Process for the non-degenerative distillation of fatty acids

US4595461A · kind A · utility

Assignee

• Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

• Lutz Jeromin · Hilden, DE
• Wilhelm Johannisbauer · Erkrath, DE
• Klaus Thorausch · Goldkronach, DE
• Franjo Skrapac · Perth, AU
• Helmut Hartmann · Cologne, DE
• Karl-Heinz Hentschel · Krefeld, DE
• Otto Michel · Langenfeld, DE

Key dates

• Filing date: Apr 11, 1984
• Grant date: Jun 17, 1986
• Expiry date: Apr 11, 2004

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S203/90
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A process for the nondegenerative distillation of C.sub.6 -C.sub.24 -fatty acids, of the type obtained by splitting natural fats and oils or by synthetic processes, such as for example the oxidation of paraffins, the crude product is thermally dried under reduced pressure, the dried and heated crude product is subjected to fractional evaporation in falling-film evaporators, optionally in the presence of superheated steam, and the various vapor fractions are deposited in condensers. The thermal drying process is conducted at a temperature of 60.degree.-80.degree. C. and a pressure of 90-100 mbars. The de-watered crude product is fractionated in a film-forming evaporator and, after distillation, passes to a rectification column which condenses the low boiling constituents as the main runnings.