Furnaces – With fuel treatment means – Preliminary refuse treatment means
Patent
1973-11-15
1977-02-08
Sprague, Kenneth W.
Furnaces
With fuel treatment means
Preliminary refuse treatment means
110 72R, 110 75R, F23G 500, F23L 100, F23L 900
Patent
active
040066932
ABSTRACT:
A combustion furnace particularly for refuse incineration comprises furnace walls which enclose a fire chamber having a grate extending across at least a part of the fire chamber of the furnace. The furnace walls have a portion adjacent the grate which comprises inner and outer spaced metal walls with a hollow space between said walls. A metal shield plate is spaced inwardly from said inner furnace wall and extends around at least a substantial portion of the periphery of the grate which is adjacent the furnace walls and there is an intermediate hollow space between the shield plate and the inner furnace wall. The inner metal furnace wall has openings communicating with the hollow space between the inner and the outer furnace walls and the shield plate has openings communicating with the intermediate hollow space between the shield plate and the inner furnace wall with the fire chamber. Means are provided for supplying air into the hollow space between the inner and outer furnace walls which flows through the openings of the inner wall to the space between the inner wall and the shield and also through the openings of the shield to the furnace chamber so that it both aids in the combustion and in cooling the metal shield plate and the furnace walls.
REFERENCES:
patent: 1565747 (1925-12-01), Miller
patent: 1620488 (1927-03-01), Preston
patent: 2238161 (1941-04-01), Drew et al.
patent: 3395655 (1968-08-01), Guy
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