Flexible method for producing oil bases and middle distillates with hydroisomerization-conversion followed by catalytic dewaxing
US7267758B2 · kind B2 · utility
30Cited by
5References
28Claims
0Family size
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Key dates
| Filing date | Dec 13, 2001 |
| Grant date | Sep 11, 2007 |
| Priority date | — |
| Expiry date | Nov 20, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G65/12
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
For producing very high quality base stock and for simultaneously producing high quality middle distillates, successive hydroisomerisation and catalytic dewaxmg steps are employed wherein the hydroisomerisation is carried out in the presence of a catalyst containing at least one noble metal deposited on an amorphous acidic support, the dispersion of the metal being 20%-100%. The support is preferably an amorphous silica-alumina. Catalytic dewaxing is carried out in the presence of a catalyst containing at least one hydrodehydrogenating element (group VIII) and at least one molecular sieve selected from ZBM-30, EU-2 and EU-11.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.