- 专利标题： METHOD FOR DEODORIZING REGENERATED LUBRICATING OILS USING SUPERCRITICAL CO2
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申请号： EP21306629.3申请日： 2021-11-23
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公开(公告)号： EP4183462A1公开(公告)日： 2023-05-24
- 发明人: DE FEO, Modestino , REVERCHON, Ernesto , CAMPARDELLI, Roberta
- 申请人： TotalEnergies OneTech
- 申请人地址： FR 92400 Courbevoie La Défense 6 2 Place Jean Millier
- 代理机构： Cabinet Nony
- 主分类号： B01D11/02
- IPC分类号： B01D11/02 ; C10M175/00 ; C10G21/08 ; C10G71/00 ; C10N40/25 ; C10N40/26
摘要：
The present invention relates to a process of deodorization of a at least partly regenerated lubricating oil, said process comprising the steps of:
- fractionating the at least partly regenerated lubricating oil in a countercurrent fractional distillation column with a countercurrent flow of supercritical carbon dioxide (sCO2), wherein said oil and supercritical CO 2 are fed in the countercurrent column with a ratio of the sCO 2 flow rate on oil flow rate ranging from 15 to 50; and
- recovering the deodorized lubricating oil which is freed of the bad smelling fraction, said bad smelling fraction being extracted within the supercritical CO 2 .
It further relates to a process for preparing a lubricant composition from a deodorized base oil obtained according to the invention.
- fractionating the at least partly regenerated lubricating oil in a countercurrent fractional distillation column with a countercurrent flow of supercritical carbon dioxide (sCO2), wherein said oil and supercritical CO 2 are fed in the countercurrent column with a ratio of the sCO 2 flow rate on oil flow rate ranging from 15 to 50; and
- recovering the deodorized lubricating oil which is freed of the bad smelling fraction, said bad smelling fraction being extracted within the supercritical CO 2 .
It further relates to a process for preparing a lubricant composition from a deodorized base oil obtained according to the invention.
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