Method of separating mixtures of fatty substances

US3950371A · kind A · utility

Assignee

• Henkel u. Cie GmbH

Inventors

• Lutz Jeromin · Hilden, DE
• Norbert Bremus · Langenfeld, DE
• Georg Friederici
• Peter Peiffer

Key dates

• Filing date: Apr 8, 1974
• Grant date: Apr 13, 1976
• Expiry date: Apr 8, 1994

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C11B7/0091
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A method for separating fatty substance mixtures into components of different melting points by the "Rewetting or Hydrophilization Process," with the heat removal necessary for cooling and crystallizing higher melting fatty substance fractions being obtained essentially by vacuum evaporation of an aqueous, non-surface-active electrolyte solution in direct contact with the fatty substance mixture. PAC THE PRIOR ART The separation of fatty acid mixtures or of fatty acid ester mixtures into components of different melting points by a wetting agent process is known from U.S. Pat. No. 2,800,493, July 23, 1957, Stein et al. This process has become known as the "Rewetting or Hydrophilization Process." According to this patent, a mixture of solid and oily fatty substance particles is transformed by means of a wetting agent solution, optionally containing non-surface-active electrolyte, into a dispersion of separate solid and oily fatty substance particles. This dispersion is separated by means of solid jacket centrifuges into an oily phase and an aqueous phase containing the solid fatty substance particles in dispersion. The heat removal necessary for the crystallization of the solid fatty…