Glycerol distillation process

US4655879A · kind A · utility

Assignee

• Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

• Rolf Brockmann · Bensberg, DE
• Lutz Jeromin · Hilden, DE
• Wilhelm Johannisbauer · Erkrath, DE
• Helmut Meyer · Hilden, DE
• Otto Michel · Langenfeld, DE
• Juergen Plachenka · Mettmann, DE

Key dates

• Filing date: Oct 26, 1984
• Grant date: Apr 7, 1987
• Expiry date: Oct 26, 2004

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S203/20
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

An improved process for purification of glycerol obtained from natural sources comprising alkalizing a glycerol-containing crude mixture in the presence of air for oxidation, evaporating the mixture in a thin-layer evaporator with redistillation of the residue, rectification and reevaporation in a packed column characterized by low-pressure-loss plates with a falling-film evaporator designed for internal and external partial condensation and to separate off unwanted constituents of the mixture, bleaching the product with activated carbon and separating the bleach in known manner.