separating close boiling compounds or azeotropes by carrying out the distillation in a multiplate rectification column in the presence of an added liquid or liquid mixture, said liquid(s) having a boiling point higher than the compounds being separated. This application is related to Application Ser. The method of claim 1 in which the extractive agent comprises a mixture of triethanolamine and N-methyl pyrrolidone. The method of claim 1 in which the extractive agent comprises a mixture of ethanolamine and N-methyl pyrrolidone.ĩ. The method of claim 1 in which the extractive agent comprises isopropanolamine.Ĩ. The method of claim 1 in which the extractive agent comprises methyl diethanolamine.ħ. The method of claim 1 in which the extractive agent comprises N-methyl ethanolamine.Ħ. The method of claim 1 in which the extractive agent comprises triethanolamine.ĥ. The method of claim 1 in which the extractive agent comprises diethanolamine.Ĥ.
![ternary diagram blank acetic acid isopropyl ether and water ternary diagram blank acetic acid isopropyl ether and water](https://www.researchgate.net/profile/Abdelkrim-Merzougui-2/publication/221678941/figure/fig5/AS:715979000672256@1547714104535/Ternary-diagram-for-LLE-of-water-1-acetic-acid-2-MIBK-3-at-T-29415.png)
The method of claim 1 in which the extractive agent comprises ethanolamine.ģ. A method for recovering isopropyl acetate from a mixture of isopropyl acetate, isopropanol and water which comprises distilling a mixture of isopropyl acetate, isopropanol and water in a rectification column in the presence of about one to two parts of an extractive agent per part of isopropyl acetate-isopropanol-water mixture, recovering isopropyl acetate and water as overhead product and obtaining the extractive agent and isopropanol from the stillpot, the extractive agent comprises at least one amino alcohol containing from two to six carbon atoms.Ģ.