Alkali and earth alkali metal glycerates for drying and deacidification of fatty acid esters

A technology of alkaline earth metal and glycerate, which is applied in the direction of fatty acid esterification, fat generation, metal alcohol preparation, etc., and can solve problems such as inappropriate

Inactive Publication Date: 2013-01-23
EVONIK DEGUSSA GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this step, although some purification of crude fatty acid alkyl esters is achieved, further work-up with adsorbents is still required
In addition, this method is not suitable for the deacidification of fatty acid alkyl esters

Method used

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  • Alkali and earth alkali metal glycerates for drying and deacidification of fatty acid esters

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0072] The content of alkali metal glycerate was determined by potentiometric titration. During this process, glycerate was dissolved in deionized water by stirring for 5 min and the solution was titrated to the equivalence point with 0.25 molar sulfuric acid.

[0073] The water content is determined according to DIN 51777 "Determination of water content by the Karl Fischer direct method". The solvent is methanol, and the detection is performed amperometrically at double platinum electrodes.

[0074] The soap content is determined by titration according to the standard method of the DGF (German Society for Fat Science), method C-III 15 (97) "Seife in Ölen und Fetten", published in "Deutsche Einheitsmethoden zur Untersuchung von Fetten, Fettprodukt, Tensiden und verwandten Stoffen". Here, samples are dissolved in ethanol or acetone and titrated with 0.1 molar hydrochloric acid against bromophenol blue as indicator. Alternatively, endpoints can be determined potentiometricall...

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Abstract

Provided is a composition comprising an alkali metal glycerate or an alkaline earth metal glycerate and glycerol, and a method for preparing the same. Also provided are methods for removing a fatty acid from a fatty acid-comprising glyceride or a fatty acid alkyl ester (deacidifying) or drying a glyceride or fatty acid alkyl ester, involving contacting a mixture of the fatty acid and the fatty acid-comprising glyceride or the fatty acid alkyl ester, or mixing the glyceride or fatty acid alkyl ester, with the composition.

Description

technical field [0001] The present invention relates to compositions comprising alkali metal glycerates and glycerol and their use for deacidification and drying of fatty acid esters. Background technique [0002] Fatty acid alkyl esters of monohydric alcohols have had important applications for some time in biodiesel, a replacement for fossil diesel based on renewable raw materials. [0003] The production of biodiesel is generally carried out by base-catalyzed transesterification of triglycerides (The Biodiesel Handbook, G. Knothe, J. van Gerpen, J. Krahl, eds. AOCS Press (2005); Biodiesel – The comprehensive handbook, M. Mittelbach , C. Remschmidt (2004); Bioresource Technology 2004, 92, 297; Applied Energy 2010, 87, 1083; Chimica Oggi / Chemistry today 2008, 26). [0004] For this transesterification, it is advantageous if the glycerides, especially triglycerides, used are as free as possible of water and fatty acids. The fatty acid neutralizes the basic catalyst, so a l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B3/06
CPCC07C31/30C11C3/003C10L1/026Y02E50/13C11B3/001C07C29/70C11B3/16C11B3/006Y02E50/10
Inventor J.鲁韦M.利希滕赫尔特M.弗兰克A.博伊
Owner EVONIK DEGUSSA GMBH
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