06505567 is referenced by 90 patents.

A circulating fluidized bed steam generator

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and a method for operating the circulating fluidized bed steam generator are provided which offer the flexibility to use carbon dioxide (CO

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) both as a desirable end product and as support to the combustion process. The method includes the step of introducing a substantially pure oxygen feed stream into the circulating fluidized bed steam generator

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and the step of combusting a fuel in the presence of the substantially pure oxygen feed stream to produce a flue gas having carbon dioxide and water vapor as its two largest constituent elements by volume. The method also includes the step of passing the flue gas through an oxygen feed stream pre-heater

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at which heat from the flue gas is transferred to the oxygen feed stream. Furthermore, the method includes the step of separating the flue gas into an end product portion and a recycling portion. The method additionally includes cooling and compressing the end product portion of the flue gas so as to yield carbon dioxide in a liquid phase and directing the recycling portion of the flue gas to the circulating fluidized bed steam generator

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to contribute to the combustion process therein.

Title
Oxygen fired circulating fluidized bed steam generator
Application Number
9/994121
Publication Number
6505567 (B1)
Application Date
November 26, 2001
Publication Date
January 14, 2003
Inventor
John L Marion
W. Simsbury
CT, US
Greg N Liljedahl
Tariffville
CT, US
David K Anderson
E. Longmeadow
MA, US
Agent
Russell W Warnock
US
Assignee
ALSTOM
US
IPC
F23J 11/00
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