US3721068A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas stream scrubber
Assignee: Individual
•
Filing: 1972-02-01
•
Granted: 1973-03-20
•
Expires: 1992-02-01
Abstract
Abstract There is disclosed a countercurrent system, for instance for removing particles, such as fish solids, citrus pulp and other dust particles or syrupy droplets, from the exhaust gases from a dryer or the like. The system includes a vessel provided with coaxially interdigitated upper and lower baffles which control a countercurrent flow of the washing liquid and gas stream. The baffles are of graduating heights and the upper set ''''floats'''' at a level determined by the pressure within the vessel. The washing liquid with entrained gas assists in cleansing the baffles. Cleaning ports may also be provided.
Inventors
- 👤 D Vincent
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:07
CPC Classifications
B; B01; B01D; B01D47/00; B01D47/02; B01D47/021; B01D47/022
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
363 words
A wet countercurrent gas stream scrubber comprising: a closed vessel having a generally tubular cylindrical sidewall; said vessel having a bottom wall; said vessel having an upper end wall having conduit means defining an exhaust stack extending axially, centrally, upwardly therefrom; means defining a gas stream inlet conduit entering said vessel axially, centrally, upwardly through the bottom wall and having an open upper end within said vessel; at least one inlet pipe merging with said gas stream inlet conduit below where said gas stream inlet conduit enters said Vessel; a plurality of generally tubular, upstanding cylindrical members mounted on said bottom wall coaxially surrounding said gas stream inlet conduit at differing radial distances therefrom; said members, together with said gas stream inlet conduit adjacent and leading to the open upper end thereof constituting a lower set of baffles; a generally horizontal disk within said vessel above said lower set of baffles; means mounting said disk within said vessel generally coaxially therewith, the radially outer extent of said disk being less than the inner diameter of said generally tubular cylindrical sidewall to define an annular passage around the disk from thereunder to thereover; and means defining a plurality of generally tubular, depending cylindrical members having upper ends mounted on said disk, coaxially therewith at differing radial distances from the longitudinal axis of the vessel, said depending members constituting an upper set of baffles; means defining at least one washing liquid inlet to said vessel between said side wall and the radially outermost baffles of said lower set of baffles; and means defining at least one drain from said vessel between the said bottom wall and said gas stream inlet conduit radially adjacent the latter; the upper extents of the baffles of the lower set of baffles declining from baffle-to-baffle radially inwardly whereby circulating liquid may cascade radially inwardly from the inlet thereof to the outlet thereof over the baffles of the lower set of baffles; the lower extents of the baffles of the upper set of baffles axially interpenetrating radially between radially adjacent ones of said lower set of baffles in order to deflect the gas stream being cleaned repeatedly into the cascading liquid.
Claim 2
Dependent Claim
363 words
A wet countercurrent gas stream scrubber comprising: a closed vessel having a generally tubular cylindrical sidewall; said vessel having a bottom wall; said vessel having an upper end wall having conduit means defining an exhaust stack extending axially, centrally, upwardly therefrom; means defining a gas stream inlet conduit entering said vessel axially, centrally, upwardly through the bottom wall and having an open upper end within said vessel; at least one inlet pipe merging with said gas stream inlet conduit below where said gas stream inlet conduit enters said Vessel; a plurality of generally tubular, upstanding cylindrical members mounted on said bottom wall coaxially surrounding said gas stream inlet conduit at differing radial distances therefrom; said members, together with said gas stream inlet conduit adjacent and leading to the open upper end thereof constituting a lower set of baffles; a generally horizontal disk within said vessel above said lower set of baffles; means mounting said disk within said vessel generally coaxially therewith, the radially outer extent of said disk being less than the inner diameter of said generally tubular cylindrical sidewall to define an annular passage around the disk from thereunder to thereover; and means defining a plurality of generally tubular, depending cylindrical members having upper ends mounted on said disk, coaxially therewith at differing radial distances from the longitudinal axis of the vessel, said depending members constituting an upper set of baffles; means defining at least one washing liquid inlet to said vessel between said side wall and the radially outermost baffles of said lower set of baffles; and means defining at least one drain from said vessel between the said bottom wall and said gas stream inlet conduit radially adjacent the latter; the upper extents of the baffles of the lower set of baffles declining from baffle-to-baffle radially inwardly whereby circulating liquid may cascade radially inwardly from the inlet thereof to the outlet thereof over the baffles of the lower set of baffles; the lower extents of the baffles of the upper set of baffles axially interpenetrating radially between radially adjacent ones of said lower set of baffles in order to deflect the gas stream being cleaned repeatedly into the cascading liquid.
Claim 3
Dependent Claim
108 words
The scrubber of claim 1 wherein the means mounting said disk comprise rod means extending upwardly from securements to said disk through means defining openings in the upper end wall of the vessel; securements mounted on said rods exteriorly of the upper end wall; and coil springs coaxially respectively mounted on the rods and having purchase against the upper end wall and the rods in a sense to resiliently urge the disk downwardly, whereby said disk may float upwardly against the urging of said springs, upon being buoyed from below by the gas stream entering the vessel through the open upper end of the gas stream inlet conduit.
Claim 4
Dependent Claim
80 words
The scrubber of claim 1 further including clean liquid spray means within said vessel at the base of said exhaust stack for contacting the gas stream with clean liquid as the gas stream is exiting from the vessel, the spray means, disk and stack being so arranged with respect to one another that the liquid issuing from the spray means, after contacting the exiting gas stream, drips to the disk, runs thereover and drips off the radially outer edge thereof.
Claim 5
Dependent Claim
66 words
The scrubber of claim 3 wherein said drain means is connected to a conduit having means defining a stream splitter; a first and a second conduit connected to said stream splitter for receiving a first stream and a second stream split from the first-mentioned conduit thereby; the first conduit forwarding said first stream to said washing liquid inlet and the second conduit withdrawing said second stream.
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) | 1976-03-19 | 1976-09-18 | 1977-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-19 | 1980-09-18 | 1981-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-19 | 1984-09-18 | 1985-03-20 | $7700.00 | Window Closed / Lapsed |