Patent US3779525A successfully refreshed from Google Patents.
US3779525A
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 gas flow aperture. The contacting structure has a cover for preventing gas and liquid to ascending and a perforated plate for breaking gas and liquid mixing flow therein.
Inventors
- 👤 S Tanigawa
- 👤 T Yokoyama
- 👤 K Karakawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:57
CPC Classifications
B; B01; B01D; B01D3/00; B01D3/14; B01D3/26
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
172 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 wall projecting upwardly from said tray and having apertures at a lower position below said predetermined depth of liquid to permit discharge of the liquid from the tray therethrough, a perforated plate disposed horizontally above the predetermined depth of liquid on said tray and overlying said gas-flow opening in said tray to permit gas flow therethrough, said structure being designed so that the liquid from said tray discharged through said apertures is blown up by the gas ascending through the gasflow opening of the tray, the desired gas-liquid contact being effected below said perforated plate above said gas-flow opening, and a cover above said perforated plate to prevent gas and liquid passing through said plate from ascending.
Claim 2
Dependent Claim
172 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 wall projecting upwardly from said tray and having apertures at a lower position below said predetermined depth of liquid to permit discharge of the liquid from the tray therethrough, a perforated plate disposed horizontally above the predetermined depth of liquid on said tray and overlying said gas-flow opening in said tray to permit gas flow therethrough, said structure being designed so that the liquid from said tray discharged through said apertures is blown up by the gas ascending through the gasflow opening of the tray, the desired gas-liquid contact being effected below said perforated plate above said gas-flow opening, and a cover above said perforated plate to prevent gas and liquid passing through said plate from ascending.
Claim 3
Dependent Claim
24 words
A gas-liquid contacting apparatus according to claim 1 including a vertical partition disposed over said gas-flow opening between said perforated plate and said cover.
Claim 4
Dependent Claim
117 words
A gas-liquid contacting apparatus according to claim 2 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, said vertical partition being disposed transversely to said flow.
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 |