Circulating fluidized bed combustion system including a heat exchange chamber between a separating section and a furnace section
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United States of America Patent
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-
Oct 23, 2001
Grant Date -
N/A
app pub date -
Mar 3, 2000
filing date -
Mar 3, 2000
priority date (Note) -
Expired
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Abstract
A top-supported circulating fluidized bed boiler system includes a furnace, having sidewalls of a tube wall construction, for combusting fuel and producing combustion products, a particle separator, connected to the furnace, for separating particles from the combustion products from the furnace, an external, preferably non-cooled, heat exchange chamber connected to the particle separator for removing heat from the combustion products, a return duct, connected to the heat exchange chamber, for returning particles separated by the separator to the furnace, a rigid support construction for supporting elements of the system, and a suspension arrangement for suspending the heat exchange chamber from the rigid support construction. The suspension arrangement includes, for preferably 60% or more of its length, at least one of steam tubes and water tubes at a temperature of about 300 to about 550.degree. C.
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