Catalyst for the hydrocracking of heavy vacuum gas oils, method of preparation of catalyst and process for use thereof in the mild hydrocracking of heavy vacuum gas oils
US4600703A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 8, 1985 |
| Grant date | Jul 15, 1986 |
| Priority date | — |
| Expiry date | Jul 8, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G47/12
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A catalyst for use in the mild hydrocracking (MHC) of heavy vacuum gas oils to produce middle distillates and a method for the preparation of the catalyst and a process for treating the heavy vacuum gas oils with the catalyst. The catalyst comprises molybdenum, nickel and phosphorus supported on gamma alumina. The catalyst of the invention possesses a P/Mo+Ni ratio between 0.7 and 1.1, which endows it with a high capacity for hydrodesulfurization (HDS), hydrodenitrogenation (HDN) and hydroconversion of the fraction which can be distilled at 370.degree. C.+ to middle distillates, when the catalyst is used under MHC conditions, that is, T=variable, P=750 psig, LHSV=0.70 m.sup.3 /m.sup.3 h and the ratio H.sub.2 /VGO=300 Nm.sup.3 /m.sup.3. The new catalyst can operate for more than 26 months, maintaining a consistent conversion of 20% and achieving the sulfur and nitrogen requirements in the product obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.