METHOD FOR PREPARING LUBRICATING BASE OILS BY USING VACUUM DISTILLED DEASPHALTED OIL
The present invention relates to a method for preparing lubricating base oils by using vacuum distilled deasphalted oil, and more specifically, to a method for preparing various kinds of lubricating base oils by distilling a distillate obtained from a solvent deasphalting (SDA) process under reduced...
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | The present invention relates to a method for preparing lubricating base oils by using vacuum distilled deasphalted oil, and more specifically, to a method for preparing various kinds of lubricating base oils by distilling a distillate obtained from a solvent deasphalting (SDA) process under reduced pressure to obtain heavy deasphalted oil (H-DAO) and light deasphalted (Lt-DAO) and then treating the H-DAO and the Lt-DAO by catalytic reactions, respectively. According to the present invention, it is possible to obtain heavy lubricating base oil (1508S) of a high viscosity grade which cannot be obtained by a known catalytic reaction and a lubricating base oil of group Ill by hydrogenation, in a high yield, and thus economical efficiency is excellent. Figure 1 |
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