High severity fluidized catalytic cracking systems and processes for producing olefins from petroleum feeds
US10889768B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 10, 2019 |
| Grant date | Jan 12, 2021 |
| Priority date | — |
| Expiry date | Jan 10, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G2400/22
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Systems and processes are disclosed for producing petrochemical products, such as ethylene, propene and other olefins from crude oil in high severity fluid catalytic cracking (HSFCC) units. Processes include separating a crude oil into a light fraction and a heavy fraction, cracking the light fraction and heavy fraction in separation cracking reaction zones, and regenerating the cracking catalysts in a two-zone regenerator having a first regeneration zone for the first catalyst (heavy fraction) and a second regeneration zone for the second catalyst (light fraction) separate from the first regeneration zone. Flue gas from the first catalyst regeneration zone is passed to the second regeneration zone to provide additional heat to raise the temperature of the second catalyst of the light fraction side. The disclosed systems and processes enable different catalysts and operating conditions to be utilized for the light fraction and the heavy fraction of a crude oil feed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.