System for controlling combustibles and O.sub.2 in the flue gase

Details System for controlling combustibles and O.sub.2 in the flue gase System for controlling combustibles and O.sub.2 in the flue gase

1983-11-14

1985-01-08

Dority, Jr., Carroll B.

Combustion

Process of combustion or burner operation

Controlling or proportioning feed

431 76, F23N 500

Patent

active

044925590

ABSTRACT:
A control system for controlling the fuel/air ratio of a fuel/air mixture for a combustion process which produces flue gases having a combustible content and an oxygen content, comprises selecting desired combustible and oxygen contents for the flue gases which correspond to efficient combustion, simultaneously sensing both actual combustion and actual oxygen content in the flue gases, and controlling the fuel/air ratio in accordance only with the sensed combustible and oxygen content to adjust the ratio until the selected set points are reached. The combustible content can be utilized to regulate the oxygen content set point.

REFERENCES:
patent: 4147500 (1979-04-01), Karlsoen
patent: 4162889 (1979-07-01), Shigemura
patent: 4235171 (1980-11-01), Leonard
patent: 4360336 (1982-11-01), Shepherd
patent: 4362499 (1982-12-01), Nethery
patent: 4436506 (1984-03-01), Berkhof

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