US5676716A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for mixing a tank and improving air/liquid contact in an oxidized system
Assignee: Babcock and Wilcox Co
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Filing: 1995-10-30
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Granted: 1997-10-14
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Expires: 2015-10-30
Abstract
Abstract An apparatus to mix a slurry mixture with an oxidization air within a reaction tank of a wet scrubber spray tower of a flue gas desulfurization system for a furnace. The apparatus improves the contact between forced oxidization air and slurry mixture within the reaction tank.
Inventors
- 👤 Wadie F. Gohara
- 👤 Kevin J. Rogers
- 👤 II Fred C. Owens
- 👤 Steven Feeney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 17:00
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/34; B01D53/46; B01D53/48; B01D53/50; B01D53/501; B01D53/504; B01D53/74; B01D53/77; B01D53/79; B01D2251/00; B01D2251/10; B01D2251/11; Y; Y10; Y10S; Y10S261/00; Y10S261/09
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
136 words
An apparatus for use in a flue gas desulfurization system for a furnace for mixing oxidization air with a liquid in a tank having a side wall, upper end, lower end, and a minimum liquid level, the apparatus comprising: means for removing the liquid from the tank at a point adjacent the lower end of the tank; means for supplying oxidization air to the tank adjacent the lower end; and means for supplying the liquid to each of a plurality of conduits positioned above said removing means, each connected to the side wall of the tank at one of a plurality of openings spaced relative to each other between the lower end and the minimum liquid level, the openings being circumferentially and vertically spaced relative to each other and having a downward tangential component of discharge.
Claim 2
Independent Claim
136 words
An apparatus for use in a flue gas desulfurization system for a furnace for mixing oxidization air with a liquid in a tank having a side wall, upper end, lower end, and a minimum liquid level, the apparatus comprising: means for removing the liquid from the tank at a point adjacent the lower end of the tank; means for supplying oxidization air to the tank adjacent the lower end; and means for supplying the liquid to each of a plurality of conduits positioned above said removing means, each connected to the side wall of the tank at one of a plurality of openings spaced relative to each other between the lower end and the minimum liquid level, the openings being circumferentially and vertically spaced relative to each other and having a downward tangential component of discharge.
Claim 3
Dependent Claim
32 words
An apparatus according to claim 1, wherein, at least three of the openings are located between 3 feet below the minimum liquid level and 3 feet above the oxidization air supplying means.
Claim 4
Dependent Claim
54 words
An apparatus according to claim 1, wherein the means for removing the liquid from the tank comprises a sump pump having a suction inlet and a discharge outlet; and a sump conduit attached at a first end to the sump pump suction inlet and having an inlet end which is located within the tank.
Claim 5
Dependent Claim
28 words
An apparatus according to claim 3, wherein the liquid supplying means comprises a header attached between each of the plurality of conduits and the sump pump discharge outlet.
Claim 6
Dependent Claim
33 words
An apparatus according to claim 3, wherein the means for supplying oxidization air comprises a plurality of sparge tubes within the tank, each tube connected to an oxidization air source outside the tank.
Claim 7
Dependent Claim
29 words
An apparatus according to claim 5, wherein said sparge tubes are located at least 4 feet above the lower end of the tank and below the minimum liquid level.
Claim 8
Dependent Claim
25 words
An apparatus according to claim 6, wherein the inlet end of the sump conduit is substantially 2 feet above the lower end of the tank.
Claim 9
Dependent Claim
20 words
An apparatus according to claim 5, wherein said sparge tubes are located substantially adjacent the lower end of the tank.
References Cited (Backward Citations)
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US4427553A
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-10-13 | 2001-04-14 | 2001-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-10-13 | 2005-04-14 | 2005-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-10-13 | 2009-04-14 | 2009-10-14 | $7700.00 | Window Closed / Lapsed |