Catalytic dewaxing process
US4917789A · kind A · utility
84Cited by
7References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 3, 1987 |
| Grant date | Apr 17, 1990 |
| Priority date | — |
| Expiry date | Feb 3, 2007 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02B3/06
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A process for reducing the pour point of sulfur containing gas oil fractions to produce fractions, including diesel oil of reduced pour point involving sequential hydrotreating and dewaxing of the gas oil feedstock. The hydrotreating step is carried out over a conventional hydrodesulfurization catalyst to remove sulfur. The dewaxing step is carried out over silicalite at mild dewaxing conditions under which the C.sub.3 and lower gas make is no greater than 2 wt. % based upon the gas oil feed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.