Compact boiler having low NOX emissions

Details Compact boiler having low NOX emissions Compact boiler having low NOX emissions

1992-11-05

1994-08-02

Yuen, Henry C.

Liquid heaters and vaporizers

Heat transmitter

110263, 110264, F22B 2306

Patent

active

053335740

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.

REFERENCES:
patent: 4249470 (1981-02-01), Vatsky
patent: 4351251 (1982-09-01), Brashears
patent: 4367686 (1983-01-01), Adrian
patent: 4438707 (1984-03-01), Delaplace et al.
patent: 4545307 (1985-10-01), Morita et al.
patent: 4838185 (1989-06-01), Flament

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