Two stage hydrocracking process
US6217746A · kind A · utility
88Cited by
3References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 16, 1999 |
| Grant date | Apr 17, 2001 |
| Priority date | — |
| Expiry date | Aug 16, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G65/12
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A two stage hydrocracking process is characterized by operation of the second hydrocracking zone at a reduced pressure, which is conducive to cracking the highly paraffinic effluent of the first hydrocracking zone. The process is also characterized by the passage of the partially compressed hydrogen makeup gas stream into the second hydrocracking zone followed by compressing the gas recovered from the second hydrocracking zone effluent to form the makeup gas to the first stage hydrocracking zone. There is no recycle gas stream for the second hydrocracking zone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.