Uni-directional anti-backsifting fluidization nozzle and a fluidized bed system utilizing same
US5286188A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 11, 1992 |
| Grant date | Feb 15, 1994 |
| Priority date | — |
| Expiry date | Sep 11, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/792
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A fluidized bed system in which a plate is disposed in an enclosure and is adapted to support particulate material. A plurality of nozzles are supported by the plate for receiving air and directing the air through the plate and into the particulate material to fluidize same. Each of the nozzles includes a vertical tubular portion extending upwardly from the plate for receiving air from the air plenum, an angled tubular portion extending downwardly and outwardly from the vertical tubular portion for discharging the air, and a valve member movably housed in the vertical tubular portion, which permits air flow during operation but, upon shutdown, seals the nozzle and prevents backflow or backsifting of the particulate material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.