FIELD: chemistry.
SUBSTANCE: method for obtaining basic components of high-index petroleum oils is realised from non-converted residue of vacuum gasoil hydrocracking, obtained in the process of vacuum distillation of mazuts of sulphurous and highly sulphurous petroleum. Method is characterised by the fact that non-converted residue of hydrocracking is subjected to rectification in order to separate fraction 400-500°C with its further extraction with N-methylpyrrolidone and further separation into extract and raffinate solutions, distillation of N-methylpyrrolidone from rafinate and extract solutions, deparaffinisation of obtained raffinate by binary solvent MEK-toluene and further distillation of solvent from filtrate.
EFFECT: obtaining high-index basic oil with ultralow content of sulphur.
8 tbl
| Title | Year | Author | Number |
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| METHOD FOR HIGH TEMPERATURE COOLANT OIL PRODUCTION | 2016 |
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RU2617121C1 |
| METHOD OF OBTAINING HIGH-INDEX COMPONENT OF BASE OILS OF GROUP III/III+ | 2019 |
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| METHOD OF OBTAINING HIGH-INDEX COMPONENTS OF BASE OILS OF GROUP III/III+ | 2018 |
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RU2675852C1 |
| METHOD OF HIGH-INDEX COMPONENTS OF BASE OILS PREPARATION | 2017 |
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RU2649395C1 |
| METHOD FOR OBTAINING COMPONENTS OF BASE OILS | 2017 |
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RU2667361C1 |
| METHOD OF PRODUCING HIGH-INDEX COMPONENTS OF BASE OILS | 2015 |
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| METHOD OF PRODUCING BASE OIL COMPONENTS | 2018 |
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RU2694054C1 |
| VACUUM GAS OIL AND MAZUT PURIFICATION PROCESS | 2004 |
|
RU2275413C1 |
| VACUUM GAS OIL PURIFICATION PROCESS ASSOCIATED WITH PRODUCTION OF CARBON BLACK MANUFACTURE FEEDSTOCK | 2002 |
|
RU2221836C1 |
| METHOD FOR OBTAINING HIGH-VISCOSITY INDEX BASE OILS | 2022 |
|
RU2790171C1 |
