Combined process for improved hydrotreating of diesel fuels
US6551501B1 · kind B1 · utility
30Cited by
8References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 1, 2000 |
| Grant date | Apr 22, 2003 |
| Priority date | — |
| Expiry date | Jul 29, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G2400/04
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Described herein is a combined process for improved hydrotreating of diesel fuels, in which the feed to be hydrotreated is pretreated with a selective adsorbent prior to the hydrotreating step to remove polar materials, especially nitrogen containing compounds (N-compounds). The selective adsorption process can employ either liquid or solid adsorbents. After contact of the adsorbent with the diesel fuel feed, the adsorbent containing undesired polar compounds is separated from the diesel fuel. The separated adsorbent is then subjected to a two step procedure for regeneration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.