Furnaces – Ash receiving and handling devices – Fly ash disposers
Patent
1989-12-08
1991-09-03
Yuen, Henry C.
Furnaces
Ash receiving and handling devices
Fly ash disposers
110264, F23J 100
Patent
active
050442864
ABSTRACT:
A method of recycling fly ash as slag in a wet bottom furnace is described. The furnace may have a cyclone furnace, a pulverized coal furnace, or any other type of furnace producing wet slag. All or part of the collected fly ash is collected and returned to the furnace and combined with enough fuel to melt the ash. Melted ash directed against a wall, floor or side of the cyclone or furnace will flow to the bottom of the furnace so as to facilitate the liquid slag. The fly ash may be collected by an electrostatic precipitator, baghouse, cyclone (multiclone) or other device. The fly ash may be returned to the furnace or the cyclone using air, flue gas, steam, fuel, or other gas as a carrier.
REFERENCES:
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patent: 2263433 (1941-11-01), Allen
patent: 2917011 (1959-12-01), Korner
patent: 4671192 (1987-06-01), Hoffert et al.
patent: 4796545 (1989-01-01), Hashizaki et al.
patent: 4800825 (1989-01-01), Kuenzly
Breen Bernard P.
Gabrielson James E.
Schrecengost Robert A.
Consolidated Natural Gas Service Company, Inc.
Yuen Henry C.
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