Method of making alkyl esters using glycerin
First Claim
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1. A method of making an alkyl ester comprising the following steps:
- providing an oil source, the oil source including free fatty acids or glycerides;
providing a glycerol source of at least 0.3 equivalents;
contacting the glycerol source and the oil source for a sufficient time for effective conversion of the free fatty acids and the glycerides into a mixture of mono-, di-, and tri-glycerides;
providing an alcohol in an excess between about 1.0 equivalents to about 10 equivalents;
reacting the mixture of glycerides with the alcohol for an effective conversion of the glycerides into fatty acid alkyl esters; and
recovering the fatty acid alkyl esters.
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Abstract
A method for making alkyl esters (e.g., methyl ester), such as biodiesel, from an oil source is described. The method involves converting the free fatty acids of the oil source into a mixture of mono-, di-, and tri-glycerides and subsequently transesterifying the newly formed glycerides as well as the originally present glycerides into fatty acid alkyl esters.
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Citations
14 Claims
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1. A method of making an alkyl ester comprising the following steps:
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providing an oil source, the oil source including free fatty acids or glycerides; providing a glycerol source of at least 0.3 equivalents; contacting the glycerol source and the oil source for a sufficient time for effective conversion of the free fatty acids and the glycerides into a mixture of mono-, di-, and tri-glycerides; providing an alcohol in an excess between about 1.0 equivalents to about 10 equivalents; reacting the mixture of glycerides with the alcohol for an effective conversion of the glycerides into fatty acid alkyl esters; and recovering the fatty acid alkyl esters. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification