Two stage hydroprocessing with vapor-liquid interstage contacting for vapor heteroatom removal
US5968346A · kind A · utility
34Cited by
6References
28Claims
0Family size
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Key dates
| Filing date | Sep 16, 1998 |
| Grant date | Oct 19, 1999 |
| Priority date | — |
| Expiry date | Sep 16, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G70/06
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A hydroprocessing process includes two hydroprocessing reaction stages, both of which produce a liquid and a vapor effluent, and a liquid-vapor contacting stage. The first stage vapor effluent contains impurities, such as heteroatom compounds, which are removed from the vapor by contact with processed liquid effluent derived from one or both reaction stages and, optionally, also liquid recovered from processed vapor. The first and contact stage liquid effluents are passed into the second stage to finish the hydoprocessing. The contact and second stage vapor effluents are cooled to recover additional hydroprocessed product liquid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.