Hydroconversion process for making lubricating oil basestocks

C - Chemistry – Metallurgy – 10 – G

Patent

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Details

C10G 1/04 (2006.01) C10G 21/04 (2006.01) C10G 21/06 (2006.01) C10G 35/06 (2006.01) C10G 65/04 (2006.01) C10G 67/04 (2006.01) C10G 73/06 (2006.01)

Patent

CA 2430235

A process for producing a lubricating oil basestock having at least 90 wt.% saturates and a VI of at least 105 by selectively hydroconverting a raffinate from a solvent extraction zone in a two step hydroconversion zone followed by a hydrofinishing zone, and a lubricating oil basestock produced by said process.

La présente invention porte sur un procédé qui permet de produire une huile de base pour huiles lubrifiantes contenant au moins 90 % en poids de composés saturés et un indice de viscosité d'au moins 105. Ce procédé consiste à effectuer une hydroconversion sélective d'un raffinat, obtenu à partir d'une zone d'extraction par solvants, que l'on fait passer dans une zone d'hydroconversion à deux étages, puis dans une zone d'hydrofinissage. Cette invention concerne également une huile de base pour huiles lubrifiantes produite au moyen de ce procédé.

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