Process for reducing haze in heavy base oil and hydroisomerization catalyst system having reduced haze
US10544374B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Apr 25, 2017 |
| Grant date | Jan 28, 2020 |
| Priority date | — |
| Expiry date | Aug 7, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G2300/304
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process for reducing haze in a heavy base oil includes: obtaining a first effluent oil by contacting a hydrocarbon feedstock with a first catalyst including a zeolite of the ZSM-12 family; and obtaining a second effluent oil by contacting the first effluent oil with a second catalyst including a zeolite of the ZSM-48 family. A hydroisomerization catalyst system having reduced haze includes: a first catalytic region having a first catalyst disposed therein, the first catalyst including a zeolite of the ZSM-12 family; and a second catalytic region having a second catalyst disposed therein, the second catalyst including a zeolite of the ZSM-48 family. The first catalytic region is disposed upstream of the second catalytic region.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.