Patent ID: 7658167
Filing Date: 2010-02-09
Classification: B01J,F23C,F23L,Y02E

Abstract:
1. In a fluidized-bed device including a combustion chamber and a hearth equipped with primary gas feeds wherein the gas mixture is enriched with oxygen, the improvement comprising: a first type of nozzle through which a first gas mixture is injected at a first level located close to the hearth; and a second type of nozzle through which an oxygen-enriched second gas mixture is injected at a second level located above the first level that is located close to the hearth, the second type of nozzle including a first device for mixing oxygen with a second gas component and a second device for injecting the mixture of oxygen and the second gas component into the combustion chamber of the fluidized-bed device, and the first device having a lower end connected to an oxygen feed and to a feed of a second gas component.