Process for production of biodiesel

US8871961B2 · kind B2 · utility

Assignee

• Air Liquide Global E&C Solutions Germany GmbH · DE

Inventors

• Eckhard Seidel · Frankfurt, DE
• Rudolf Boensch · Nackenheim, DE
• Norbert Palauschek · Idstein, DE
• Helmut Saft · Florstadt, DE

Key dates

• Filing date: Mar 2, 2011
• Grant date: Oct 28, 2014
• Expiry date: Aug 20, 2031

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P30/20
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A process for continuous production of biodiesel from vegetable oils or animal fats by transesterification with methanol or ethanol to give crude fatty acid alkyl esters, subsequent washing with water in a wash column to remove water-soluble impurities, subsequent drying by vaporization of the water content and subsequent removal of steryl glycosides by adsorption onto calcium bentonite, wherein the adsorption column(s) used is/are regenerated in a first step, for desorption of the steryl glycosides, by rinsing with a mixture consisting of fatty acid alkyl esters and methanol or ethanol, and in a subsequent second step, for removal of methanol residues, by rinsing with fatty acid alkyl esters or with gaseous nitrogen or carbon dioxide.