Method for Reducing the Content of Saturated Monoglycerides in a Raw Biodiesel
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United States of America Patent
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Issued Date -
Jun 25, 2020
app pub date -
May 3, 2018
filing date -
May 19, 2017
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Abstract
The invention relates to a method for reducing the content of monoglycerides (MG), in particular saturated monoglycerides (GMG), in a raw biodiesel (RB), which has a content of monoglycerides (MG) of between 0.4 and 0.7 wt % and a content of free fatty acids (FFA) of less than or equal to 0.25 wt %, comprising the following steps: A) providing the raw biodiesel (RB) having the constituents indicated above in the concentrations indicated above; B) adding (1) an alkaline aqueous solution (L) to the raw biodiesel (RB); C) mixing the alkaline aqueous solution (L), and thus glycerides in the biodiesel, preferably monoglycerides (MG), in particular saturated monoglycerides (GMG), being hydrolyzed; D) performing a first centrifugal separation (2) of a heavy phase (6) comprising the alkaline aqueous solution (L) with the hydrolyzed constituents from a light phase (7) comprising the biodiesel; E) drying (5) the light phase (7) or (9) in order to provide a processed biodiesel for use as a fuel having a content of monoglycerides of less than 0.4 wt %. The invention further relates to a use according to the invention.
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