Liquid and vapor stage hydroprocessing using once-through hydrogen
US6224749A · kind A · utility
3Cited by
8References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 6, 1998 |
| Grant date | May 1, 2001 |
| Priority date | — |
| Expiry date | May 6, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2208/00283
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A three stage hydroprocessing process includes two liquid and one vapor reaction stages, both of which produce an effluent comprising liquid and vapor. Both vapor effluents comprise vaporized hydrocarbonaceous material. Fresh hydrogen is used for the hydroprocessing in both liquid stages. The second stage liquid effluent comprises the product liquid. The first stage liquid effluent is the feed for the second stage. The first stage vapor effluent is hydroprocessed in the vapor stage and then cooled to condense and recover at least a portion of the processed vapor as additional product liquid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.