FIELD: oil and gas industry.
SUBSTANCE: inventions are referred to methods of raw oil upgrading. The invention is referred to a method for upgrading a hydrocarbon stock containing heteroatoms by the removal of heteroatomic polluters that consists of bringing the hydrocarbon stock containing the heteroatoms in contact with an oxidiser; bringing the hydrocarbon stock containing the heteroatoms in contact with at least one caustic and at least one selectivity booster at a temperature of 150°C - 350°C and at a pressure within the range from approximately 0 up to approximately 2000 psi (excess) (from approximately 0 up to approximately 13790 kPa), where at least one caustic is represented by a non-organic oxide containing an element of IA or IIA group, a non-organic hydroxide containing an element of IA or IIA group or their mixture, and the selectivity booster is represented by an alcohol, polyol or their mixture; removing the heteroatomic polluters from the hydrocarbon stock with the receipt of a hydrocarbon product that does not contain heteroatoms in essence. The invention is also referred to versions of the hydrocarbon stock upgrading methods.
EFFECT: effective removal of the heteroatoms from the hydrocarbon stock.
18 cl, 6 dwg, 2 ex
