Method and apparatus for producing a useful stream of hot gas from a fluidized bed combustor while controlling the bed's temperature
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United States of America Patent
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Feb 28, 1984
Grant Date -
N/A
app pub date -
May 18, 1981
filing date -
May 18, 1981
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Method and apparatus are disclosed for producing a useful stream of hot gas from a fluidized bed combustor and controlling bed temperature by introducing cooling gas into the freeboard region of the combustor. The cooling gas is introduced by a plurality of inlet ports located within the combustion chamber or about its periphery. The cooling gas contacts particulate matter in the freeboard region, extracting heat therefrom. Cooled particulate matter either falls back into the bed or is returned to the bed from a separator downstream of the combustion chamber.
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