FIELD: oil and gas industry.
SUBSTANCE: invention refers to diesel fraction purification method by liquid extraction of sulphur-organic compounds and aromatic hydrocarbons with two solvents - polar and non-polar (hexane or hexane fraction). Phenol containing 3-8 wt % of water is used as polar solvent, at weight ratio to raw material of 2-3:1, ratio of hexane to raw material of 0.5-1.0:1. Concentration of sulphur-organic compounds and aromatic hydrocarbons in extract is performed in phenol regeneration column from extraction phase as a result of formation of azeotropic mixture of phenol - water - saturate hydrocarbons of extraction phase.
EFFECT: purification of diesel fraction sulphur-organic compounds and aromatic hydrocarbons.
2 ex, 6 dwg
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