FIELD: oil-and-gas industry.
SUBSTANCE: invention relates to preparation of hydrogen-sulphide-bearing oil and comprises cleaning oil of hydrogen sulphide at feed of 40-60% go total weight of oil being cleaned, 1st flow for separation with subsequent oxidation of hydrogen sulphide by air oxygen. After oxidation, oil flow is fed to high-pressure separator. Extra desorption cleaning assembly is mounted whereto 40-60% of total weight of cleaned oil is fed, 2nd flow. For blowing hydrogen sulphide off from oil into extra desorption cleaning assembly from high-pressure separator. After cleaning, oil flows are mixed and directed to low-pressure separator. Mix of gases from low-pressure separator and desorption cleaning assembly is used for oil heating.
EFFECT: higher quality of commercial oil owing to decrease in concentration of chlorides to first group of GOST R 51858-2002, decreased consumption of process solutions.
1 dwg, 1 tbl, 9 ex
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