Biodiesel production method

Details Biodiesel production method Biodiesel production method

2007-12-21

2011-10-04

Carr, Deborah D (Department: 1622)

Organic compounds -- part of the class 532-570 series

Organic compounds

Fatty compounds having an acid moiety which contains the...

C554S167000

Reexamination Certificate

active

08030505

ABSTRACT:
A process for producing lower alkyl esters of higher fatty acids from an oil phase and lower alcohols, in a catalytic transesterification process in the presence of an alkaline catalyst. A reaction mixture is provided by mixing oil-phase fatty acids with a solution comprising methanol and an alkaline catalyst comprising sodium methylate. The transesterification reaction of the reaction mixture is accelerated by subjecting the reaction mixture to a temperature above the boiling point of methanol and pressurizing the reaction mixture sufficiently to prevent boil-off. A centrifugal separator separates glycerin phase from biodiesel phase of a resulting reaction product stream. The biodiesel phase is washed by counter-current extraction.

REFERENCES:
patent: 5354878 (1994-10-01), Connemann et al.

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