Patent US3881898A successfully refreshed from Google Patents.
US3881898A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas treatment
Assignee: WLTD Ltd
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Filing: 1973-01-18
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Granted: 1975-05-06
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Expires: 1993-01-18
Abstract
Abstract In the apparatus and method disclosed, very hot, moist gas under pressure from a blast furnace exhaust or the like is passed through a scrubber that is mounted on top of a high pressure chamber. A plurality of conduits containing venturis connect the high pressure chamber with the lower end of a low pressure chamber. The gas pressure is reduced as the gas flows through the conduits and moisture is removed due to the reversal of gas flow entering the conduits. The flow is again reversed as the gas leaves the conduits removing additional moisture. Further cooling occurs as the gas flows upwardly through filters in the low pressure chamber. To reach the exit from the apparatus, an additional reversal in gas flow direction occurs.
Inventors
- 👤 Kenneth Darby
- 👤 Bernard Tate
- 👤 Charles Graham Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:20
CPC Classifications
B; B01; B01D; B01D47/00; B01D47/10; Y; Y10; Y10S; Y10S261/00; Y10S261/54
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
244 words
Gas treating apparatus including an upright tower having a top, a bottom and a generally cylindrical side wall extending therebetween comprising: a first generally conical member spaced from said top and connected to said side wall to define a high pressure chamber with said top and providing a first reservoir for collection of moisture; a second generally conical member located below said first conical member connected to said side wall defining a region between said conical members and spaced from said bottom defining a low pressure chamber with said bottom; said bottom being of generally conical shape providing a second reservoir for collection of moisture; a gas inlet member extending through said top into said high pressure chamber; conduit means having an inlet located in said high pressure chamber, extending through said first and second conical members interiorly of said side wall, and having an outlet in said low pressure chamber proximate said second reservoir; gas pressure reducing means located in said conduit means; spray means for spraying liquid into said conduit means; cooling means in said low pressure chamber for reducing the temperature of the gas; a gas outlet member extending from said low pressure chamber through said bottom and through said second reservoir, said outlet member having an inlet end located proximate said second generally conical member and an outlet end located exteriorly of said bottom; and, a door in said side wall between said conical members providing access to said region.
Claim 2
Dependent Claim
244 words
Gas treating apparatus including an upright tower having a top, a bottom and a generally cylindrical side wall extending therebetween comprising: a first generally conical member spaced from said top and connected to said side wall to define a high pressure chamber with said top and providing a first reservoir for collection of moisture; a second generally conical member located below said first conical member connected to said side wall defining a region between said conical members and spaced from said bottom defining a low pressure chamber with said bottom; said bottom being of generally conical shape providing a second reservoir for collection of moisture; a gas inlet member extending through said top into said high pressure chamber; conduit means having an inlet located in said high pressure chamber, extending through said first and second conical members interiorly of said side wall, and having an outlet in said low pressure chamber proximate said second reservoir; gas pressure reducing means located in said conduit means; spray means for spraying liquid into said conduit means; cooling means in said low pressure chamber for reducing the temperature of the gas; a gas outlet member extending from said low pressure chamber through said bottom and through said second reservoir, said outlet member having an inlet end located proximate said second generally conical member and an outlet end located exteriorly of said bottom; and, a door in said side wall between said conical members providing access to said region.
Claim 3
Dependent Claim
19 words
The apparatus of claim 1 and also including insulation located in said region whereby said region is sound insulated.
Claim 4
Dependent Claim
277 words
Gas treating apparatus including an upright tower having a top, a bottom and a generally cylindrical side wall extending therebetween comprising: a first generally conical member spaced from said top and connected to said side wall to define a high pressure chamber with said top and providing a first reservoir for collection of moisture; a second generally conical member located below said first conical member connected to said side wall defining a region between said conical members and spaced from said bottom defining a low pressure chamber with said bottom; said bottom being of generally conical shape providing a second reservoir for collection of moisture; a gas inlet member extending through said top into said high pressure chamber; conduit means having an inlet located in said high pressure chamber, extending through said first and second conical members interiorly of said side wall, and having an outlet in said low pressure chamber proximate said second reservoir; gas pressure reducing means located in said conduit means; cooling means in said low pressure chamber for reducing the temperature of the gas; a gas outlet member extending from said low pressure chamber through said bottom and through said second reservoir, said outlet member having an inlet end located proximate said second generally conical member and an outlet end located exteriorly of said bottom; shield means in said high pressure chamber located relatively close to and above the inlet of said conduit means for preventing the direct flow of gas from said gas inlet member into said conduit means; and, liquid spray means located in said shield means for reducing the temperature of the gas entering and flowing through said conduit means.
Claim 5
Dependent Claim
277 words
Gas treating apparatus including an upright tower having a top, a bottom and a generally cylindrical side wall extending therebetween comprising: a first generally conical member spaced from said top and connected to said side wall to define a high pressure chamber with said top and providing a first reservoir for collection of moisture; a second generally conical member located below said first conical member connected to said side wall defining a region between said conical members and spaced from said bottom defining a low pressure chamber with said bottom; said bottom being of generally conical shape providing a second reservoir for collection of moisture; a gas inlet member extending through said top into said high pressure chamber; conduit means having an inlet located in said high pressure chamber, extending through said first and second conical members interiorly of said side wall, and having an outlet in said low pressure chamber proximate said second reservoir; gas pressure reducing means located in said conduit means; cooling means in said low pressure chamber for reducing the temperature of the gas; a gas outlet member extending from said low pressure chamber through said bottom and through said second reservoir, said outlet member having an inlet end located proximate said second generally conical member and an outlet end located exteriorly of said bottom; shield means in said high pressure chamber located relatively close to and above the inlet of said conduit means for preventing the direct flow of gas from said gas inlet member into said conduit means; and, liquid spray means located in said shield means for reducing the temperature of the gas entering and flowing through said conduit means.
Claim 6
Dependent Claim
53 words
The gas treating apparatus of claim 3 and also including: scrubbing means on said tower for cleaning and reducing the temperature of the gas in said gas inlet member; and, second gas pressure reducing means located in said gas inlet member for decreasing the pressure of the gas entering the high pressure chamber.
Claim 7
Dependent Claim
60 words
The gas treating apparatus of claim 4 and also including packing located in said low pressure chamber engaging the side wall of said tower, extending across said tower, and encircling said conduit means and gas outlet member, whereby gas flowing from The outlet of said conduit means to the inlet of said gas outlet member must pass through said packing.
Claim 8
Dependent Claim
21 words
The gas treating apparatus of claim 5 wherein said cooling means in said low pressure chamber is located above said packing.
Claim 9
Dependent Claim
15 words
The gas treating apparatus of claim 6 wherein said cooling means includes water spray means.
Claim 10
Dependent Claim
35 words
The gas treating apparatus of claim 7 and also including means in fluid communication with said second reservoir and with said scrubbing means for recycling water collected in said second reservoir to said scrubbing means.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-05 | 1978-11-04 | 1979-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-05 | 1982-11-04 | 1983-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-05 | 1986-11-04 | 1987-05-06 | $7700.00 | Window Closed / Lapsed |