公开(公告)号：US11680214B2

公开(公告)日：2023-06-20

申请号：US17277646

申请日：2019-08-28

Applicant: SHELL OIL COMPANY

Inventor： Nariman Boumendjel ,  Ralf Gunnar Meister ,  Cornelis Hyacinthus Maria Van Der Hulst ,  Nicolaas Van Dijk

IPC: C10G65/12 ,  C10M101/02 ,  C10N20/00 ,  C10N30/00 ,  C10N20/02

CPC classification number: C10G65/12 ,  C10M101/02 ,  C10G2300/1074 ,  C10G2300/202 ,  C10G2300/205 ,  C10G2300/206 ,  C10G2300/301 ,  C10G2300/302 ,  C10G2300/304 ,  C10G2300/308 ,  C10G2300/4006 ,  C10G2300/4012 ,  C10G2300/4018 ,  C10G2300/70 ,  C10G2400/10 ,  C10M2203/1006 ,  C10N2020/011 ,  C10N2020/02 ,  C10N2030/43

Abstract: A process for producing a base oil composition from a deasphalted oil (DAO) feed, where the DAO feed undergoes hydrotreating, hydrocracking, catalytically dewaxing, hydrofinishing, and fractionating to generate the base oil composition. The base oil composition includes a hazy-free at 0° C. heavy base oil comprising (a) a kinetic viscosity ranging from 15 to 21 cSt at 100° C., (b) a 5 viscosity index of at least 95, (c) a pour point of less than −12° C., (d) a cloud point of less than −18° C., and (e) a total aromatics content of 2 wt % or less, where the hazy-free at 0° C. heavy base oil maintains a hazy-free appearance when stored undisturbed at 0° C. during a test period.

公开(公告)号：US11078430B2

公开(公告)日：2021-08-03

申请号：US16471639

申请日：2017-12-21

Applicant: SHELL OIL COMPANY

Inventor： Eglantine Armelle Christiane Colette Marie Albe ,  Godfried Johannes Aarts ,  José Luís Moniz Jardim ,  Cornelis Hyacinthus Maria Van Der Hulst ,  Ralf Gunnar Meister

IPC: C10G21/02 ,  C10G21/04 ,  C10G21/16 ,  C10G21/28 ,  C10G61/04

Abstract: The present invention relates to a method for reducing the cloud point of a base oil with high saturates/paraffinic content to below 0° C., wherein the method comprises subjecting said base oils to a cloud point reduction step comprising adding said base oil to a solvent mixture, wherein the solvent mixture comprises a paraffin naphtha fraction and a co-solvent to obtain a solvent treatment mixture; and subjecting the solvent treatment mixture to a solvent de-waxing step.