FIELD: oil chemistry. SUBSTANCE: method involves extracting heavy hydrocarbonaceous raw material by paraffin hydrocarbonaceous solvent; reducing pressure at subcritical temperature to separate light extracted phase; dividing separated light extracted phase into second light extracted phase enriched in hydrocarbonaceous components soluble in solvent and second heavy raffinate enriched in hydrocarbonaceous components insoluble in solvent; conducting separation of second light extracted phase and second heavy raffinate. EFFECT: increased efficiency of method. 10 cl, 2 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| LIQUID-PHASE OLEFIN ALKYLATION PROCESS | 1993 |
|
RU2138471C1 |
| PIGMENT COMPOSITION, CONCENTRATE OF DISPERSED INORGANIC PIGMENT | 1992 |
|
RU2092508C1 |
| METHOD FOR SOLVENT DEASPHALTING OF OIL RESIDUES WITH ISOPENTANE | 2022 |
|
RU2796733C1 |
| METHOD FOR PRODUCTION OF TITANIUM DIOXIDE PIGMENT | 1990 |
|
RU2038300C1 |
| METHOD OF PRODUCING OLEFINS, INCLUDING DEASPHALTING, HYDROCONVERSION, HYDROCRACKING AND STEAM CRACKING | 2020 |
|
RU2823981C1 |
| METHOD OF PRODUCING OLEFINS, INCLUDING DEASPHALTING, HYDROCRACKING AND STEAM CRACKING | 2020 |
|
RU2822545C1 |
| PROCESS AND APPARATUS FOR PURIFICATION OF HEAVY PETROLEUM FRACTIONS (OPTIONS) | 2002 |
|
RU2269568C2 |
| CONDUCTIVE PIGMENT COMPOSITE MATERIAL | 1990 |
|
RU2046414C1 |
| METHOD FOR DEMETALLIZING HEAVY OIL STOCK | 2015 |
|
RU2611416C1 |
| METHOD OF SOLVENT DEASPHALTISATION OF HEAVY OIL STOCK AND SOLVENT FOR IMPLEMENTATION OF METHOD | 2018 |
|
RU2694533C1 |
