FUEL FRACTION PRODUCTION PROCESS Russian patent published in 2007 - IPC C10G7/00 

FIELD: petroleum and gas processing.

SUBSTANCE: invention relates to processing of petroleum or petroleum-gas condensate mixtures to produce fuel fractions. Process according to invention comprises distillation of hydrocarbon feedstock with evaporation-inducing agent involving preliminary stripping of mixture on stripping column followed by fractionation of stripped mixture on atmospheric column wherein gasoline, kerosene, straw, and gas oil fractions are run off and bottom residue is obtained. More particularly, vapor streams from the stripping columns, used to strip side runs of atmospheric column, are condensed, blended, and, after the blend is heated in tubular furnace, fed to distillation section of atmospheric column as circulating evaporation-inducing agent in amount determined according to formula: G_eia = G_sb*(1-ρ_nν_nT_n/ρ_smν_smT_sm)/(ρ_sbν_sbT_sb/ρ_eiaν_eiaT_eia -1), where G_eia is amount of evaporation-inducing agent (stripping columns distillate), G_sb amount of stripped petroleum-gas condensate blend; ρ_n, ρ_sb, ρ_eia normable density of diesel fuel and densities of stripped petroleum-gas condensate blend and distillate (evaporation-inducing agent), kg/m³; ν_n, ν_sb, ν_eia normable viscosity of diesel fuel and viscosities of stripped petroleum-gas condensate blend and distillate (evaporation-inducing agent), m²/s*10^-6; and T_n, T_sb, T_{eianormable freezing temperature of diesel fuels and freezing temperatures of stripped petroleum-gas condensate blend and distillate (evaporation-inducing agent), K.}

EFFECT: increased recovery of light petroleum products from their potential in feedstock.

1 dwg, 2 tbl