Integrated staged catalytic cracking and hydroprocessing process (JHT-9614)
US5770044A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 23, 1996 |
| Grant date | Jun 23, 1998 |
| Priority date | — |
| Expiry date | Aug 23, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G69/06
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Disclosed is a catalytic cracking process which includes more than one catalytic cracking reaction step. The process integrates a hydroprocessing step between the catalytic cracking reaction steps in order to maximize olefins production, distillate quality and octane level of the overall cracked product. Preferably, the hydroprocessing step is included between the reaction stages, and a portion of the hydroprocessed products, i.e., a naphtha and mid distillate fraction, is combined with cracked product for further separation and hydroprocessing. It is also preferred that the first catalytic cracking reaction step be a short contact time reaction step.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.