DLA Piper LLP (US)
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 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.
SK Innovation Co., Ltd.
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Seung Hoon Sun Gyung Rok Do Hyoun Kyung Seok Do Woan Seung Woo Jae Wook Bum Suk Byung Won
Oh Choi Kim Kim Noh Kim Lee Ryu Chun Yoon