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US3779526A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas-liquid contacting apparatus
Assignee: Mitsui Engineering and Shipbuilding Co Ltd
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Filing: 1971-08-19
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Granted: 1973-12-18
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Expires: 1991-08-19
Abstract
Abstract A gas-liquid contacting apparatus provided with vertically spaced trays having gas flow aperture therein and a contacting structure provided on the trays surrounding the aperture. The contacting structure has a cover for preventing gas and liquid to ascending. The edge of said aperture is formed in a sawteeth shape.
Inventors
- 👤 K Karakawa
- 👤 S Tanigawa
- 👤 T Yokoyama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:04
CPC Classifications
B; B01; B01D; B01D3/00; B01D3/14; B01D3/26
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
161 words
In a gas-liquid contacting apparatus comprising an upright column in which the gas flows upwardly, at least one tray mounted transversely in said column and having means for maintaining liquid thereon at a predetermined depth and a gas-flowing opening therein, upwardly through which the gas is adapted to flow, contacting structure surrounding said opening comprising a wall projecting upwardly from said tray and having means below said predetermined depth of liquid to permit discharge of the liquid from the tray into said structure, a cylinder mounted on said wall having perforations above said predetermined depth to permit gas to flow outwardly therethrough, and a cover on said perforated cylinder, said structure being designed so that the liquid from said tray within said structure is blown up by the gas ascending through the gas-flow opening of the tray, the improvement wherein said gas-flow opening is serrated around its periphery to break up the liquid film on the tray within said contact structure.
Claim 2
Dependent Claim
161 words
In a gas-liquid contacting apparatus comprising an upright column in which the gas flows upwardly, at least one tray mounted transversely in said column and having means for maintaining liquid thereon at a predetermined depth and a gas-flowing opening therein, upwardly through which the gas is adapted to flow, contacting structure surrounding said opening comprising a wall projecting upwardly from said tray and having means below said predetermined depth of liquid to permit discharge of the liquid from the tray into said structure, a cylinder mounted on said wall having perforations above said predetermined depth to permit gas to flow outwardly therethrough, and a cover on said perforated cylinder, said structure being designed so that the liquid from said tray within said structure is blown up by the gas ascending through the gas-flow opening of the tray, the improvement wherein said gas-flow opening is serrated around its periphery to break up the liquid film on the tray within said contact structure.
Claim 3
Dependent Claim
22 words
A gas-liquid contacting apparatus according to claim 1 wherein the serration of the gas-flow opening is in the form of saw teeth.
Claim 4
Dependent Claim
123 words
A gas-liquid contacting apparatus according to claim 1 including a series of trays mounted transversely in said column in vertically-spaced relation, said means for maintaining the liquid at a predetermined level upon each tray including downcomer means to transfer liquid from an upper tray to the next lower tray and arranged so that the gas does not flow upwardly through said downcomer means, said downcomer means for the next lower tray being positioned at the opposite side of the column from the downcomer means for the upper tray, whereby the liquid is directed to flow across said tray from said upper downcomer means to said next downcomer means, and a vertical plate disposed transversely to said flow direction within said perforated cylinder wall.
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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) | 1976-12-17 | 1977-06-18 | 1977-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-17 | 1981-06-18 | 1981-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-17 | 1985-06-18 | 1985-12-18 | $7700.00 | Window Closed / Lapsed |