METHOD OF VEGETABLE OIL PROCESSING Russian patent published in 2009 - IPC C12P7/62 C10L1/02 C11C3/10 

FIELD: chemistry.

SUBSTANCE: invention relates to method of obtaining ethers of fatty acids, which can be applied as biodiesel - alternative biofuel. Described is method of rapeseed oil processing by its re-etherification with ethyl alcohol, with separation of obtained products into fractions, obtained barbotage with carbon dioxin of immobilised granulated yeasts biomass, is realised in reactor at 350-400°C and pressure 35-50 MPa with following cooling of mixture, oven control in extractor to 250°C, extraction with carbon dioxide in overcritical conditions at 350°C and pressure 35 MPa. Obtained homogenous mixture is supplied into first separator for separation of glycerin from target product, and then target product is supplied to second separator for separation of fatty acid ethyl ether from carbon dioxin, which is directed to recycling.

EFFECT: simplification of technological process and improvement of ecology due to application of overcritical ethyl alcohol, and obtaining of target product with conversion 95% and higher.

2 cl, 2 ex