HIGH-OCTANE GASOLINE PRODUCTION PROCESS Russian patent published in 2007 - IPC C10G59/02 

FIELD: petroleum processing.

SUBSTANCE: crude oil is subjected to electrodesalting, atmospheric and/or vacuum distillation, secondary distillation of stable gasoline fractions to form light unstable gasoline, which is subjected to hydrofining. Resulting hydrofined fraction is reformed in presence of catalyst to give unstable catalysate. The latter is stripped on stabilization column to remove C₁-C₃ fraction, while top of the column is cooled by means of sharp reflux line and withdrawal of stable catalysate. Sharp reflux line is continuously supplemented by light unstable gasoline in proportion of 9.1 to 26.8% of the weight of unstable catalysate. Temperature of column top is maintained at no higher than 67°C and that of the bottom not lower than 164°C.

EFFECT: improved quality of target product.

3 cl, 4 tbl