FIELD: petroleum processing.
SUBSTANCE: method comprises rectification of petroleum in presence of additive, absorption-mediated purification of light fractions, and separation of water and hydrocarbon phases in separator, said additive incorporated into raw material in rectification process being sulfur-alkali solution obtained in the process of afterpurification of isolated light fractions by recycling regenerable alkanolamine solution. Purification of light fractions is effected by mixing them with alkanolamines in turbulent injection mixer. Spent sulfur-alkali solution is used instead fresh alkali.
EFFECT: reduced expenses on petroleum processing and solved ecological problems due to reused sulfur-alkali effluents.
2 cl, 1 tbl, 4 ex
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