METHOD TO PRODUCE HYDROCARBON FRACTIONS FROM MIXTURES OF BIOLOGICAL ORIGIN Russian patent published in 2012 - IPC C10G3/00 C10G45/62 C10G65/02 

FIELD: power engineering.

SUBSTANCE: method is described to produce hydrocarbon fractions, which may be used as diesel fuel or as components of diesel fuel, based on a mixture of biological origin, containing ethers of fatty acids, possibly, with a certain amount of free fatty acids, which includes the following stages: 1) hydrodesoxygenation of a mixture of organic origin; 2) hydroisomerisation of a mixture produced at the stage (1), after possible treatment for cleaning; besides, the specified stage of hydroisomerisation is carried out in presence of a catalytic system, which contains the following: a) a carrier of acid nature, including a fully amorphous micro-mesoporous silicon-aluminium oxide, having a mole ratio SiO₂/Al₂O₃ in the range from 30 to 500, the surface area of more than 500 m²/g, volume of pores in the range from 0.3 to 1.3 ml/g, the average diameter of pores below 40 Ǻ, b) a metal component containing one or more metals of group VIII, possibly mixed with one or more metals of the group VIII.

EFFECT: production of a hydrocarbon fraction, which may be applied as diesel fuel or as a component of diesel fuel.

55 cl, 4 tbl, 3 dwg, 2 ex