Reducing hydrogen consumption in hydrotreating petroleum fractions
US3997427A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 24, 1975 |
| Grant date | Dec 14, 1976 |
| Priority date | — |
| Expiry date | Dec 24, 1995 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/52
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A process for hydrotreating middle distillate fraction petroleum feed stocks wherein hydrogen requirements for the hydrotreater are reduced by first passing the feed stock and steam to a steam hydroconversion zone over a dual function catalyst comprising molybdenum on a chromium supported on ferric oxide support or on a high surface area alumina support. In the steam hydroconversion zone a portion of the feed reacts with the steam to produce hydrogen via a steam reforming reaction. This hydrogen is used in situ to saturate a substantial portion of the olefins and remove some of the sulfur compounds present in the feed stock, thereby partially refining same. The partially refined feed is then passed to a hydrotreating zone for further treatment with greatly reduced hydrogen requirements in said hydrotreating zone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.