Fuel firing method

Details Fuel firing method Fuel firing method

1979-08-27

1981-01-27

Yuen, Henry C.

Furnaces

Process

Burning pulverized fuel

110263, 110261, 110344, F23K 100, F23D 100

Patent

active

042468531

ABSTRACT:
A method of operating a pulverized coal furnace wherein the coal is introduced with minimal oxygen through an intermediate zone of the furnace which also has a relatively low oxygen content. The carbon particles are projected into an upstream portion of the furnace where secondary air is introduced to burn the carbon particles. The combustion products pass upwardly through the intermediate zone to a downstream zone where tertiary air is added to complete combustion.

REFERENCES:
patent: 1756321 (1930-04-01), Cross
patent: 1819174 (1931-08-01), Jacobus
patent: 1954351 (1934-04-01), Dornbrook et al.
patent: 2259967 (1941-10-01), Vogel-Jorgensen
patent: 2293736 (1942-08-01), Heller
patent: 2511587 (1950-06-01), Jackson
patent: 3048131 (1962-08-01), Handgrove
patent: 3246635 (1966-04-01), Powell
patent: 3688747 (1972-09-01), Connell
patent: 4060376 (1977-11-01), Peredi
patent: 4150631 (1979-04-01), Frey et al.

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