Furnaces – Ash receiving and handling devices – Fly ash disposers
Patent
1990-11-21
1992-02-25
Favors, Edward G.
Furnaces
Ash receiving and handling devices
Fly ash disposers
110110, 110259, F23J 100
Patent
active
050903381
ABSTRACT:
Incineration flyash is treated by reducing the organic chlorine compounds contained in the flyash. A cylindrical body equipped with a rotating shaft having a screw conveyor and agitating blades for conveying and agitating the flyash is filled to at least a 75 vol % charge so that contact of the flyash with oxygen is made as small as possible. The flyash is subjected to agitation and heat-treatment at 300.degree. C. or higher. The cylindrical body has a feeding port for the waste incineration flyash and a discharging port for the discharge of the treated flyash. The screw conveyor is at the introducing part and has a pitch that is successively reduced toward the agitating part for charging the flyash in the agitating part at a greater vol. % than that which occurs in the introducing part.
REFERENCES:
patent: 2626856 (1948-07-01), Alles
patent: 4267801 (1981-05-01), Robinson
patent: 4628828 (1986-12-01), Holtham et al.
Hanai Yoshimichi
Harada Yasuaki
Itaya Mazumi
Kamei Hiroshi
Kato Tatuo
Favors Edward G.
Mitsui Engineering & Shipbuilding Co. Ltd.
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