Fuel gas preheat for excess oxygen maintenance

Details Fuel gas preheat for excess oxygen maintenance Fuel gas preheat for excess oxygen maintenance

1977-10-31

1979-11-20

Dority, Jr., Carroll B.

Combustion

Timer, programmer, retarder or condition responsive control

Of or by burner feed supply heating structure

431 76, F23N 518

Patent

active

041749430

ABSTRACT:
A system of preheating of gaseous fuels to a furnace in which the fuels have a wide range of molecular weights, and corresponding calorific values, and in which all of the combustion air is provided by inspiration, due to the flow energy of the fuel. The invention involves the monitoring of oxygen in the products of combustion moving from the furnace to the stack, or, alternatively, monitoring the molecular weight of the fuel on the inlet line, and controlling the preheating of the fuel in a heat exchanger, so as to maintain a selected temperature of the fuel going to the burners, in accordance with the molecular weight of the fuel.

REFERENCES:
patent: 1562910 (1925-11-01), Hock
patent: 3503553 (1970-03-01), Schomaker
patent: 3561895 (1971-02-01), Michelson

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