Patent US2479126A successfully refreshed from Google Patents.
Patent US5059219A successfully refreshed from Google Patents.
US5059219A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electroprecipitator with alternating charging and short collector sections
Assignee: United States, AS REPRESENTED BY US ENVIRONMENTAL PROTECTION AGENCY
•
Filing: 1990-09-26
•
Granted: 1991-10-22
•
Expires: 2010-09-26
Abstract
Abstract The novel ESP has a plurality of collector sections alternating in series with a plurality of prechargers (charging sections) with each collector section being preceded by a charging section. Each collector section contains a plurality of collection plates spaced by a distance d to define a plurality of gas flow lanes therebetween. Each gas flow lane contains 1-4 corona discharge wires aligned parallel to the gas flow. Each charging section contains a plurality of corona discharge electrodes alternating with anodes in an array transverse to the gas flow. Each collector section is much shorter than in the prior art, both in actual length and in relation to the length of the length of the charging section and the interplate spacing d.
Inventors
- 👤 Norman Plaks
- 👤 Leslie E. Sparks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:31
CPC Classifications
B; B03; B03C; B03C3/00; B03C3/02; B03C3/025; B03C3/04; B03C3/12; B03C3/34; B03C3/36
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
110 words
An electrostatic precipitate comprising, in series: a plurality of collector sections comprising: a plurality of parallel collection plates, said collection plates being evenly spaced by a distance d to define the plurality of gas flow lanes therebetween, said collection plates defining the length of said collector section as 1-4d; and a least one first corona discharge electrode within each of said gas flow lanes; and a plurality of charging sections alternating in series with said collector sections, each collector section being immediately preceded by a charging section, each of said charging sections comprising a plurality of second corona discharge electrodes arranged in an array transverse to said gas flow lanes.
Claim 2
Dependent Claim
110 words
An electrostatic precipitate comprising, in series: a plurality of collector sections comprising: a plurality of parallel collection plates, said collection plates being evenly spaced by a distance d to define the plurality of gas flow lanes therebetween, said collection plates defining the length of said collector section as 1-4d; and a least one first corona discharge electrode within each of said gas flow lanes; and a plurality of charging sections alternating in series with said collector sections, each collector section being immediately preceded by a charging section, each of said charging sections comprising a plurality of second corona discharge electrodes arranged in an array transverse to said gas flow lanes.
Claim 3
Dependent Claim
27 words
An electrostatic precipitator in accordance with claim 1 wherein each of said second corona discharge electrodes is spaced 0.9-1.3d from the nearest adjacent first corona discharge electrode.
Claim 4
Dependent Claim
18 words
An electroprecipitator in accordance with claim 1 wherein each collector section is 0.4 to 1.0 meter in length.
Claim 5
Dependent Claim
13 words
An electroprecipitator in accordance with claim 1 containing at least five collector sections.
Claim 6
Dependent Claim
35 words
An electroprecipitator in accordance with claim 1 wherein the diameter of each of said second corona discharge electrodes is D and the diameter of each of said first corona discharge electrodes is at least 2D.
Claim 7
Dependent Claim
31 words
An electroprecipitator in accordance with claim 1 comprising a plurality of modules in series, each of said modules consisting of one of said collector sections and one of said charging sections.
Claim 8
Dependent Claim
58 words
An electrostatic precipitator in accordance with claim 1 wherein each of said first and second corona discharge electrodes is centered with respect to one of said gas flow lanes, whereby each of said second corona discharge electrodes is aligned with the one or more first corona discharge electrodes within the gas flow lane upon which it is centered.
Claim 9
Dependent Claim
39 words
An electrostatic precipitator in accordance with claim 7 wherein each linear array further includes a plurality of anode pipes alternating with said second corona discharge electrodes, each of said grounded pipes being aligned with one of said collection plates.
Claim 10
Dependent Claim
37 words
An electrostatic precipitator in accordance with claim 8 wherein the length of each of said charging sections is 0.8-1.6d with said anodes being spaced 0.4-0.8d from the edges of the collection plates of an adjacent collector section.
Claim 11
Dependent Claim
49 words
An electroprecipitator in accordance with claim 8 wherein the diameter of each of said second corona discharge electrodes has a diameter D, the diameter of each of said first corona discharge electrodes is at least 2D and the diameter of each of said grounded pipes is at least 15D.
Claim 12
Dependent Claim
57 words
An electrostatic precipitator in accordance with claim 1 wherein each of said gas flow lanes has two or three first corona discharge electrodes contained therein and spaced apart by a distance of approximately d, the length of each collector section being about 2d for two first corona discharge electrodes and 3d for three first corona discharge electrodes.
Claim 13
Dependent Claim
27 words
An electrostatic precipitator in accordance with claim 11 wherein each of said second corona discharge electrodes is spaced 0.9-1.3d from the nearest adjacent first corona discharge electrode.
References Cited (Backward Citations)
US1357466A
Cited
US3026964A
Cited
US3668836A
Cited
US3907520A
Cited
US3994704A
Cited
US3951624A
Cited
US4126434A
Cited
US4259707A
Cited
US4264343A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-10-21 | 1995-04-22 | 1995-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-10-21 | 1999-04-22 | 1999-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-10-21 | 2003-04-22 | 2003-10-22 | $7700.00 | Window Closed / Lapsed |