Fluidized bed firing unit
US4323037A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 18, 1979 |
| Grant date | Apr 6, 1982 |
| Priority date | — |
| Expiry date | Nov 18, 1999 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J8/386
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A fluidized bed firing unit, in which a fluidized bed of comparatively inert material is maintained in a container having cooled or insulated walls and a flow-bottom by means of air entering through flow nozzles in the bottom, the fuel being fed to the fluidized bed after the latter has been heated to the ignition temperature of the fuel. The air supplied through the air nozzles in the flow bottom for the purpose of producing the fluidized bed, is forced into at least one component of motion causing the fluidized bed to circulate in a horizontal plane while the fuel is fed in the lower part of the fluidized bed, preferably in the area of approximately 20% of the bed height. The motion component moving the fluidized bed in the circulating motion is preferably produced by off center feeding-in of additional air. It is expedient if at least the air nozzles in the area of the container walls are inclined with respect to vertical in the same direction. If desired, all air nozzles can be inclined with respect to the vertical in the same movement direction and/or the inclined nozzles be arranged in the form of a single or multiple spiral in the flow bottom. The inclined nozzles are prefer…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.