Combustion – Process of combustion or burner operation – Controlling or proportioning feed
Patent
1980-02-21
1983-01-18
Dority, Jr., Carroll B.
Combustion
Process of combustion or burner operation
Controlling or proportioning feed
431 89, F23N 102
Patent
active
043690262
ABSTRACT:
A desired oxygen/fuel ratio is maintained for a combustion process when the heat required from the combustion process is substantially constant. Excess oxygen is provided to the combustion process in response to an increasing fuel flow resulting from an increase in the heat required of the combustion process by initiating an increase in the flow of an oxygen-containing fluid before the fuel flow rate is increased in response to an increasing heat requirement. When the heat required of the combustion process is decreasing, the reduction in the flow rate of the fuel is initiated prior to initiating a reduction in the flow rate of the oxygen-containing fluid. In this manner, excess oxygen is provided to a combustion process even when the fuel flow rate is not at a steady-state condition.
REFERENCES:
patent: 3236449 (1966-02-01), Brunner
patent: 3420510 (1969-01-01), Griem
patent: 3602487 (1971-08-01), Johnson
patent: 3607117 (1971-09-01), Shaw
patent: 4069413 (1978-01-01), Rutledge et al.
Leeds & Northrup Application Memo E6.0001-AM, Nov. 1976-Centry Lead-Lag Fuel Air Ratio for Combustion Processes.
Oil & Gas Journal, Air-Preheater System Controls Heater Fuel/Air Ratio, _C. D. Spangler, B. A. Christensen, Continental Oil Co., Petroleum Publishing Co., Jan. 5, 1976.
Combustion Optimizers-Forney Industrial Systems and Products Div., 14211 Proton Rd., Dallas, Texas 75240.
Hachmuth Henry K.
Morgan John A.
Dority Jr. Carroll B.
Phillips Petroleum Company
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