Process to eliminate production of fly ash by wet bottom boilers

Details Process to eliminate production of fly ash by wet bottom boilers Process to eliminate production of fly ash by wet bottom boilers

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:
patent: 2024197 (1935-12-01), Bailey et al.
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

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