COMPOSITION OF LIGHT PETROLEUM FRACTIONS Russian patent published in 2011 - IPC C10L1/04 C10L1/08 

FIELD: chemistry.

SUBSTANCE: invention provides a gas-oil composition, having composition of C_10-24 paraffins which satisfies the inequality (1-1) given below, cloud point during slow cooling not higher than -6.0°C and pour point not higher than -7.5°C. As an alternative, the invention provides a gas-oil composition having composition of C_10-24 paraffins which satisfies the inequality (1-2), distillate volume at distillation temperature 250°C (E250) 5-45% and cloud point during slow cooling higher than -6.0°C. In inequalities (1-1) and (1-2), n the number of carbon atoms in the paraffin and f(n) a parametre of the paraffin composition for n carbon atoms, having formula (2) given below. In formula (2), n is an integer between 10 and 24, and a, b and c respectively denote the ratio (in molar units) of normal paraffins with n carbon atoms, isoparaffins with n carbon atoms and one side chain, and isoparaffins with n carbon atoms and two or more side chains relative total number of paraffins with n carbon atoms, where content of naphthene is not more than 5 wt %. Mathematical formula 1 (1-1). Mathematical formula 2

f(n)=27.45-3.55(b/a)-0.65(c/a) (2). Mathematical formula 3 (1-2).

EFFECT: improved composition properties.

4 cl, 2 tbl, 2 dwg