Process for the continuous production of triacetin

US4381407A · kind A · utility

Assignee

• Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

• Norbert Bremus · Langenfeld, DE
• Gerhard Dieckelmann
• Lutz Jeromin · Hilden, DE
• Wolfgang Rupilius · Düsseldorf, DE
• Hartwig Schutt · Hilden, DE

Key dates

• Filing date: Jan 26, 1981
• Grant date: Apr 26, 1983
• Expiry date: Jan 26, 2001

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S203/06
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A process for the continuous production of triacetin consisting essentially of continuously charging liquid glycerol into a first liquid reaction area through which acetic acid vapors and water vapors flow, said liquid reaction area being divided into a number of separate individual areas through which liquid glycerol and liquid acetin reaction products flow in one direction and gaseous acetic acid and water flow in a countercurrent direction, continuously charging acetic acid vapor to a separate individual area where said liquid mixture has an OH number of less than 600, continuously separating a liquid mixture of acetins and water having an OH number of less than 600, continuously passing said liquid mixture into a second liquid reaction area, continuously adding thereto liquid acetic acid anhydride in an amount sufficient to react with water dissolved in said liquid mixture to form acetic acid and to react with monoacetin and diacetin present to form triacetin and continuously recovering triacetin.