Patent US3556490A successfully refreshed from Google Patents.
US3556490A
Expired / Lapsed
US
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Gas-liquid contact apparatus and method
Assignee: Svenska Flaktfabriken AB
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Filing: 1969-05-05
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Granted: 1971-01-19
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Expires: 1989-05-05
Abstract
Abstract A wet scrubber for effecting liquid-gas contact in which the gas is passed through a bed of suspended loose contact material which is wetted by a liquid. The wetting liquid is injected into the contact material in the form of a compact jet directed upwardly along the central axis of the scrubber so as to impart to the contact material a controlled circulatory motion in the contact zone.
Inventors
- 👤 Ole K Bockman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:05
CPC Classifications
B; B01; B01D; B01D47/00; B01D47/06
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
47 words
An apparatus according to claim 1, characterized in that an obstacle, preferably in the form of a substantially plane plate, is mounted above the contact zone, against which obstacle too strong a liquid jet, which possibly may be formed, is deflected backwards down into the contact zone.
Claim 2
Dependent Claim
43 words
An apparatus according to claim 1, characterized in that the contact bodies are formed as hollow, preferably spherical balls with a density being lower than that of the liquid, but exceeding that of the gas, said balls having diameters not exceeding 100 mm.
Claim 3
Dependent Claim
56 words
An apparatus according to claim 1, characterized in that the contact zone is divided into two or more partial zones located one above the other and separated by a partition wall, which is permeable to the gas and liquid, but unpermeable to the contact bodies, the number of contact bodies being distributed between the partial zones.
Claim 4
Dependent Claim
25 words
An apparatus according to claim 1, characterized in that the sidewalls of the contact zone are made convergent in the flow direction of the gas.
Claim 5
Dependent Claim
32 words
An apparatus according to claim 1, characterized in that below the contact zone is mounted a means for even distribution of the gas over the cross section area of the contact zone.
Claim 6
Dependent Claim
36 words
An apparatus according to claim 1, characterized in that a drop catching means is mounted above the contact zone and that above said drop catching means is mounted a means for flush-cleaning the drop catching means.
Claim 7
Dependent Claim
37 words
An apparatus for effecting an intimate contact between a gas and a liquid, characterized in that a plurality of units constructed according to claim 1 are placed to the side of one another for parallel gas flow.
Claim 8
Dependent Claim
169 words
Apparatus for scrubbing a gas with a liquid comprising a casing having a longitudinal axis disposed upright with means to introduce the gaseous medium into said casing adjacent its bottom and to withdraw gaseous medium from said casing adjacent its top whereby said gaseous medium is caused to flow longituDinally upward through said casing, grating means comprising longitudinally spaced-apart elements disposed transversely of said casing to define therebetween a contact zone within said casing, loose lightweight contact material interposed within said contact zone in surface-contact with the gaseous medium passing longitudinally through said casing, and liquid supply means below said contact zone having nozzle means directed upwardly along the central axis of said casing to project a compact jet of liquid upwardly within said casing through said contact zone along said longitudinal axis to thereby effect a controlled circulatory motion of said loose contact elements within said zone, said grating means confining said contact elements to within said contact zone without preventing the flow of gaseous medium upwardly therethrough.
Claim 9
Independent Claim
102 words
A method for effecting controlled circulatory motion of contact bodies within a scrubber having contact bodies confined in a contact zone between transverse grating elements spaced longitudinally within an upright longitudinal channel, comprising the steps of positioning a liquid supply means below said contact zone and controlling the flow of liquid through said supply means to provide a compact jet of liquid which is projected upwardly within said channel through said contact zone into contact with the contact elements therein to both wet the surfaces of said elements and to effect a controlled circulatory motion of said elements within said contact zone.
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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) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |