Method for producing biodiesel using an immobilised catalyst
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United States of America Patent
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Nov 29, 2011
Grant Date -
Jan 14, 2010
app pub date -
Jul 20, 2007
filing date -
Jul 26, 2006
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Abstract
A method produces a fatty acid alkylester by transesterification of a fat or oil and an alcohol. The reaction is catalysed by a heterogeneous catalyst immobilized in a tubular reactor at a temperature between 260 and 420° C. and at a pressure higher than 5 bar. A mixture of the fat or oil and the alcohol is led in a continuous flow through the tubular reactor. The catalyst is preferably a metal oxide or a metal carbonate including an alkaline earth metal. The reaction takes place at reduced residence times and contact times compared to the prior art.
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