US3742681A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid distributors for wet electrostatic precipitators
Assignee: Dresser Industries Inc
•
Filing: 1972-07-25
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Granted: 1973-07-03
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Expires: 1992-07-25
Abstract
Abstract A wet electrostatic precipitator including at least one annular gas passage defined by concentrically-arranged collector tubes having liquid distributors mounted thereabove to produce downwardly-flowing liquid films on the walls of the passage. A discharge electrode structure is disposed in the annular passage, a high voltage being applied between the electrode structure and the liquid films on the collector walls to cause ionized particulates in a contaminated gaseous stream conveyed upwardly through the passage, to migrate toward the films to be carried downwardly thereby for disposal. The liquid distributors are adapted to produce downflowing uniform films of liquid on the surfaces of the collector tubes which line the passage, the films being free of dry spots or splashing.
Inventors
- 👤 Seversky A De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:57
CPC Classifications
B; B03; B03C; B03C3/00; B03C3/02; B03C3/16; Y; Y10; Y10S; Y10S55/00; Y10S55/38
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
129 words
A liquid distributor adapted to operate in conjunction with a wet electrostatic precipitator having concentrically-arranged collector tubes defining annular passages through which passes a contaminated gaseous stream, the distributor producing a downwardly-flowing liquid film on the inner and outer walls of the associated collector tube, said distributor comprising: an annular ring secured to the upper end of the associated collector tube, the interior of said ring being hollow to define a main tank for holding liquid fed thereto from a supply thereof, said ring having inclined openings therein to discharge liquid from said tank onto said inner and outer walls, and to impart a swirling motion thereto, and means effecting compensation for the centrifugal forces created by said swirling motion to prevent liquid from peeling off said outer wall.
Claim 2
Dependent Claim
129 words
A liquid distributor adapted to operate in conjunction with a wet electrostatic precipitator having concentrically-arranged collector tubes defining annular passages through which passes a contaminated gaseous stream, the distributor producing a downwardly-flowing liquid film on the inner and outer walls of the associated collector tube, said distributor comprising: an annular ring secured to the upper end of the associated collector tube, the interior of said ring being hollow to define a main tank for holding liquid fed thereto from a supply thereof, said ring having inclined openings therein to discharge liquid from said tank onto said inner and outer walls, and to impart a swirling motion thereto, and means effecting compensation for the centrifugal forces created by said swirling motion to prevent liquid from peeling off said outer wall.
Claim 3
Dependent Claim
63 words
A distributor as set forth in claim 1, wherein said ring has a semi-circular profile which merges with the inner and outer walls of said associated collector tube and is provided at its top with a divider collar which separates the liquid passing through said openings into two distinct streams, one passing over the inner wall and the other over the outer wall.
Claim 4
Dependent Claim
45 words
A distributor as set forth in claim 2, wherein said ring is provided with two partitions to define said main tank, and a sub-tank therebelow, said sub-tank being coupled to said main tank by inclined openings causing the liquid in the main tank to swirl.
Claim 5
Dependent Claim
27 words
A distributor as set forth in claim 2, wherein the lower end of said collar is chamfered to cause more liquid to flow to said inner wall.
Claim 6
Dependent Claim
29 words
A distributor as set forth in claim 1, wherein said collector tube is hollow, the liquid from said supply being fed through said hollow tube into said main tank.
Claim 7
Dependent Claim
31 words
A distributor as set forth in claim 1, wherein said collector tube is solid and the liquid from said supply is fed through the top of said ring into said tank.
Claim 8
Dependent Claim
68 words
A distributor as set forth in claim 6, wherein said ring is raised above said collector tube by a pedestal and is provided at its underside with a first series of openings on one side of said pedestal to discharge liquid to flow over the inner wall,and a second series of openings on the other side of said pedestal to discharge liquid to flow over the outer wall.
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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) | 1976-07-02 | 1977-01-01 | 1977-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-02 | 1981-01-01 | 1981-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-02 | 1985-01-01 | 1985-07-03 | $7700.00 | Window Closed / Lapsed |