Production of biodiesel

a biodiesel and process technology, applied in the field of biodiesel production process, can solve the problems of unviable process economics, large quantity of residual acid-water produced by processes, and over-all was

Inactive Publication Date: 2006-10-12
RESITEC PARTICIPACOES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Accordingly, because of the importance of animal and vegetable oils as food, the use of animal and vegetable oils in the energy matrix as raw material for the manufacture of biodiesel results in an overall waste.
However, these processes produce a great quantity of residual acid-water due to the acidulation of the soapstock with sulfuric acid.
The high cost of the treatment of the effluent water coming from the acidulation of the soapstock makes the process economically unviable.
The treatment of this residual effluent is an extremely complicated problem from an environmental point of view.
The problem is technically difficult to solve because of the water's high content of sodium sulfate and the high BOD resulting from the gums, lecithin, and other organic impurities.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0063] About 1 kg of refinery soapstock, with 65% moisture content, obtained from refining soy oil, was dissolved in about 5 kg of ethyl alcohol and saponified under reflux, in the presence of about 40 g of sodium hydroxide solution / 50% of concentration. The product was then heated at atmospheric pressure until the alcohol began to boil and reflux back to the reacting medium, at a temperature around 65° C. to 90° C. The reaction was performed for about 30 to 90 minutes, when substantial oil / triglycerides present in the refining soapstock were converted into sodium soap. The alcoholic solution was then filtered to separate the organic material, mainly composed of lecithin and gums that, under the conditions above, do not react and are not soluble; about 107.8 g of lecithin and gums were obtained. This organic contaminant is present as a crystalline material.

[0064] The filtered lecithin and gums were then dried.

[0065] The alcoholic solution was again heated under the same reflux con...

example 2

[0070] About 1 kg of refinery soapstock, with 65% moisture content, obtained from refining of soy oil, was diluted in about 5 kg of methyl alcohol and saponified under reflux, in the presence of about 40 g of sodium hydroxide solution / 50% concentration. The product was then heated at atmospheric pressure until the point where the alcohol began to boil and reflux back to the reacting medium, at a temperature around 65° C. to 90° C. The reaction was performed for about 30 to 90 minutes, when substantial triglycerides present in the refining soapstock were converted into sodium soap. The alcoholic solution was then filtered to separate the organic material, mainly composed of lecithin and gums that, under the conditions above, did not react and are not soluble; about 109 g of lecithin and gums were obtained. This organic contaminant is present, after filtration, as a crystalline material.

[0071] The filtered lecithin and gums were then dried.

[0072] The alcoholic solution was heated un...

example 3

[0077] About 1 kg of refinery soapstock, with 65% moisture content, obtained from refining soy oil, was dissolved in about 5 kg of ethylic alcohol and saponified under reflux, in the presence of about 40 g of sodium hydroxide solution / 50% of concentration. The product was then heated at atmospheric pressure until the alcohol began to boil and reflux back to the reacting medium, at a temperature around 65° C. to 90° C. The reaction was performed for about 30 to 90 minutes, when substantial oil / triglycerides present in the refining soapstock were converted into sodium soap. The alcoholic solution was then filtered to separate the organic material, mainly composed of lecithin and gums that, under the conditions above, do not react and are not soluble; about 109 g of lecithin and gums were obtained. This organic contaminant is present as a crystalline material.

[0078] The filtered lecithin and gums were then dried.

[0079] The alcoholic solution was again heated under the same reflux con...

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Abstract

A process for the production of biodiesel is disclosed. In a preferred embodiment, the process is based on the production of biodiesel using refinery soapstock where the process is performed in an alcoholic medium resulting in the insolubility of certain byproducts. Other valuable products can also be obtained from the process.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS [0001] This application claims priority under 35 U.S.C. §119(e) to U.S. Provisional Application No. 60 / 655,458, filed Feb. 23, 2005, and Brazilian Patent Application No. 2004000005705, filed Dec. 20, 2004, which are incorporated herein by reference in their entirety.BACKGROUND OF THE INVENTION [0002] 1. Field of the Invention [0003] The present invention relates to a process for the production of biodiesel using soapstock. [0004] 2. Description of the Related Art [0005] Biodiesel is a clean burning alternative fuel, produced from domestic, renewable resources. Biodiesel is simple to use, biodegradable, and nontoxic. Biodiesel is comprised of mono-alkyl esters of long chain fatty acids. These mono-alkyl esters of long chain fatty acids have been derived from vegetable oils or animal fats. [0006] The processes used today to produce the methyl or ethyl esters of fatty acids start from animal or vegetable oils (triglycerides), an esteemed material...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): C10L1/18
CPCC01D5/00C01D5/02C10G2300/1011Y02E50/13C11B13/02C11C3/003C10L1/026Y02E50/10Y02P30/20Y02W30/74
Inventor ROHR, RODOLFOROHR, RAUL
Owner RESITEC PARTICIPACOES
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