Compact boiler having low NOX emissions
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United States of America Patent
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-
Aug 2, 1994
Issued Date -
N/A
app pub date -
Nov 5, 1992
filing date -
Sep 11, 1991
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Method and apparatus for reducing the NOX levels in stack emissions of compact boilers and fluid heaters through selective injection of exhaust flue gases into the combustion process. Flue gas injection into the primary and secondary air of the burner along with flue gas injection directly into the combustion process is utilized. Injection of generated steam from a compact boiler, selectively injected into the combustion process is also provided.
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