Patent · US Expired

Method for pretreating crude oils and raw fats for the production of fatty acid esters

US6960673B2 · kind B2 · utility

5Cited by

4References

25Claims

0Family size

Assignee

Westfalia Separator GmbH · DE

Inventors

Karlheinz Brunner · Großkrotzenburg, DE
Rainer Frische · Frankfurt, DE
Rainer Ricker · Dietzenbach, DE

Key dates

Filing date	Nov 29, 2001
Grant date	Nov 1, 2005
Priority date	—
Expiry date	Dec 12, 2021

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC11C3/003
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A method for pretreating crude oils and fats for subsequent alkaline transesterification with primary and/or secondary alcohols. The raw oil or fat loaded with slimy substances is treated with a mixture used at 0.15 wt. % in relation to the oil or fat comprising an alcohol and concentrated acid, and preferably is subsequently rinsed with an alkaline glycerol phase arising from an alkaline transesterification reaction of the above-mentioned type. After the rinsing process, the glycerol phase which is loaded with slimy substances and soaps of free fatty acids is separated as a heavy phase of neutral oil liberated from free fatty acids.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.