发明公开
EP2578668A2 METHOD FOR PREPARING LUBRICATING BASE OILS BY USING VACUUM DISTILLED DEASPHALTED OIL 有权
VERFAHREN ZUR HERSTELLUNG VONBASISSCHMIERÖLENDURCH VERWENDUNG VON VAKUUMDESTILITEMTEM,ENTASPHALTIERTEMÖL

METHOD FOR PREPARING LUBRICATING BASE OILS BY USING VACUUM DISTILLED DEASPHALTED OIL
摘要:
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 (150BS) of a high viscosity grade which can not be obtained by a known catalytic reaction and a lubricating base oil of group III by hydrogenation, in a high yield, and thus economical efficiency is excellent.
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