Regeneration of cracking catalyst
US4324688A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 21, 1980 |
| Grant date | Apr 13, 1982 |
| Priority date | — |
| Expiry date | Apr 21, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P30/40
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process for the regeneration of coke-contaminated fluidizable catalytic cracking catalyst wherein the regeneration flue gas having a reduced concentration of carbon monoxide and regenerated catalyst having a reduced residual carbon content are obtained. By this method a fluidized dense catalyst phase of coke-contaminated catalyst is regenerated with an excess amount of oxygen-containing regeneration gas at an elevated temperature such that there is a controlled afterburn of carbon monoxide to carbon dioxide in the dilute catalyst phase whereby a flue gas having a carbon monoxide content of from 0 to 500 ppm is obtained. The residence time of catalyst in the fluidized dense catalyst phase is adjusted to provide a low level of residual carbon-on-regenerated-catalyst.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.