Method of regulating the amount of underfire air for combustion of wood fuels in spreader-stroke boilers
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United States of America Patent
Stats
-
Dec 30, 1980
Grant Date -
N/A
app pub date -
Dec 4, 1978
filing date -
Dec 4, 1978
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method of metering underfire air for increasing efficiency and reducing particulate emissions from wood-fire, spreader-stoker boilers is disclosed. A portion of the combustion air, approximately one pound of air per pound of wood, is fed through the grate into the fuel bed, while the remainder of the combustion air is distributed above the fuel in the furnace, and the fuel bed is maintained at a depth sufficient to consume all oxygen admitted under fire and to insure a continuous layer of fresh fuel thereover to entrap charred particles inside the fuel bed.
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