Two stage process for hydrodesulfurizing distillates using bulk multimetallic catalyst
US6929738B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 14, 2000 |
| Grant date | Aug 16, 2005 |
| Priority date | — |
| Expiry date | Jan 14, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G2400/14
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A two stage hydrodesulfurizing process for producing low sulfur distillates. A distillate boiling range feedstock containing in excess of about 3,000 wppm sulfur is hydrodesulfurized in a first hydrodesulfurizing stage containing one or more reaction zones in the presence of hydrogen and a hydrodesulfurizing catalyst. The liquid product stream thereof is passed to a first separation stage wherein a vapor phase product stream and a liquid product stream are produced. The liquid product stream, which has a substantially lower sulfur and nitrogen content then the original feedstream is passed to a second hydrodesulfurizing stage also containing one or more reaction zones where it is reacted in the presence of hydrogen and a second hydrodesulfurizing catalyst at hydrodesulfurizing conditions. The catalyst in any one or more reaction zones is a bulk multimetallic catalyst comprised of at least one Group VIII non-noble metal and at least two Group VIB metals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.