METHOD OF OIL REFINING FROM HETEROATOMIC COMPONENTS Russian patent published in 2018 - IPC C10G25/00 C10G29/16 C10G31/00 B01J19/10 B01J20/06 

FIELD: oil and gas industry.

SUBSTANCE: invention relates to refining petroleum and petroleum products, from sulfur-, nitrogen- and oxygen-containing compounds by contacting with an inorganic sorbent and sonication, and can be used in the preparation of oil for transportation and/or in the cycle of crude oil preparation for processing or refining petroleum products before use to reduce the content of heteroatom components in oil by 5.28–5.34 %. Method for refining oil from heteroatomic components involves the use of a sorbent as a mixture of oxide powders: NiO:CuO:CoO:CaO in relation to 1.0:2.0:1.0:(0.5–0.7) mass parts, which is mixed with oil in a ratio of 1:5 at atmospheric pressure. Resulting mixture of sorbent and oil is subjected to ultrasound at a frequency of 22 kHz and an intensity of 0.15 W/m² with a treatment time of not more than 10 minutes, filtered. Remaining oil is washed off from the sorbent with a mixture of hexane-benzene-ethanol solvents, followed by its distillation at atmospheric pressure. Processed oil is sent for reprocessing. Used sorbent is washed with a mixture of benzene-dimethyl ketone solvents to remove sorbed heteroatom compounds.

EFFECT: reduction of kinematic viscosity of oil up to 50 mm²/s and the content of heteroatomic components in the oil.

1 cl, 1 tbl, 1 ex, 2 dwg