Process to prepare a lubricating base oil and a gas oil

Details Process to prepare a lubricating base oil and a gas oil Process to prepare a lubricating base oil and a gas oil

C - Chemistry, Metallurgy

10

G

C10G 65/12 (2006.01) C10G 65/04 (2006.01)

Patent

CA 2440155

Process to prepare two or more lubricating base oil grades and a gas oil by (a) hydrocracking/hydroisomerisating a Fischer-Tropsch product, wherein weight ratio of compounds having at least 60 or more carbon atoms and compounds having at least 30 carbon atoms in the Fischer-Tropsch product is at least 0.2 and wherein at least 30 wt% of compounds in the Fischer-Tropsch product have at least 30 carbon atoms, (b) separating the product of step (a) into one or more gas oil fractions and a base oil precursor fraction, (c) performing a pour point reducing step to the base oil precursor fraction obtained in step (b), and (d) separating the effluent of step (c) in two or more base oil grades.

L'invention porte sur un procédé de préparation d'une ou plusieurs huiles de base lubrifiantes et de gazole comportant les étapes suivantes: (a) hydrocraquage/hydroisomérisation d'un produit de Fischer-Tropsch, dont le rapport pondéral des constituants présentant au moins 60 atomes de carbone, aux constituants présentant au moins 30 atomes de carbone est au moins de 0,2; et dont au moins 30 % des constituants en poids présentent au moins 30 atomes de carbone; (b) séparation des produits de l'étape (a) en une ou plusieurs fractions de gazole et une fraction de précurseurs d'huile de base; (c) réduction du point d'écoulement de la fraction de précurseurs d'huile de base obtenue en (b); et (d) séparation de l'effluent de l'étape (c) en deux ou plus de deux grades d'huile de base.

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