Process for fluid catalytic cracking of heavy fraction oil
US5951850A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | May 28, 1997 |
| Grant date | Sep 14, 1999 |
| Priority date | — |
| Expiry date | May 28, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G11/18
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A heavy fraction oil is catalytically cracked by contacting the oil with a catalyst containing an ultrastable Y-type zeolite, in a fluid catalytic cracking apparatus having a regenerating zone, a reaction zone, a separation zone and a stripping zone and under conditions that a reaction zone outlet temperature is in a range of 550 to 700.degree. C., a catalyst/oil ratio is in a range of 15 to 100 wt/wt, and a difference between a regenerating zone catalyst concentration phase temperature (1) and the reaction zone outlet temperature (2) is in a range of 5 to 150.degree. C. According to the fluid catalytic cracking process, an amount of dry gases generated by the thermal cracking of the heavy fraction oil can be lessened while a yield of light fraction olefins can be enhanced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.