FIELD: oil-and-gas production.
SUBSTANCE: invention relates to method whereby initial hydrotreated diesel fraction is separated by rectification into light and heavy components. Heavy component is subjected to liquid extraction with subsequent regeneration of solvent from refined and extracted solutions and blending of obtained refined product with light component of diesel fraction. Note here that solvent in liquid extraction is N-methylpyrrolidone. Hydrotreated diesel fractions with final boiling point approximating to 300°C are used as light component. Hydrotreated diesel fractions with initial boiling point approximating to 260°C are used as heavy component. Weight ratio between hydrotreated diesel fraction heavy component and N-methylpyrrolidone varies from 1:0.5 to 1:2. Temperature in liquid extraction is kept varying from 40°C to 70°C.
EFFECT: better ecological properties.
1 tbl, 2 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR PRODUCTION OF POLLUTION-FREE DIESEL FUEL | 2012 |
|
RU2497931C1 |
| DIESEL FRACTION PURIFICATION METHOD | 2009 |
|
RU2429276C2 |
| VACUUM GAS OIL AND MAZUT PURIFICATION PROCESS | 2004 |
|
RU2275413C1 |
| METHOD FOR PRODUCTION OF ENVIRONMENTALLY SAFE DIESEL FUEL | 1999 |
|
RU2148070C1 |
| METHOD OF SIMULTANEOUS PRODUCTION OF ENVIRONMENTALLY SAFE DIESEL FUEL AND AROMATIC SOLVENT | 2001 |
|
RU2185416C1 |
| COMPOSITION OF SELECTIVE SOLVENT FOR EXTRACTING OF ALKYL DIBENZOTHIOPHENE AND NITROGEN COMPOUNDS BY LIQUID EXTRACTION METHOD FROM STRAIGHT RUN DIESEL | 2012 |
|
RU2513020C1 |
| METHOD OF SIMULTANEOUSLY OBTAINING ENVIRONMENTALLY SAFE JET ENGINE FUEL AND AROMATIC SOLVENT | 2000 |
|
RU2177024C1 |
| METHOD OF DEPARAFFINATION OF OIL MATERIAL | 2008 |
|
RU2374301C1 |
| METHOD OF ISOLATING AROMATIC HYDROCARBONS FROM DEPARAFFINED FRACTION HAVING 200-320 C | 1997 |
|
RU2139910C1 |
| METHOD FOR OBTAINING PLASTICISERS | 2018 |
|
RU2669936C1 |
