Heavy oil catalytic cracking process and apparatus
US4917790A · kind A · utility
50Cited by
10References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 10, 1989 |
| Grant date | Apr 17, 1990 |
| Priority date | — |
| Expiry date | Apr 10, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G11/182
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A fluidized catalytic cracking process and apparatus operates with a two stage hot stripper between the reactor and catalyst regenerator. Addition of hot, regenerated catalyst to spent catalyst from the reactor heats the spent catalyst in the first stripping stage, which preferably uses steam stripping gas. The second stage of stripping occurs about a heat removal means, such as a stab-in heat exchanger tube bundle, which removes heat from the catalyst during the second stage of stripping. Steam or flue gas may be used in the second stripping stage to fluidize catalyst, improve heat transfer and simultaneously strip the catalyst.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.