FIELD: petrochemical processes.
SUBSTANCE: process involves preliminary removal of part of organics from petroleum fraction with lubricating oil boiling range using selective extraction followed by dewaxing of selective extraction product. The latter is then routed to following steps: (i) contacting base lubricating oil product with appropriate sulfidized catalyst in the first hydrofining process stage; (ii) separating effluent from stage (i) into gas and liquid fractions; (ii) contacting liquid fraction from stage (ii) with catalyst including precious metal component deposited on amorphous refractory oxide carrier in presence of hydrogen in the second hydrofining process stage; and (iv) recovering base lubricating oil.
EFFECT: developed process for producing group II base lubricating oils complying with American Petroleum Institute norms from oil fraction with high level of sulfur and/or nitrogen compounds.
9 cl, 1 tbl, 3 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF PRODUCTION OF THE BASE OIL WITH THE HIGH CONTENT OF THE SATURATED HYDROCARBONS | 2002 |
|
RU2278147C2 |
| LUBRICATING OIL COMPOSITION AND METHOD FOR PRODUCTION THEREOF | 2008 |
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| COLORLESS BASIC LUBRICATING OIL PRODUCTION PROCESS | 2001 |
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| METHOD FOR PREPARING PARAFFIN RAFFINATE AND ITS USING | 2002 |
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RU2671862C2 |
| METHOD OF HYDROPROCESSING IN ACIDIC MEDIUM FOR PRODUCTION OF BASIC LUBRICATING OILS | 2009 |
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| HYDROCARBON FEEDSTOCK DEPARAFFINATION PROCESS AND A METHOD FOR PRODUCING BASE LUBE OILS UTILIZING THEREOF | 1999 |
|
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| METHOD OF PRODUCING SPINDLE OIL, LIGHT MACHINE OIL, AND MEDIAN MACHINE OIL FROM RESIDUAL FRACTIONS OF FUEL HYDROCRACKING PROCESS | 2001 |
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RU2272068C2 |
| METHOD OF MAKING BASE OIL LUBRICANT | 2005 |
|
RU2383582C2 |
| METHOD OF PREPARING MAIN COMPONENT OF LUBRICATING OIL USING CATALYST WITH HIGH SELECTIVITY OF VISCOSITY INDEX | 1995 |
|
RU2140966C1 |
