Process for producing middle distillates by hydroismerizing and hydrocracking a heavy fraction from a fischer-tropsch effluent
US8709234B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jun 3, 2008 |
| Grant date | Apr 29, 2014 |
| Priority date | — |
| Expiry date | Dec 19, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G45/58
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A process in which the paraffinic effluent derived from a Fischer-Tropsch synthesis unit is separated to obtain a heavy C5+ fraction, said heavy fraction then being hydrogenated in the presence of a hydrogenation catalyst at a temperature in the range 80° C to 200° C, at a total pressure in the range 0.5 to 6 MPa, at an hourly space velocity in the range 1 to 10 h-1, and at a hydrogen flow rate corresponding to a hydrogen/hydrocarbons volume ratio in the range 5 to 80 NI/I/h, the liquid hydrogenated effluent then being brought into contact with a hydroisomerization/hydrocracking catalyst, with no prior separation step, the hydroisomerized/hydrocracked effluent then being distilled to obtain middle distillates and possibly oil bases.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.