FIELD: oil-and-gas industry.
SUBSTANCE: invention related to heavy raw materials processing, extracted from heavy and very heavy crude oil, bottoms, "heavy oil", received after catalytic treatment, "thermal tar oil", bitumen from "oil-bearing sands", coals of a different origin and other high-boiling hydrocarbons, know as a "black oil", with a help of common use of at least three process plants: deasphaltising (CDA1), hydraulic treatment (HT) with a use of a catalyst at suspension phase, distillation or instant evaporation (D), which includes the following stages - supply of the heavy raw material into deasphaltising section at a dissolver presents, generation of two flows at that, one of which contains of deasphaltised oil product ( DAO1 from CDA1), the second one includes asphaltenes, - mixing the flow, consisting of deasphaltised oil product (DAO1 from CDA1) with appropriate hydrogenation catalyst, supply of created mixture into hydraulic treatment section (HT) and injection of hydrogen or mixture, containing hydrogen and H2S, - mixing asphaltenes containing flow, coming from deasphaltising section (CDA1) with appropriate amount of the hydrogenation catalyst, supply the created mixture to the second hydraulic treatment section (HT2) and injection of hydrogen or mixture, containing hydrogen and H2S, - supply of the both flows, containing reaction products from hydraulic treatment section (HT1) and the catalyst in dispersed phase, to one or several distillation of instant evaporation stages (D), where the most volatile fractions, including gases generated in the two hydrogenation reactions (HT1 and HT2), to be separated from the bottoms (tar oil) of fluid, coming our of instant evaporation plant, - supply of the bottoms (tar oil) or the fluid, coming our of instant evaporation plant, which contain the catalyst in dispersed phase, enriched with metal sulfides, and generated in result of raw material demetallisation, and possibly containing coke, in to the second deasphaltising section (CDA2) at the dissolver presents, creating two flows that way, one of which contains of the deasphaltised oil product (DAO2 from CDA2), and the second consists of asphaltenes, and part of the second flow, apart the one which goes to discharge, returns back to the hydraulic treatment section (HT1), and the other one returns back to the second hydraulic treatment section (HT2).
EFFECT: conversion increase during the distillation processes and raw material quality increase.
40 cl, 3 ex, 3 tbl, 1 dwg
