Oxygen-containing gas distribution apparatus employed in fluidized bed regeneration of carbon-contaminated catalysts
US4032300A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 9, 1976 |
| Grant date | Jun 28, 1977 |
| Priority date | — |
| Expiry date | Apr 9, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S423/16
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An oxygen-containing gas distribution apparatus is dicslosed which can be employed in the fluidized bed regeneraton of carbon-contaminated catalysts, such as cracking catalysts.Said apparatus comprises a plurality of gas discharge nozzles affixed to at least one manifold member substantially horizontally disposed at the lower end of the regeneration chamber, said nozzles being restricted in internal cross-sectional area in their upstream portion connected to the manifold member and expanded in the internal cross-sectional area of their downstream portion such that a) the numerical ratio of the difference between the diameter of the downstream portion and the diameter of the upstream portion divided by the length of the downstream portion taken in the direction of gas flow does not exceed 0.18 and b) the ratio of the diameter of the upstream portion to its length taken in direction of gas flow does not exceed 1.67.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.