Patent US3864439A successfully refreshed from Google Patents.
US3864439A
Expired / Lapsed
US
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Gas-liquid contacting apparatus
Assignee: Mitsui Engineering and Shipbuilding Co Ltd
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Filing: 1972-12-12
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Granted: 1975-02-04
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Expires: 1992-12-12
Abstract
Abstract A gas-liquid contacting apparatus provided with vertically spaced trays having gas flow apertures therein and gas-liquid contacting devices provided on the trays. Each contacting device has a cover for preventing gas and liquid from ascending, a vertical wall having a plurality of gas-liquid apertures, and a plate for downwardly and tangentially deflecting the gas and liquid flow out of the gas-liquid apertures.
Inventors
- 👤 Shogo Tanigawa
- 👤 Takesi Yokoyama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:57
CPC Classifications
B; B01; B01D; B01D3/00; B01D3/14; B01D3/16; B01D3/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
Gas-liquid contacting apparatus comprising a column having trays provided at spaced intervals, each tray being provided with a weir means for maintaining a depth of liquid thereon, a downcomer communicating with the weir means, openings communicating with the space below the tray, gas-liquid contacting devices surrounding said openings each having a cover to prevent gas and liquid from ascending and a wall having a plurality of rectangularly-shaped inclined gas-liquid apertures, and a deflecting plate located adjacent each aperture at the outside of the wall to deflect downwardly and tangentially a gasliquid mixture flowing outwardly through the apertures.
Claim 2
Dependent Claim
97 words
Gas-liquid contacting apparatus comprising a column having trays provided at spaced intervals, each tray being provided with a weir means for maintaining a depth of liquid thereon, a downcomer communicating with the weir means, openings communicating with the space below the tray, gas-liquid contacting devices surrounding said openings each having a cover to prevent gas and liquid from ascending and a wall having a plurality of rectangularly-shaped inclined gas-liquid apertures, and a deflecting plate located adjacent each aperture at the outside of the wall to deflect downwardly and tangentially a gasliquid mixture flowing outwardly through the apertures.
References Cited (Backward Citations)
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US2965548A
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US3125614A
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US3362696A
Cited
US3417975A
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US3779528A
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US3779527A
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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) | 1978-02-03 | 1978-08-05 | 1979-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-03 | 1982-08-05 | 1983-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-03 | 1986-08-05 | 1987-02-04 | $7700.00 | Window Closed / Lapsed |