Patent US3648440A successfully refreshed from Google Patents.
US3648440A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wet scrubber system
Assignee: Unifrax I LLC
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Filing: 1969-09-02
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Granted: 1972-03-14
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Expires: 1989-09-02
Abstract
Abstract A wet scrubber system includes a receptacle having a gas inlet at its top and a liquid sump at its bottom. The gas is intimately mixed with a scrubbing liquid in a contact section which has a frustoconical scrubbing section therebelow. A vertically movable target plate is in the scrubbing section for vertical adjustment in accordance with the pressure of the system.
Inventors
- 👤 Richard T Egan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:10
CPC Classifications
B; B01; B01D; B01D47/00; B01D47/06; Y; Y10; Y10S; Y10S261/00; Y10S261/54
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
103 words
A wet scrubber system comprising a receptacle, a gas inlet at the top of said receptacle, a liquid sump in the bottom of said receptacle, a contact section in said receptacle below said inlet, means for feeding a scrubbing liquid into said contact section for intimately mixing the incoming gas with the scrubbing liquid, a frusto-conical scrubbing section below said contact section, a vertically movable target plate in said scrubbing section, an outlet in said receptacle for scrubbed gas, means floating on said liquid sump for selectively moving said target plate upwardly and downwardly in accordance with the liquid level in said sump.
Claim 2
Dependent Claim
103 words
A wet scrubber system comprising a receptacle, a gas inlet at the top of said receptacle, a liquid sump in the bottom of said receptacle, a contact section in said receptacle below said inlet, means for feeding a scrubbing liquid into said contact section for intimately mixing the incoming gas with the scrubbing liquid, a frusto-conical scrubbing section below said contact section, a vertically movable target plate in said scrubbing section, an outlet in said receptacle for scrubbed gas, means floating on said liquid sump for selectively moving said target plate upwardly and downwardly in accordance with the liquid level in said sump.
Claim 3
Dependent Claim
31 words
A wet scrubber system as set forth in claim 1, including means for changing the level of liquid in said sump in accordance with changes in the pressure in said system.
Claim 4
Dependent Claim
64 words
A wet scrubber system as set forth in claim 2 wherein said means for changing the level of liquid includes a liquid make-up chamber adapted for liquid communication with said sump, and drainage means in said sump with pressure sensing means connected to said gas inlet and said gas outlet and to said make-up chamber for controlling the level of liquid in said sump.
Claim 5
Dependent Claim
66 words
A wet scrubber system as set forth in claim 2 wherein said floating means includes a vertical centering shaft extending into said sump and mounted at one end to said target plate, and a float connected to the other end of said shaft and floating on said sump to selectively move said shaft vertically upward and downward in accordance with the liquid level of said sump.
Claim 6
Dependent Claim
52 words
A wet scrubber system as set forth in claim 4 including a guidance conduit disposed around said centering shaft in communication with and of the same cross section as the bottom of said scrubbing section, and a deflector cone being disposed adjacent the bottom end of said guidance conduit above said float.
Claim 7
Dependent Claim
28 words
A wet scrubber system as set forth in claim 5 including primary mist eliminator means and secondary mist eliminator means between said deflector cone and said gas outlet.
Claim 8
Dependent Claim
54 words
A wet scrubber system as set forth in claim 6 wherein said primary mist eliminator means includes a first annular baffle secured to the wall of said receptacle and having drain tubes connected thereto, and a second annular baffle secured to said guidance conduit to form a tortuous path for the gas flowing therebetween.
Claim 9
Dependent Claim
28 words
A wet scrubber system as set forth in claim 7 wherein said secondary mist eliminator means include baffle plates in said gas outlet with drain tubes provided thereto.
Claim 10
Dependent Claim
31 words
A wet scrubber system as set forth in claim 8 including recirculating means between said gas inlet and said sump drainage means, and slurry discharge means connected to said recirculating means.
Claim 11
Dependent Claim
45 words
A wet scrubber system as set forth in claim 9 wherein said pressure sensing means includes a differential pressure transmitter and proportional controller connected by static lines to said gas inlet and said gas outlet and to a modulating valve connected to said make-up chamber.
Claim 12
Dependent Claim
28 words
A wet scrubber system as set forth in claim 10 including a dampening device disposed in said sump and connected to the lower end of said centering shaft.
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) | 1975-03-14 | 1975-09-13 | 1976-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-14 | 1979-09-13 | 1980-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-14 | 1983-09-13 | 1984-03-14 | $7700.00 | Window Closed / Lapsed |