Fluidized-bed device with oxygen-enriched oxidizer
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United States of America Patent
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Feb 9, 2010
Grant Date -
Jan 3, 2008
app pub date -
May 26, 2005
filing date -
May 28, 2004
priority date (Note) -
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Abstract
The invention relates to a fluidized-bed device (F1, F2) provided with a hearth (1, 23) equipped with gas mixture feeds called primary feeds, said gas mixture being enriched with oxygen, and said hearth (1, 23) being provided with a network of two types of primary feed nozzle, a first type of nozzle (B1, B'1) injecting a first gas mixture at a first level close to the hearth (1, 23) and a second type of nozzle (B2, B'2) injecting a second oxygen-enriched gas mixture at a second level above the first level. According to the invention, said second type of nozzle (B2, B'2) consists of a device for mixing oxygen with a second gas component and connected by its lower end to an oxygen feed (11A, 11A') and to a feed of second gas component, and of a device for injecting this mixture into the combustion chamber.
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