US3779527A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas-liquid contacting apparatus
Assignee: Mitsui Engineering and Shipbuilding Co Ltd
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Filing: 1971-08-24
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Granted: 1973-12-18
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Expires: 1991-08-24
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 gas flow aperture. The contacting structure has a cover for preventing gas and liquid from ascending and a perforated cylinder whose perforations are outwardly and downwardly directed.
Inventors
- 👤 K Karakawa
- 👤 S Tanigawa
- 👤 T Yokoyama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:55
CPC Classifications
B; B01; B01D; B01D3/00; B01D3/14; B01D3/26; B01D3/16; B01D3/18
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
176 words
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-flow opening therein, upwardly through which the gas is adapted to flow, contacting structure surrounding said opening comprising a cylindrical wall projecting upwardly from said tray and having passages below said predetermined depth of liquid to permit discharge of the liquid from the tray therethrough, a cylinder mounted coaxially on said cylindrical wall having outwardly and downwardly directed perforations above said predetermined depth to permit gas to flow outwardly and downwardly therethrough, and a cover on said perforated cylinder, said structure being designed so that the liquid from said tray discharged through said passages is blown up by the gas ascending through the gasflow opening of the tray, the desired gas-liquid contact being effected within said perforated cylinder above said wall, and separation of the liquid from the gas being effected by the downward and outward flow through said perforations.
Claim 2
Dependent Claim
176 words
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-flow opening therein, upwardly through which the gas is adapted to flow, contacting structure surrounding said opening comprising a cylindrical wall projecting upwardly from said tray and having passages below said predetermined depth of liquid to permit discharge of the liquid from the tray therethrough, a cylinder mounted coaxially on said cylindrical wall having outwardly and downwardly directed perforations above said predetermined depth to permit gas to flow outwardly and downwardly therethrough, and a cover on said perforated cylinder, said structure being designed so that the liquid from said tray discharged through said passages is blown up by the gas ascending through the gasflow opening of the tray, the desired gas-liquid contact being effected within said perforated cylinder above said wall, and separation of the liquid from the gas being effected by the downward and outward flow through said perforations.
Claim 3
Dependent Claim
16 words
A gas-liquid contacting apparatus according to claim 1 wherein said cylinder is perforated throughout its height.
Claim 4
Dependent Claim
128 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 weir plate disposed transversely to said flow intermediate said cylinder wall and the side of said column.
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) | 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 |