Ammonia removal from fly ash
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United States of America Patent
Stats
-
Jun 29, 2004
Grant Date -
N/A
app pub date -
Jul 16, 2001
filing date -
Aug 17, 1999
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A method and apparatus for the application of beat to remove ammonia compounds from fly ask, thereby making the fly ash a marketable product is disclosed. The method includes the steps of providing an amount of fly ash wherein at least a portion of the amount of fly ash comprises particulates having ammonia compounds affixed to the particulates, and exposing the fly ash to flowing air having a temperature of at least 1,500.degree. F. (815 .degree. C.) such that the fly ash is maintained in the flowing air until the fly ash reaches a temperature of at last 900.degree. F. (482 .degree. C.). The apparatus (8,9) includes a source of fly ash (10) comprising particulates having ammonia compounds affixed to at least some of the fly ash particulates, a beating chamber (17) including a treatment bed comprising a floor (20) having openings a fly ash supply conduit (16) in communication with the heating chamber (17) and the source of fly ash (10) for transferring fly ash from the source of fly ash to the treatment bed of the heating chamber, a source of heated air (45), an air supply conduit (55) in communication with the source of heated of heated air (45) and the heating chamber (17) for providing a flow of heated air to the treatment bed of the beating chamber for contacting the fly ash on the treatment bed with the flow of air, a heated air conduit (27) in communication with the beating chamber (17) for transferring the flow of heated air form the heating chamber, and an ash removal conduit (31) in communication with the heating chamber (17) for transferring heated fly ash from the heating chamber.

First Claim
Family

- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
---|---|---|
WISCONSIN ELECTRIC POWER COMPANY | 231 W MICHIGAN AVENUE MILWAUKEE WI 53201 |
International Classification(s)

- [Classification Symbol]
- [Patents Count]
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Fisher, Bryan C | San Antonio, TX | 4 | 41 |
Ramme, Bruce W | Okauchee, WI | 13 | 339 |
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Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
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Fee | Large entity fee | small entity fee | micro entity fee |
---|---|---|---|
Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
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