Sequential residue hydrodesulfurization and thermal cracking operations in a common reactor
US4017380A · kind A · utility
7Cited by
10References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 18, 1975 |
| Grant date | Apr 12, 1977 |
| Priority date | — |
| Expiry date | Jul 18, 1995 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G2300/107
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A process comprising passing a first stream comprising residual oil and hydrogen downwardly through a zone containing hydrodesulfurization catalyst under hydrodesulfurization conditions until said catalyst is deactivated. Subsequently, passing a second stream of residual oil and hydrogen upwardly through the deactivated hydrodesulfurization catalyst under thermal cracking conditions, including a temperature above the hydrodesulfurization temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.