FIELD: oil and gas industry.
SUBSTANCE: here is disclosed group of inventions related to versions of two-stage method of calalytic hydro-treatment of heavy oil hydrocarbons with high content of metals, total sulphur, pyrobitumens and total nitrogen, containing less, than 80% for volume of distillates extracted at 538°C and possessing density API lower, than 32°. According to the first version at the first stage hydrocarbons hydro-metallisation and hydrogen cracking of pyrobitumens are carried out, and at the second stage hydrocarbons hydro-desulphurisation and hydro-denitrogenation are performed; at that both stages of process are performed in a reactor with an immovable layer of catalyst. The second version includes: a) passing hydrogen and hydrocarbon raw material of heavy oil with specific mass (density) less, than 32° API and contents of distillates extracted at 538°C less, than 80% of volume through to the first stage of reaction for hydro-treatment of the said raw materials; at that the said first stage of reaction is performed in the reactor with the immovable layer of catalyst, containing a catalyst of hydro-demetallization and facilitating operation under pressure from 40 to 130 kg/cm2, at temperature from 320° to 450°C, at a volume speed (LHSV) from 0.2 to 3.0 hr-1 and at ratio of hydrogen/hydrocarbon (H2/HC) from 350 to 1.200 In/I with the result of production of hydro-treated heavy hydrocarbons; b) passing hydrogen and the said hydro-treated heavy hydrocarbons through to the second stage of reaction for hydro-treatment in the reactor with the immovable layer of catalyst containing hydro desulphurisation catalyst and facilitating operation under pressure from 40 to 130 kg/cm2, at temperature from 320° to 450°C, at a volume speed (LHSV) from 0.2 to 3.0 hr-1 and at ratio of hydrogen/hydrocarbon (H2/HC) from 350 to 1.200 In/I, at that the amount of sediments formed at each the said first and second stages of reaction is less 0.65% from weight of hydro-treated hydrocarbons. Also one of the inventions of the group refers to the product produced by the method according to the second variant. Employing of the said variant of the method facilitates high degree of metals, sulphur, nitrogen and pyrobitumens extraction and also limits formation of sediments which provides receiving the product after hydro-treatment with improved characteristics.
EFFECT: facilitating high degree of metals, sulphur, nitrogen and pyrobitumens extraction and also limits formation of sediments which provides receiving product after hydro-treatment with improved characteristics.
10 cl, 26 tbl, 10 ex, 1 dwg
