GB643363A - Improvements in or relating to electrostatic dust precipitation - Google Patents
Improvements in or relating to electrostatic dust precipitationInfo
- Publication number
- GB643363A GB643363A GB27520/47A GB2752047A GB643363A GB 643363 A GB643363 A GB 643363A GB 27520/47 A GB27520/47 A GB 27520/47A GB 2752047 A GB2752047 A GB 2752047A GB 643363 A GB643363 A GB 643363A
- Authority
- GB
- United Kingdom
- Prior art keywords
- electrodes
- discharging
- precipitation
- stage
- cooling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/34—Constructional details or accessories or operation thereof
- B03C3/40—Electrode constructions
- B03C3/45—Collecting-electrodes
- B03C3/455—Collecting-electrodes specially adapted for heat exchange with the gas stream
Landscapes
- Electrostatic Separation (AREA)
Abstract
643,363. Electrostatic precipitation. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. Oct. 14, 1947, No. 27520. Convention date, Oct. 30, 1946. [Class 39 (i)] Back ionization in the ionizing zone of a twostage precipitation is reduced by cooling one or more of the non-discharging electrodes to a temperature below that of the gas under treatment by the passage of cooling fluid therethrough out of contact with the gas. A two-stage precipitator of the kind described in Specification 475,443 comprises an ionizing stage A, Fig. 1 and a precipitation stage B, both mounted in a duct C. Cooling fluid from a pump 32 and heat exchanger or cooler 34 is supplied through tubular non-discharging electrodes 22, which extend between headers formed on opposite sides by the supporting rectangular frame 4, mounted in the casing C. The outer tubular electrodes 20 are sealed to the frame 4 throughout their length so that they have a semicircular cross-section. The wire discharging positive electrodes extend between arms 44 supported by insulators 40 carried by a bar 38. Electrode dimensions and potentials are specified; the electrodes 20, 22 may consist of aluminium, coated iron or of stainless steel. The precipitation stage B comprises discharging and non-discharging plate electrodes 46, 48 arranged alternately. In a modification, the supporting frame 4, Fig. 5, has the waterheaders 50 subdivided by partitions 54, 56 so that the cooling liquid circulates through pairs of non-discharging electrodes 64, 68 in parallel. Dust-scraping rings 62, 66 are reciprocated through rods 70, which are shown displaced by 90 degrees from their operating position. Curves are included to show the maximum temperature of the non-discharging electrodes permissible for various electrode voltages without back-ionization in air treated for the removal of silica dust, and show also permissible temperature with varying dew points of the treated air. The cooled electrodes may be washed by the flow of condensate collected by troughs 82, Fig. 8, fixed on sloping sides 80 by the supporting frame. A pipe 84 may connect the water-cooling headers of adjacent units.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US643363XA | 1946-10-30 | 1946-10-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB643363A true GB643363A (en) | 1950-09-20 |
Family
ID=22055232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB27520/47A Expired GB643363A (en) | 1946-10-30 | 1947-10-14 | Improvements in or relating to electrostatic dust precipitation |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB643363A (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3026964A (en) * | 1959-05-06 | 1962-03-27 | Gaylord W Penney | Industrial precipitator with temperature-controlled electrodes |
| US3735560A (en) * | 1968-08-05 | 1973-05-29 | Carrier Corp | Electrostatic air cleaning apparatus |
| US4092134A (en) * | 1976-06-03 | 1978-05-30 | Nipponkai Heavy Industries Co., Ltd. | Electric dust precipitator and scraper |
| US4822381A (en) * | 1988-05-09 | 1989-04-18 | Government Of The United States As Represented By Administrator Environmental Protection Agency | Electroprecipitator with suppression of rapping reentrainment |
| US7662348B2 (en) | 1998-11-05 | 2010-02-16 | Sharper Image Acquistion LLC | Air conditioner devices |
| US7695690B2 (en) | 1998-11-05 | 2010-04-13 | Tessera, Inc. | Air treatment apparatus having multiple downstream electrodes |
| US7724492B2 (en) | 2003-09-05 | 2010-05-25 | Tessera, Inc. | Emitter electrode having a strip shape |
| US7767169B2 (en) | 2003-12-11 | 2010-08-03 | Sharper Image Acquisition Llc | Electro-kinetic air transporter-conditioner system and method to oxidize volatile organic compounds |
| US7767165B2 (en) | 1998-11-05 | 2010-08-03 | Sharper Image Acquisition Llc | Personal electro-kinetic air transporter-conditioner |
| US7833322B2 (en) | 2006-02-28 | 2010-11-16 | Sharper Image Acquisition Llc | Air treatment apparatus having a voltage control device responsive to current sensing |
| US7897118B2 (en) | 2004-07-23 | 2011-03-01 | Sharper Image Acquisition Llc | Air conditioner device with removable driver electrodes |
| US7906080B1 (en) | 2003-09-05 | 2011-03-15 | Sharper Image Acquisition Llc | Air treatment apparatus having a liquid holder and a bipolar ionization device |
| US7959869B2 (en) | 1998-11-05 | 2011-06-14 | Sharper Image Acquisition Llc | Air treatment apparatus with a circuit operable to sense arcing |
| US8043573B2 (en) | 2004-02-18 | 2011-10-25 | Tessera, Inc. | Electro-kinetic air transporter with mechanism for emitter electrode travel past cleaning member |
-
1947
- 1947-10-14 GB GB27520/47A patent/GB643363A/en not_active Expired
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3026964A (en) * | 1959-05-06 | 1962-03-27 | Gaylord W Penney | Industrial precipitator with temperature-controlled electrodes |
| US3735560A (en) * | 1968-08-05 | 1973-05-29 | Carrier Corp | Electrostatic air cleaning apparatus |
| US4092134A (en) * | 1976-06-03 | 1978-05-30 | Nipponkai Heavy Industries Co., Ltd. | Electric dust precipitator and scraper |
| US4822381A (en) * | 1988-05-09 | 1989-04-18 | Government Of The United States As Represented By Administrator Environmental Protection Agency | Electroprecipitator with suppression of rapping reentrainment |
| US7767165B2 (en) | 1998-11-05 | 2010-08-03 | Sharper Image Acquisition Llc | Personal electro-kinetic air transporter-conditioner |
| US7695690B2 (en) | 1998-11-05 | 2010-04-13 | Tessera, Inc. | Air treatment apparatus having multiple downstream electrodes |
| US7662348B2 (en) | 1998-11-05 | 2010-02-16 | Sharper Image Acquistion LLC | Air conditioner devices |
| USRE41812E1 (en) | 1998-11-05 | 2010-10-12 | Sharper Image Acquisition Llc | Electro-kinetic air transporter-conditioner |
| US7959869B2 (en) | 1998-11-05 | 2011-06-14 | Sharper Image Acquisition Llc | Air treatment apparatus with a circuit operable to sense arcing |
| US7976615B2 (en) | 1998-11-05 | 2011-07-12 | Tessera, Inc. | Electro-kinetic air mover with upstream focus electrode surfaces |
| US8425658B2 (en) | 1998-11-05 | 2013-04-23 | Tessera, Inc. | Electrode cleaning in an electro-kinetic air mover |
| US7724492B2 (en) | 2003-09-05 | 2010-05-25 | Tessera, Inc. | Emitter electrode having a strip shape |
| US7906080B1 (en) | 2003-09-05 | 2011-03-15 | Sharper Image Acquisition Llc | Air treatment apparatus having a liquid holder and a bipolar ionization device |
| US7767169B2 (en) | 2003-12-11 | 2010-08-03 | Sharper Image Acquisition Llc | Electro-kinetic air transporter-conditioner system and method to oxidize volatile organic compounds |
| US8043573B2 (en) | 2004-02-18 | 2011-10-25 | Tessera, Inc. | Electro-kinetic air transporter with mechanism for emitter electrode travel past cleaning member |
| US7897118B2 (en) | 2004-07-23 | 2011-03-01 | Sharper Image Acquisition Llc | Air conditioner device with removable driver electrodes |
| US7833322B2 (en) | 2006-02-28 | 2010-11-16 | Sharper Image Acquisition Llc | Air treatment apparatus having a voltage control device responsive to current sensing |
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