Combination of fuels

Details Combination of fuels Combination of fuels

1982-08-02

1985-03-12

Dority, Jr., Carroll B.

Combustion

Process of combustion or burner operation

Decarbonizing, cleaning or purging

431 10, 431352, 60 3902, 60732, F23J 700

Patent

active

045042110

ABSTRACT:
NO.sub.x emissions are reduced in the combustion of fuels by carrying out the combustion in at least four serially connected combustion zones, including at least three fuel-rich zones followed by a fuel-lean zone. In accordance with another aspect of the present invention, SO.sub.x emissions are reduced in the burning of a normally solid fuel, containing significant amounts of SO.sub.x precursors, by adding a sulfur scavenger to the fuel and thereafter burning the fuel in at least four serially connected combustion zones, including at least three fuel-rich zones followed by a last fuel-lean zone, and carrying out the combustion of the fuel in at least four combustion zones.

REFERENCES:
patent: 1910735 (1933-05-01), Zikesch
patent: 2398654 (1946-04-01), Lubbock et al.
patent: 2958194 (1960-11-01), Bayley
patent: 3746498 (1973-07-01), Stengel
patent: 3850569 (1974-11-01), Alquist
patent: 4113425 (1978-09-01), Von Linde et al.
patent: 4235585 (1980-11-01), Anderson
patent: 4382771 (1983-05-01), Carr
patent: 4395223 (1983-07-01), Okigami et al.

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