| Evaluation of Catalyst Grading Scheme for Paraffin Base Lubricating Oil Unit |
| Received:March 19, 2021 Revised:March 19, 2021 |
| DOI：10.12136/j.issn.1000-890X.2022.07.0532 |
| Key Words: lubricating base oil；minus fourth-line distillate oil；hydrogenation process；catalyzer； fraction；yield |
| Author Name | Affiliation | E-mail | | XU Yanfeng* | CNOOC（Qingdao） Heavy Oil Processing Engineering Research Center | xyf0523@126.com | | WANG Qisheng | CNOOC（Taizhou） Petrochemical Co.，Ltd | | | ZHANG Cuizhen | CNOOC（Qingdao） Heavy Oil Processing Engineering Research Center | |
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| Abstract: |
| The feasibility of producing high-quality lubricating base oil with two catalyst schemes was evaluated by using a pilot plant and minus fourth-line distillate oil as raw material.The results showed that，by using catalyst scheme A of three-stage high-pressure hydrogenation process，5cst and 10cst lubricating base oils which met the index requirements of Q/SY 44—2009 were obtained under the selected conditions，their yields were 17. 96% and 45. 14%，respectively，but the 280～360 ℃ fraction could not met the index requirements of 2sct lubricating base oil，and it could be used as the base oil for transformer oil.By using catalyst scheme B of three-stage hydrogenation process，the obtained lubricating base oils met the index requirements，and under the selected conditions，the yields of 2cst，5cst and 10cst lubricating base oil were 9. 01%，14. 56% and 37. 17%，respectively. |
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