Apparatus and process for carbon removal from fly ash

Details Apparatus and process for carbon removal from fly ash Apparatus and process for carbon removal from fly ash

1996-11-25

1998-05-12

Bennett, Henry A.

Furnaces

Process

Treating fuel constituent or combustion product

110348, 110165A, F23J 300

Patent

active

057493081

ABSTRACT:
A new apparatus and process for efficient removal of carbon from fly ash has been developed, whereby carbon removal occurs through oxidation as combustion. The ignition of the carbon is accomplished by bulk heating and molecular impingement of a suspended layer of fly ash by a heated oxidizing gas stream, and the desired level of carbon burnout is accomplished by maintenance of combustion conditions.

REFERENCES:
patent: 4663507 (1987-05-01), Trerice
patent: 4705409 (1987-11-01), Trerice
patent: 4790250 (1988-12-01), Turner
patent: 5160539 (1992-11-01), Cochran
patent: 5320050 (1994-06-01), Ishida et al.
patent: 5390611 (1995-02-01), John
J.W. Cochran & T.J. Boyd, "Beneficiation of Fly Ash By Carbon Burnout", published in abstract form as EPRI Technical Brief TC 3497-021 (Dec. 1992).
D.R. Whitlock, "Electrostatic Separation of Unburned Carbon From Fly Ash", (date unknown).

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