Patent US4759884A successfully refreshed from Google Patents.
US4759884A
Expired / Lapsed
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Apparatus for gas wet treatment
Assignee: BROOK CLUB Inc A CORP OF
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Filing: 1987-01-20
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Granted: 1988-07-26
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Expires: 2007-01-20
Abstract
Abstract An apparatus for gas wet-treatment which includes at least one perforated plate having a unique arrangement of round holes. The holes are provided with a cross-sectional area larger than about 1 cm 2 and a length of between 2 and 10 cm. The central axes of least some of the round holes have portions which meet the perforated plate at an acute angle. Gas is directed upwardly through the plate, while liquid proceeds in a downward direction to provide countercurrent contacting of the gas and the liquid.
Inventors
- 👤 Kiyoharu Michimae
- 👤 Akira Amamiya
- 👤 Shozo Onogi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:18
CPC Classifications
B; B01; B01F; B01F23/00; B01F23/20; B01F23/21; B01F23/215; B01D; B01D3/00; B01D3/14; B01D3/16; B01D3/22
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
161 words
An apparatus for gas-wet treatment, the apparatus comprising at least one perforated plate for countercurrent contacting of vapor and liquid within the apparatus, and means defining a multiplicity of round holes in said plate for distribution of vapor through the liquid, each of said round holes having a cross-sectional area larger than about 1 cm 2 and a length of from about 2 cm to about 10 cm, the central axes of at least some of said round holes having portions which meet said perforated plate at an accute angle, said holes being dimensioned so that under normal flow conditions, said liquid flows through each of said holes in an annular pipe-shaped stream having a rippled inner surface to thereby form a vapor passage along the central portion of the stream and to promote mixing of the vapor and the liquid, the configuration of said holes minimizing clogging of the perforated plate and avoiding an excessive pressure differential across the plate.
Claim 2
Independent Claim
161 words
An apparatus for gas-wet treatment, the apparatus comprising at least one perforated plate for countercurrent contacting of vapor and liquid within the apparatus, and means defining a multiplicity of round holes in said plate for distribution of vapor through the liquid, each of said round holes having a cross-sectional area larger than about 1 cm 2 and a length of from about 2 cm to about 10 cm, the central axes of at least some of said round holes having portions which meet said perforated plate at an accute angle, said holes being dimensioned so that under normal flow conditions, said liquid flows through each of said holes in an annular pipe-shaped stream having a rippled inner surface to thereby form a vapor passage along the central portion of the stream and to promote mixing of the vapor and the liquid, the configuration of said holes minimizing clogging of the perforated plate and avoiding an excessive pressure differential across the plate.
Claim 3
Dependent Claim
41 words
The apparatus as set forth in claim 1 wherein said perforated plate has a number of round holes each of which has a cross sectional area larger than about 1.5 cm 2 and a length of 4 up to 7 cm.
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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) | 1991-07-26 | 1992-01-25 | 1992-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-07-26 | 1996-01-25 | 1996-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-07-26 | 2000-01-25 | 2000-07-26 | $7700.00 | Window Closed / Lapsed |