burner system with controlled stage air separation
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United States of America Patent
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Jul 16, 2013
Grant Date -
Jul 16, 2009
app pub date -
Jan 11, 2008
filing date -
Jan 11, 2008
priority date (Note) -
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Abstract
A low NOx burner system is disclosed that reduces the emission of CO and HC during cold furnace startups, minimizes NOx formation with preheated air, and provides a flat stable flame due to burner design improvements including three stage combustion. The burner system is designed to operate in either a low or high temperature mode by controlling the amount of combustion air provided to stage 1 and stage 2 combustion. The burner system is designed to heat the interior of a furnace for high-temperature combustion/furnace processes, such as aluminum melting and steel processes. The burner system can also be used for low temperature processes at temperatures below the auto-ignition temperature of the fuel and still produce very low CO, HC and NOx emissions.
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