Furnaces – Including means to feed solid fuel – Movable grate
Patent
1982-03-09
1984-05-08
Favors, Edward G.
Furnaces
Including means to feed solid fuel
Movable grate
110257, 110258, 110259, 110336, 414157, F23N 1110
Patent
active
044468008
ABSTRACT:
This invention relates to a boiler installation for the combustion of solid fuels, for example forest waste material in the form of e.g. bark and/or chips, peat pellets, coal etc., which installation comprises a furnace located in connection to a heat medium portion and a grate located in the furnace. The grate feeds fuel from a fuel charge opening through the furnace while the fuel is being combusted, from which furnace the flue gases flow to the heat medium portion and continue to a chimney. The installation also includes at least one intake for controlled supply of combustion air in the form of at least primary and secondary combustion air. In order to improve the efficiency degree of such boiler installations and to render possible efficient and complete combustion of forest waste material and other biologic fuels, which may have a high moisture content, the rear portion of the grate means of the boiler installation, seen in the direction of movement, is located outside of the furnace space proper but connected thereto for forming a zone in connection to the charge opening for a certain drying of the fuel before it is fed into the furnace by the grate. The grate comprises transverse dogs running on a grate plane for advancing the fuel through the furnace, which grate plane is located above an arrangement for the supply of the primary combustion air from below to the fuel, and below the air intakes for the secondary combustion air.
REFERENCES:
patent: 1614237 (1927-01-01), Grunert et al.
patent: 3063696 (1962-11-01), Culling
patent: 4193355 (1980-03-01), Dondeyne et al.
patent: 4308034 (1981-12-01), Hoang
Favors Edward G.
HB Megaron
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