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Production of biodiesel fuels which are low in glycerin and sulfur

A technology of biodiesel and feed, which is applied in the production of biofuels, fuels, fatty acids, etc., can solve problems such as deterioration of transesterification

Inactive Publication Date: 2014-01-29
ENDICOTT BIOFUELS II
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, since the transesterification reaction usually requires the addition of an acid or base catalyst, the catalyst must first be neutralized to generate salts and soaps, making the transesterification worse
In addition, while transesterification results in the separation of fatty acid esters from triglycerides, it also results in the production of glycerol which must subsequently be separated from said fatty acid esters, glycerol, excess alcohol, salts and soaps

Method used

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  • Production of biodiesel fuels which are low in glycerin and sulfur
  • Production of biodiesel fuels which are low in glycerin and sulfur
  • Production of biodiesel fuels which are low in glycerin and sulfur

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Embodiment Construction

[0040] The present invention provides methods for producing fatty acid esters and / or biodiesel fuels with low glycerol, and optionally low sulfur content, from fatty acids and fatty acids treated with glycerol.

[0041] Biodiesel fuel contains esters of fatty acids, especially methyl esters. Generally, esters are formed from carboxylic acids, for example, according to the following reactions:

[0042]

[0043] Among them, R 1 is hydrogen or a monovalent organic group, and R 2 It is a monovalent organic group. As noted previously, fatty acid esters can also be produced by transesterification, whereby glycerides are reacted with alcohols in the presence of an acid or base catalyst to obtain esters and glycerol. The production of fatty acid esters by transesterification generally produces a product stream with salts and soaps, which is produced with acids and / or bases, and a significant concentration of unreacted glycerol. caused by the processing. The esterification of f...

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Abstract

This invention relates to methods for preparing alkyl ethers from glycerin by reactive distillation. For example, the present invention provides a method for the preparation of mono-, di- and tri-ethers of glycerin, either in the presence or absence of fatty acids, contaminants by reactive distillation using solid catalysts. Specific desirable final products according to the reactive distillation method provided herein include glycerin ethers and fatty acid esters of C4-C5 alcohols, such as for example, isobutanol, tert-butanol, and isoamyl alcohol.

Description

[0001] This application is the PCT international application PCT / US2008 / 056837 submitted on March 13, 2008, which entered the Chinese national phase on September 14, 2009. Production" is a divisional application of the invention patent application. [0002] Pursuant to U.S.C. 119(e), this application claims U.S. Provisional Application 60 / 894,724, filed March 14, 2007, U.S. Provisional Application 60 / 894,726, filed March 14, 2007 and Priority of U.S. Provisional Application 60 / 894,730. The content of each of the above applications is incorporated herein by reference. technical field [0003] The present invention relates to a process and apparatus for the production of carboxylic acid esters comprising biodiesel fuel from a feedstock containing fatty acids, glycerol-treated fatty acids and glycerol by reactive distillation. Specifically, in one embodiment, the present invention relates to the production of biodiesel fuel with low glycerol, water and sulfur content. Backgro...

Claims

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Application Information

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IPC IPC(8): C11C3/00C10L1/02
CPCC11C3/003C10L1/026Y02E50/13C07C41/09Y02E50/10Y02P20/10C07C43/13C07C43/135C07C43/10
Inventor W·D·摩根
Owner ENDICOTT BIOFUELS II
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