TiO2 catalyst in ketonization reaction for producing RBO

摘要

The present invention is a method for producing a renewable base oil from a biogenic feedstock comprising a mixture of 2-95 wt% free fatty acids; 5-98 wt% of fatty acid monoglycerides, diglycerides and triglycerides. A feedstock comprising fatty acid glycerol; 0-50 wt% of one or more compounds selected from the list consisting of non-glycerol type fatty acid esters, fatty acid amides and fatty acid alcohols, the majority of said feedstock being free fatty acids Providing a feedstock which is a mixture of glycerol and a fatty acid glycerol, all or a portion of said feedstock in the presence of a ketonization catalyst selected as a metal oxide catalyst containing essentially titanium as metal. A step of subjecting two free fatty acids to react to obtain a ketone stream, said ketone stream comprising mainly saturated ketone, and said ketone stream being deoxygenated comprising a renewable base oil. A process is provided that comprises subjecting both hydrodeoxygenation reaction conditions and hydroisomerization reaction conditions, either simultaneously or sequentially, to obtain a refined and isomerized base oil product stream.