Pretreatment of FCC naphthas and selective hydrotreating
US8828218B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 19, 2012 |
| Grant date | Sep 9, 2014 |
| Priority date | — |
| Expiry date | Mar 23, 2033 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G2400/28
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
This invention provides methods for multi-stage hydroprocessing treatment of FCC naphthas for improving the overall production quantity of naphtha boiling-range materials during naphtha production for low sulfur gasolines. Of particular benefit of the present processes is the selective treating of cat naphthas to remove gums instead of undercutting the overall naphtha pool by lowering the end cutpoints of the cat naphtha fraction. This maximizes the amount of refinery cat naphtha that can be directed to the gasoline blending pool while eliminating existing processing problems in hydrodesulfurization units. The processes disclosed herein have the additional benefit of minimizing octane losses in the increased naphtha pool volume.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.