US3581474A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas scrubber
Assignee: National Dust Collector Corp
•
Filing: 1969-04-14
•
Granted: 1971-06-01
•
Expires: 1989-04-14
Abstract
Abstract A gas scrubber comprising a housing having an inlet and an outlet for gas, and a grid structure dividing said housing between said inlet and outlet and having an inlet side and an outlet side. The grid structure includes a support frame and one or more grid assemblies removably mounted thereon, each grid assembly employing a plurality of parallel grid elements. Wetting means is provided for introducing a contaminant-collecting scrubbing liquid on the inlet side of the grid structure onto the grid elements for intimate mixing with the gas and flow therewith through the passages between the grid elements, and separator means is provided for removing contaminated scrubbing liquid from the gas after passage through the grid structure.
Inventors
- 👤 Roger F Kent
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:51
CPC Classifications
B; B01; B01D; B01D47/00; B01D47/06
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
21 words
The gas scrubber of claim 1 including liquid seal means between said inlet and outlet side of said support frame structure.
Claim 2
Dependent Claim
47 words
The gas scrubber of claim 2 wherein said support frame structure is upright and said liquid seal means includes an upper seal adjacent the upper edge of said structure and a lower seal comprising a sump formed in said housing adjacent the lower end of said structure.
Claim 3
Dependent Claim
31 words
The gas scrubber of claim 1 wherein said wetting means includes a liquid-collecting trough along the upper edge of said support frame structure for dispensing liquid onto said inlet side thereof.
Claim 4
Dependent Claim
25 words
The gas scrubber of claim 4 wherein said separator means includes a liquid collector in communication with said trough for supplying liquid to the same.
Claim 5
Dependent Claim
40 words
The gas scrubber of claim 1 including a plurality of said grid members removably mounted on said open spaces, and at least one blocking plate removably mounted on said frame structure to cover at least another of said open spaces.
Claim 6
Dependent Claim
28 words
The gas scrubber of claim 6 wherein said wetting means includes liquid spray means for dispensing finely divided liquid onto the inlet side of said support frame structure.
Claim 7
Dependent Claim
71 words
The gas scrubber of claim 1 wherein said separator means includes a centrifugal vane assembly for directing wetted gases radially outwardly of a vertical axis, a cylindrical outer housing wall in concentric relation with said axis for collecting liquid droplets impinging thereon, annular trough means adjacent a lower end of said outer wall, and a perforated cylindrical wall, spaced inwardly of said outer wall and in concentric relation with said axis.
Claim 8
Dependent Claim
62 words
The gas scrubber of claim 8 wherein said vane assembly includes a plurality of spaced-apart, generally radially extending vanes in annular array between inner and outer concentric support rings, said vanes sloped in relation to the horizontal and angularly adjustable in relation thereto, said annular trough means being formed between said outer wall and said outer support ring of said vane assembly.
Claim 9
Dependent Claim
24 words
The gas scrubber of claim 9 wherein said perforated wall is spaced between said outer wall and said inner ring of said vane assembly.
Claim 10
Dependent Claim
36 words
The gas scrubber of claim 8 wherein said trough means includes an inner wall comprising a cylindrical ring supporting the outer ends of a plurality of sloped, radially outwardly extending spaced-apart vanes of said vane assembly.
Claim 11
Dependent Claim
62 words
The gas scrubber of claim 11 wherein said vane assembly includes an inner cylindrical ring for supporting the inner ends of said vanes, and wall means across said inner ring for dividing said housing section above and below said vane assembly, and valve means in said wall means opening intermittently for discharging collected liquid into said housing section below said wall means.
Claim 12
Dependent Claim
37 words
The gas scrubber of claim 11 wherein said perforated inner wall is spaced outwardly of said cylindrical ring and the lower end is spaced above said trough means for dispensing liquid collected thereon into said trough means.
Claim 13
Dependent Claim
35 words
The gas scrubber of claim 8 wherein said perforated cylindrical wall is formed of a plurality of removable segments, each being supported along opposite vertical edges in spaced inward relation to said cylindrical housing section.
Claim 14
Dependent Claim
55 words
The gas scrubber of claim 8 including a horizontally extending housing portion below and in communication with the lower end of said cylindriCal housing section; said support frame structure extended vertically transversely in said horizontal housing portion dividing the same into an inlet chamber and an outlet chamber in communication with said cylindrical housing section.
Claim 15
Dependent Claim
22 words
The gas scrubber of claim 15 including liquid seal means between said annular collecting trough and said inlet chamber of said housing.
Claim 16
Dependent Claim
32 words
The gas scrubber of claim 16 including sump means in said horizontal housing portion on opposite sides of said support frame structure forming liquid seal means between said inlet and outlet chambers.
Claim 17
Dependent Claim
45 words
The gas scrubber of claim 16 wherein said liquid seal means includes an elongated liquid-collecting trough along the upper edge of said support frame, said trough including overflow means for dispensing collected liquid to flow downwardly onto said support frame structure in said inlet chamber.
Claim 18
Dependent Claim
28 words
The gas scrubber of claim 18 including liquid spray means in said inlet chamber for introducing liquid into said gas passing from said inlet to said outlet chamber.
References Cited (Backward Citations)
US885185A
Cited
US912686A
Cited
US963832A
Cited
US1139053A
Cited
DE442410C
Cited
US1784627A
Cited
US1674764A
Cited
US1899017A
Cited
US1751999A
Cited
US2045519A
Cited
US2199632A
Cited
US3251176A
Cited
US3488039A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-31 | 1974-11-30 | 1975-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-31 | 1978-11-30 | 1979-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-31 | 1982-11-30 | 1983-06-01 | $7700.00 | Window Closed / Lapsed |