Low NOx Fuel Injection for an Indurating Furnace
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United States of America Patent
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Issued Date -
Nov 15, 2012
app pub date -
Jun 11, 2012
filing date -
Mar 24, 2009
priority date (Note) -
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Abstract
An indurating furnace has a heating station and an air passage leading to the heating station. A draft of preheated recirculation air is driven through the passage toward the heating station, and is mixed with fuel gas to form a combustible mixture of preheated recirculation air and fuel gas that ignites in the passage. This is accomplished by injecting the fuel gas into the passage in a stream that does not form a combustible mixture with the preheated recirculation air before entering the passage.
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