Compact boiler having low NO.sub.x emissions
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United States of America Patent
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-
Dec 5, 1995
Issued Date -
N/A
app pub date -
Mar 18, 1994
filing date -
Sep 11, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
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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