Patent US3972696A successfully refreshed from Google Patents.
US3972696A
Expired / Lapsed
US
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Flue gas pollution eliminator
Assignee: Individual
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Filing: 1975-07-24
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Granted: 1976-08-03
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Expires: 1995-07-24
Abstract
Abstract This pollution eliminator is comprised of three concentric vertical stacks or chimneys, wherein the outer stack is higher than the inner stack. Exhaust flue gases primarily from a furnace is directed up through the central stack, wherein the hot flue gases rise, as in a conventional chimney. The flue gases, on exiting the central stack, expand laterally wherein the fly ash is captured by the intermediate stack and drops down the annular space formed therebetween. The flue gases, on exiting this intermediate stack, further expand within the outer stack. Means are provided in the annular space between the outer and intermediate stack to cause water vapor to rise therein. The vapor reacts with some of the oxides of the gases from the flue to form acid molecules which are condensed on the upper inner wall of the outer stack. Means are provided, also in the outer stack, to cause the flue gases to spin, to enhance the capture of acid molecules on the wall thereof. To further enhance mixing of the flue gases with the water vapor, the intermediate stack has openings or apertures in its wall, primarily in the region above the center stack to allow water vapor to enter this stack.
Inventors
- 👤 Olindo R. Angelillo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:12
CPC Classifications
F; F23; F23J; F23J15/00; B; B01; B01D; B01D53/00; B01D53/34; Y; Y10; Y10S; Y10S261/00; Y10S261/09; Y10S55/00; Y10S55/30
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
187 words
A device for cleaning pollutants from flue gases, said device comprising: a first chimney for receiving said flue gases for imparting an upward velocity thereto, and for exiting said flue gases from the top of said first chimney; a second chimney disposed surrounding said first chimney and having a height that is substantially higher than and having a diameter that is substantially bigger than said first chimney so that the gases from said first chimney discharge into said second chimney and become decelerated; said second chimney being opened at its lower end to the atmosphere; first means disposed for introducing a water vapor within the annular space formed between said first chimney and said second chimney at a region below the top of said first chimney so that said vapors rise with the atmospheric air to mix with the rising flue gases after the gases are discharged from said first chimney, so that selective ones of said pollutants chemically combine with the water to form an acid; and heat exchange means for cooling the upper wall of said second chimney so that said acid may condense thereon.
Claim 2
Independent Claim
187 words
A device for cleaning pollutants from flue gases, said device comprising: a first chimney for receiving said flue gases for imparting an upward velocity thereto, and for exiting said flue gases from the top of said first chimney; a second chimney disposed surrounding said first chimney and having a height that is substantially higher than and having a diameter that is substantially bigger than said first chimney so that the gases from said first chimney discharge into said second chimney and become decelerated; said second chimney being opened at its lower end to the atmosphere; first means disposed for introducing a water vapor within the annular space formed between said first chimney and said second chimney at a region below the top of said first chimney so that said vapors rise with the atmospheric air to mix with the rising flue gases after the gases are discharged from said first chimney, so that selective ones of said pollutants chemically combine with the water to form an acid; and heat exchange means for cooling the upper wall of said second chimney so that said acid may condense thereon.
Claim 3
Dependent Claim
75 words
The device of claim 1 wherein: said first means comprises an annular water pond disposed exteriorly of said first chimney, having a water surface below the top opening thereof; said second chimney extends down to said water pond and wherein the opening at the lower end are openings disposed above and adjacent to the surface of said water pond to allow ambient air to enter and rise with the water vapor escaping from the pond.
Claim 4
Dependent Claim
87 words
The device of claim 2 wherein said second means further comprises: a plurality of tubular condensers disposed on the interior of said second chimney, and in the region thereof that is above said first chimney; each of said condensers having one open end lower than the other open end, and said lower end communicating with the exterior of said second chimney so that winds can enter said condensers; and a gutter is provided on the inside of said second chimney below said tubes to collect any condensation.
Claim 5
Dependent Claim
61 words
The device of claim 3 wherein: said condensers are disposed vertically with a space between two adjacent tubes; said higher open end of said respective condenser extends at least to the top of said second chimney; said second chimney has a vertically disposed slit formed between two adjacent condensers so that wind currents enter said slits to provide a swirling effect.
Claim 6
Dependent Claim
98 words
The device of claim 4 wherein: a third chimney is disposed concentric between said first and second chimney, and is higher than said first chimney and lower than said second chimney; said water pond is limited to being disposed outside of said third chimney and extends to the outside of said second chimney; said second chimney having a plurality of archways disposed around its lower end, so that the water in said pond flows through the archways; said archways have a height that extends above the water level in said pond so that air currents also flow therethrough.
Claim 7
Dependent Claim
49 words
The device of claim 5 wherein said third chimney has: a plurality of apertures formed therethrough in the upper portion thereof; a metallic annular flange disposed on top of said third chimney and extending inward therearound; and a plurality of vertically disposed metallic rods extending upward from said flange.
Claim 8
Dependent Claim
40 words
The device of claim 6 wherein said apertures are formed with opposing conical surfaces to minimize the resistance of any air currents passing therethrough; said slits are formed with sloping sides to minimize resistance to any air currents passing therethrough.
Claim 9
Dependent Claim
14 words
The device of claim 7 wherein said second chimney has an inward extending flange.
Claim 10
Dependent Claim
43 words
The device of claim 8 wherein a plurality of pilasters are provided around said second chimney and protrude exteriorially therefrom to increase the probability of downward drafts outside said second chimney, thereby increasing the upward drafts of moist air within said second chimney.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-08-03 | 1980-02-02 | 1980-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-03 | 1984-02-02 | 1984-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-03 | 1988-02-02 | 1988-08-03 | $7700.00 | Window Closed / Lapsed |