Process to prepare a base oil from slack-wax

Details Process to prepare a base oil from slack-wax Process to prepare a base oil from slack-wax

C - Chemistry, Metallurgy

10

G

C10G 65/04 (2006.01) C10G 45/08 (2006.01) C10G 45/12 (2006.01) C10G 45/58 (2006.01) C10G 45/60 (2006.01) C10G 67/04 (2006.01)

Patent

CA 2449348

Process to prepare a base oil starting from a slack wax containing feedstock by (a) contacting the feedstock in the presence of hydrogen with a sulphided hydrodesulphurisation catalyst comprising nickel and tungsten on an acid amorphous silica-alumina carrier and (b) performing a pour point reducing step on the effluent of step (a) to obtain the base oil.

La présente invention se rapporte à un procédé de préparation d'une huile de base à partir d'une charge d'alimentation contenant du gatsch, qui consiste (a) à mettre en contact la charge d'alimentation, en présence d'hydrogène, avec un catalyseur d'hydrodésulfuration sulfuré contenant du nickel et du tungstène sur un support acide de silice amorphe-alumine et (b) à effectuer une étape de réduction du point d'écoulement sur l'effluent issu de l'étape (a) de manière à obtenir l'huile de base.

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