Material treating apparatus utilizing an auger having an interna

Furnaces – Refuse incinerator – With means for advancing or handling refuse or residue

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Details

110253, 198657, 414197, F23G 300

Patent

active

043422691

ABSTRACT:
A material treating apparatus, such as an incinerator, incorporating an auger having an internal air supply system and an internal heat transfer mechanism. The incinerator includes a cylindrical combustion chamber containing a rotatable auger, and waste material is fed to one end of the combustion chamber and is conveyed through the chamber by the auger, while ash and non-combustible residue are discharged from the opposite end of the chamber. The auger is composed of a tubular shaft which carries a hollow spiral flight. Air is introduced into the downstream end of the shaft and flows through the hollow flight and is discharged through outlet ports in the periphery of the flight into the combustion chamber. To cool the auger, water flows within internal passages in the hollow flight. The flight is formed with a forward wall facing downstream and a rear wall which is spaced from the forward wall to define a central air passage. Both the forward and rear walls are composed of generally parallel wall panels which define a plurality of radially spaced water passages which extend the length of the flight. Ports interconnect the water passages and are arranged so that the greatest volume of water flows in the outermost passage.

REFERENCES:
patent: 3942455 (1976-03-01), Wallis
patent: 4009667 (1977-03-01), Tyer et al.
patent: 4231304 (1980-11-01), Hoskinson

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