Fuel and related compositions – Liquid fuels – Plant or animal extract mixtures or extracts of...
Reexamination Certificate
2011-01-18
2011-01-18
Carr, Deborah D (Department: 1621)
Fuel and related compositions
Liquid fuels
Plant or animal extract mixtures or extracts of...
C554S167000
Reexamination Certificate
active
07871448
ABSTRACT:
A system and method for the conversion of free fatty acids to glycerides and the subsequent conversion of glycerides to glycerin and biodiesel includes the transesterification of a glyceride stream with an alcohol. The fatty acid alkyl esters are separated from the glycerin to produce a first liquid phase containing a fatty acid alkyl ester rich (concentrated) stream and a second liquid phase containing a glycerin rich (concentrated) stream. The fatty acid alkyl ester rich stream is then subjected to distillation, preferably reactive distillation, wherein the stream undergoes both physical separation and chemical reaction. The fatty acid alkyl ester rich stream is then purified to produce a purified biodiesel product and a glyceride rich residue stream. Biodiesel may be further recovered from the glyceride rich residue stream, by further separation of and/or processing of glycerides/free fatty acids contained therein. The glycerin rich second liquid phase stream may further be purified to produce a purified glycerin product and a (second) wet alcohol stream. Neutralization of the alkaline stream, formed during the alkali-catalyzed transesterification process, may proceed by the addition of a mineral or an organic acid.
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Jackam John P.
Jones Jeffrey D.
Pierce Joel M.
Talley Richard H.
Carr Deborah D
Carter Ryan N.
Johnson Glenn
Seneca Landlord, LLC
LandOfFree
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