Ammonia removal from fly ash

Furnaces – Ash receiving and handling devices – Fly ash disposers

Reexamination Certificate

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Details

C110S190000, C110S185000

Reexamination Certificate

active

06945179

ABSTRACT:
An apparatus for the application of heat to remove ammonia compounds from fly ash is disclosed. The apparatus includes a source of fly ash comprising particulates having ammonia compounds affixed to the fly ash particulates, a heating chamber including a treatment bed comprising a media having openings, a fly ash supply conduit for transferring fly ash from the source of fly ash to the treatment bed of the heating chamber, a source of heated air, an air supply conduit for providing a flow of heated air to the treatment bed of the heating chamber for contacting the fly ash on the treatment bed with the flow of heated air, a heated air conduit in communication with the heating chamber for transferring the flow of heated air from the heating chamber, and an ash removal conduit in communication with the heating chamber for transferring heated fly ash from the heating chamber.

REFERENCES:
patent: 4911900 (1990-03-01), Horch et al.
patent: 5003931 (1991-04-01), Huschauer
patent: 5837052 (1998-11-01), Oates et al.
patent: 3425070 (1986-01-01), None
patent: 3526756 (1987-01-01), None
patent: 3708941 (1988-09-01), None
patent: 3732026 (1989-04-01), None
patent: 3802884 (1989-10-01), None
patent: 56-161823 (1981-12-01), None
patent: 406082022 (1994-06-01), None
patent: 11-188330 (1999-07-01), None
patent: WO94/08892 (1994-04-01), None
patent: WO 9408892 (1994-04-01), None
PCT Search Report for PCT/US00/22398.
English Language Translation of DE 3802884.
English Language Translation of DE 3526756.
English Language Abstract for DE 3425070.
English Language Abstract for DE 3732026.
English Language Abstract for DE 3708941.
Patent Abstract for Japanese Publication No. 55054075 published Apr. 21, 1980.
Patent Abstracts of Japan for JP 56-161823.
Patent Abstracts of Japan for JP 11-188330.
English Language Translation for JP 56-161823.

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