Fluidized bed combustion system having an improved loop seal valve
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United States of America Patent
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Apr 7, 1998
Grant Date -
N/A
app pub date -
Jan 13, 1997
filing date -
Aug 11, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A fluidized bed combustion system in which a separator receives a mixture of flue gases and entrained particulate material from a fluidized bed in a furnace. A loop seal valve, in the form of three ducts, connects an outlet of the separator to the furnace for recycling the separated particulate material back to the furnace. One of the ducts extends vertically from the separation and another duct extends horizontally from the latter duct and connects this latter duct to an angled duct which registers with an opening in the furnace wall. The last duct is angled downwardly to provide an increased throughput when compared to standard loop seal devices.
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