Raffinate hydroconversion process

Details Raffinate hydroconversion process Raffinate hydroconversion process

C - Chemistry, Metallurgy

10

G

C10G 67/04 (2006.01) C10G 21/00 (2006.01) C10G 47/12 (2006.01) C10G 65/04 (2006.01) C10G 65/08 (2006.01) C10G 65/12 (2006.01)

Patent

CA 2257918

A process for producing a high VI/low volatility lubricating oil basestock. The process comprises subjecting the raffinate from a solvent extraction step (40) to a two-step, single stage hydroconversion process wherein the first step involves severe hydroconversion of the raffinate (42) followed by a cold hydrofinishing step (50).

L'invention concerne un procédé pour la fabrication d'huile de base lubrifiante à fort indice de viscosité VI/faible volatilité. A l'issue d'une phase d'extraction par solvant (40), on soumet le raffinat à un processus d'hydroconversion à un étage qui comprend les deux étapes suivantes: d'abord hydroconversion extrême du raffinat (42), puis un hydrofinissage à froid (50).

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