Production of biodiesel and glycerin from high free fatty acid feedstocks
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United States of America Patent
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Oct 5, 2010
Grant Date -
Dec 6, 2007
app pub date -
Jan 26, 2004
filing date -
Jan 27, 2003
priority date (Note) -
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Abstract
A system and method for converting a high free fatty acid grease feedstock to biodiesel. The process comprises a glycerolysis reaction to convert free fatty acids to glycerides and a base catalyzed transesterification reaction to produce fatty acid methyl esters and glycerin in the absence of solvents. In preferred embodiments, both glycerin and methanol are recycled. The process can process a feedstock containing up to 100 percent free fatty acid content to produce biodiesel and glycerin with minimal waste generation.
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