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Process for producing biodiesel

A technology of biodiesel and reaction products, which is used in fertilizers, biofuels, products, etc. made of biological waste

Inactive Publication Date: 2006-08-30
PETROLEO BRASILEIRO SA (PETROBRAS)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This excessively exceeds the current ASTM PS 121-99 limit of 0.02 wt%

Method used

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  • Process for producing biodiesel
  • Process for producing biodiesel

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Experimental program
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Embodiment

[0050] At ambient temperature, 1000 g of raw castor bean seeds (Ricinus Communis L) of the Brazilian variety called "Bull Heart" processed as described above were added to the reactor along with 800 g of ethanol and crushed under vigorous stirring until The reaction mass is a flowing homogeneous suspension.

[0051] Then, 40 g of a sodium alkoxide catalyst was incorporated into the mixture, and transesterification of the seeds was carried out at atmospheric pressure and a constant temperature of 50° C. for 1 hour under moderate stirring and reflux.

[0052] The reactor was then cooled and fed to 40°C and filtered to obtain 600 g of solid phase and 1240 g of filtrate, after distillation of said filtrate at atmospheric pressure, 680 g of crude ethanol condensate and 560 g of ester, glycerol and other by-products remaining in the still were recovered A liquid residue consisting of a mixture.

[0053] Once transferred to a decanter, where it was kept at an ambient temperature of ...

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Abstract

An integrated process is described for producing biodiesel from oleaginous seeds, preferably castor bean seeds, comprising a transesterification reaction where the seeds themselves react with anhydrous ethyl alcohol in the presence of an alkaline catalyst. The resulting ethyl esters are then separated by decantation and neutralized and used as fuel for diesel engines, co-solvents for diesel and gasoline mixtures with anhydrous or hydrated ethyl alcohol. The solid fractions may be used as fertilizers, for feeding cattle and as a raw material for producing ethyl alcohol.

Description

technical field [0001] The present invention relates to an integrated process for the production of biodiesel, ie, alkyl monoesters of long chain fatty acids, which are present in oilseeds, from vegetable oils for use as fuel or as fuel additives and economically viable by-products. More particularly, the present invention relates to a process for the production of biodiesel by transesterification, wherein instead of alcohol being reacted with castor bean-extracted oil, the castor bean seeds themselves are reacted with alcohol in the presence of a basic catalyst to obtain A fuel product consisting of ethyl monoesters of fatty acids present within these seeds. Glycerol is also obtained, a ricin-free starchy product that can be used in livestock food formulations and can also be used as a raw material for the production of ethanol or as a fertilizer, and finally castor bean hulls produced from castor bean shells that can be used as fertilizers mineral-rich products. Backgroun...

Claims

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Application Information

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IPC IPC(8): C11C3/04C10L1/02A23K1/14C10L1/19C11C3/10
CPCC11C3/003Y02E50/13C10L1/19A23K1/146C10L1/026A23K10/37C05F5/002Y02A40/20Y02E50/10Y02P20/10Y02P20/145Y02P60/87
Inventor C·N·哈利勒L·C·F·莱特
Owner PETROLEO BRASILEIRO SA (PETROBRAS)
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