US3633882A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vapor-liquid contacting apparatus
Assignee: Mitsui Engineering and Shipbuilding Co Ltd
•
Filing: 1969-07-23
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Granted: 1972-01-11
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Expires: 1989-07-23
Abstract
Abstract A gas-liquid contacting apparatus provided with vertically spaced trays having gas-flow openings therein and a contacting structure provided on the trays, the contacting structure comprising cylindrical walls surrounding said openings and secured to the trays and having apertures at a lower portion thereof. A perforated cylinder is provided atop of the cylindrical wall, and a cover. Liquid is maintained on the tray by a weir means and is discharged through the apertures of said cylindrical wall into the gas-flow opening and is blown up by gas ascending from the openings of the tray to form gas-liquid mixing flow. Suitable flow control means are disclosed for the gas and the liquid respectively.
Inventors
- 👤 Kouichi Karakawa
- 👤 Shogo Tanigawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:24
CPC Classifications
B; B01; B01D; B01D5/00; B01D5/0003; B01D53/00; B01D53/14; B01D53/18
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
153 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 apertures at a lower position 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 perforations above said predetermined depth to permit gas flow therethrough, and a cover on said perforated cylinder, said structure being designed so that the liquid from said tray discharged through said apertures is blown up by the gas ascending through the gas-flow opening of the tray, the desired gas-liquid contact being effected within said perforated cylinder above said apertures.
Claim 2
Dependent Claim
153 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 apertures at a lower position 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 perforations above said predetermined depth to permit gas flow therethrough, and a cover on said perforated cylinder, said structure being designed so that the liquid from said tray discharged through said apertures is blown up by the gas ascending through the gas-flow opening of the tray, the desired gas-liquid contact being effected within said perforated cylinder above said apertures.
Claim 3
Dependent Claim
18 words
A gas-liquid contacting apparatus according to claim 1 wherein said Cylindrical wall projects upwardly above said predetermined depth.
Claim 4
Dependent Claim
25 words
A gas-liquid contacting apparatus according to claim 1 wherein said tray has a plurality of gas-flow openings therein and including contacting structure surrounding each opening.
Claim 5
Dependent Claim
30 words
A gas-liquid contacting apparatus according to claim 1 including a series of radial vanes associated with said opening to cause the ascending gas to whirl outwardly against the perforated cylinder.
Claim 6
Dependent Claim
30 words
A gas-liquid contacting apparatus according to claim 1 including wire netting spanning across said gas-flow opening to impede the downward migration or ''''weeping'''' of the liquid discharged through said apertures.
Claim 7
Dependent Claim
64 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.
Claim 8
Dependent Claim
65 words
A gas-liquid contacting apparatus according to claim 6 wherein the downcomer means for the next lower tray is positioned at the opposite side of the column from the downcomer means for the upper tray, and including guiding plates upstanding in said next lower tray to direct the liquid in a circuitous path across said tray from said upper downcomer means to said next downcomer means.
Claim 9
Dependent Claim
37 words
A gas-liquid contacting apparatus according to claim 7 wherein said next lower tray has a plurality of gas-flow apertures therein arranged in a series along said circuitous path, each said aperture having a contacting structure associated therewith.
Claim 10
Dependent Claim
47 words
A gas-liquid contacting apparatus according to claim 1 wherein said upstanding cylindrical wall surrounding said aperture is spaced outwardly from said apertures to provide an inwardly projecting edge, across which the liquid discharged through said apertures flows before it is blown up by said ascending gas flow.
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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) | 1975-01-10 | 1975-07-12 | 1976-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-10 | 1979-07-12 | 1980-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-10 | 1983-07-12 | 1984-01-11 | $7700.00 | Window Closed / Lapsed |