CN1745902A - Dipole corona electrostatic dust-proof device - Google Patents
Dipole corona electrostatic dust-proof device Download PDFInfo
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- CN1745902A CN1745902A CNA2005100196662A CN200510019666A CN1745902A CN 1745902 A CN1745902 A CN 1745902A CN A2005100196662 A CNA2005100196662 A CN A2005100196662A CN 200510019666 A CN200510019666 A CN 200510019666A CN 1745902 A CN1745902 A CN 1745902A
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- corona discharge
- discharge electrode
- dust
- dust collecting
- pole plate
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Abstract
An electrostatic duster by dipolar corona features that in its casing there are several electrode pairs composed of a corona electrode and its dust collecting plate connected with high DC voltage and a counter-corona electrode and its dust collecting plate connected with ground. Under the action of electric field force, the dust is captured by said dust collecting plates. Its advantages are high dusting efficiency and simple structure.
Description
One, technical field
The invention belongs to a kind of electrostatic precipitator, especially relate to a kind of dipole corona electrostatic dust-proof device.
Two, background technology
At present, separating from ash-laden gas and capturing dust mainly is to adopt various multi-form dust arresters, being most widely used of its center line one board-like electrostatic precipitator.Its basic principle is to utilize corona discharge electrode discharge, makes dust in flue gas charged, charged dust under the effect of electric field force to opposite polarity gather dust electrode movement and collect under, thereby reach the purpose that dust is separated from flue gas.Electrostatic precipitator is compared with the deduster of other type, have resistance little, the power consumption less, the collection efficiency advantages of higher.The part but it also comes with some shortcomings mainly is:
1, its accommodation to dust specific resistance is narrower, is generally 10
4Ω cm～10
11Ω cm, for than resistance greater than 10
11The high resistivity dust of Ω cm easily produces back corona phenomenon, and for than resistance less than 10
4The low resistivity dust of Ω cm easily produce reentrainment of dust (Zhang Dianyin, Wang Chun chief editor. the deduster handbook. Beijing: Chemical Industry Press, 2005);
2, for ultrafine dust, its collection efficiency not high (towards dawn east. electrocoagulation dedusting theory and application technical research. Northeastern University, 2003);
3, since its utmost point to join form be that line one is board-like, field strength distribution is inhomogeneous so gather dust, and average field-strength is lower, and this is not only bad for the migration velocity that improves dust, nor be beneficial to dust fully charged (towards dawn east. modern dedusting theory and technology. Beijing: metallurgical industry publishing house, 2002);
4, traditional electrostatic precipitator be difficult to reach increasingly stringent environmental protection standard (Zhao Yi etc. sack cleaner is in the application and the prospect of coal-burning power plant. North China Electric Power University's journal, 2003,30 (6): 90-93).
Three, summary of the invention
Task of the present invention provides a kind of collection efficiency height, dipole corona electrostatic dust-proof device simple in structure, reliable, big to dust specific resistance accommodation.
For realizing above-mentioned task, the technical solution adopted in the present invention is: be provided with some to electrode in the electrostatic precipitator housing, it is formed by corona discharge electrode, corona discharge electrode dust collecting pole plate, anti-corona discharge electrode and anti-corona discharge electrode dust collecting pole plate, corona discharge electrode and corona discharge electrode dust collecting pole plate all link anti-corona discharge electrode and the equal ground connection of anti-corona discharge electrode dust collecting pole plate with the high-pressure side of DC high-voltage power supply.
Described corona discharge electrode, anti-corona discharge electrode are separately fixed on corona discharge electrode dust collecting pole plate, the anti-corona discharge electrode dust collecting pole plate, and are one.The setting of corona discharge electrode and anti-corona discharge electrode or for over against arranging or for staggering mutually.
When corona discharge electrode applies negative high voltage, then form negative corona discharge, produce a large amount of anions, and the anti-corona discharge electrode of ground connection is at this moment the positive corona discharge to produce a large amount of cations.When the electric field of dust by forming by corona discharge electrode dust collecting pole plate and anti-corona discharge electrode dust collecting pole plate, bump with positive and negative ion a large amount of in the electric field, thereby a part of dust is become positively charged, and negative electricity on another part dust band.Under the effect of electric field force, electronegative dust moves to anti-corona discharge electrode dust collecting pole plate, and the dust of positively charged is to corona discharge electrode dust collecting pole plate motion, reach anti-corona discharge electrode dust collecting pole plate and corona discharge electrode dust collecting pole plate after, dust promptly is collected.Similarly,, then form the positive corona discharge, produce a large amount of cations, and the anti-corona discharge electrode of ground connection is negative corona discharge at this moment, produces a large amount of anions if corona discharge electrode applies positive high voltage.No matter corona discharge electrode connects positive high voltage still connects negative high voltage, can both make dust realize that in electric field dipole is charged, and respectively to opposite polarity pole plate motion, thereby be collected.
Owing to adopt technique scheme, the invention has the advantages that:
1, utilizes DC high-voltage power supply can produce positive corona and negative corona discharge simultaneously, thereby can make the dust in the electric field realize that dipole is charged;
2, because corona discharge electrode dust collecting pole plate and anti-corona discharge electrode dust collecting pole plate are tabular,, strengthened dust collection effect so can form uniform field intensity between them;
3, corona discharge electrode and anti-corona discharge electrode interlaced arrangement can make distribution of space charge more even, and it is fully charged to help dust;
4, since corona discharge and anti-electric-corona discharge all between corona discharge electrode and anti-corona discharge electrode, carry out.So most electric charges flow into corona discharge electrodes and anti-corona discharge electrode, and very little by being deposited on the dust collecting pole plate electric current of dust layer, thus can suppress the anti-corona of high resistivity dust effectively, thus the accommodation of electrostatic precipitator enlarged to dust specific resistance;
5, simple in structure, easy to maintenance, and easily on existing electrostatic precipitator, transform, industrialization is promoted and realized to the technology that helps.
Four, description of drawings
Fig. 1 is a kind of structural representation of the present invention;
Fig. 2 is corona discharge and the anti-electric-corona discharge schematic diagram of Fig. 1.
Five, the specific embodiment
The invention will be further described below in conjunction with drawings and Examples.
Fig. 1 is the structural representation that a kind of corona discharge electrode of the present invention [2], anti-corona discharge electrode [4] stagger mutually.In electrostatic precipitator housing [1], be provided with somely, form by corona discharge electrode [2], corona discharge electrode dust collecting pole plate [3], anti-corona discharge electrode [4] and anti-corona discharge electrode dust collecting pole plate [5] to electrode.Corona discharge electrode [2] and corona discharge electrode dust collecting pole plate [3] all link with the high-pressure side of unipolarity DC high-voltage power supply [6], and anti-corona discharge electrode [4] and anti-corona discharge electrode dust collecting pole plate [5] be ground connection all.Be fixed with corona discharge electrode [2], anti-corona discharge electrode [4] on corona discharge electrode dust collecting pole plate [3], the anti-corona discharge electrode dust collecting pole plate [5] respectively.Being set to of corona discharge electrode [2] and anti-corona discharge electrode [4] is staggeredly arranged.
The operation principle of this device as shown in Figure 2, when unipolarity DC high-voltage power supply [6] is connected, corona discharge electrode [2] produces corona discharge and anti-electric-corona discharge respectively with anti-corona discharge electrode [4], formed a large amount of positive and negative ion bumps with the dust that enters in the electric field, make dust charged, under the effect of electric field force, captured by corona discharge electrode dust collecting pole plate [3] and anti-corona discharge electrode dust collecting pole plate [5].Therefore, this device has following advantage:
1, utilizes the unipolarity DC high-voltage power supply can produce positive corona and negative corona discharge simultaneously, thereby can make the dust in the electric field realize that dipole is charged;
2, because corona discharge electrode dust collecting pole plate and anti-corona discharge electrode dust collecting pole plate are tabular,, strengthened dust collection effect so can form uniform field intensity between them;
3, corona discharge electrode and anti-corona discharge electrode interlaced arrangement can make distribution of space charge more even, and it is fully charged to help dust;
3, since corona discharge and anti-electric-corona discharge all between corona discharge electrode and anti-corona discharge electrode, carry out, therefore the electric current by dust layer on corona discharge electrode dust collecting pole plate and the anti-corona discharge electrode dust collecting pole plate is very low, so can suppress the anti-corona of high resistivity dust effectively, thereby enlarge the accommodation of electrostatic precipitator to dust specific resistance;
5, simple in structure, easy to maintenance, and easily on existing electrostatic precipitator, transform, industrialization is promoted and realized to the technology that helps.
Claims (3)
1, a kind of dipole corona electrostatic dust-proof device, it is characterized in that in electrostatic precipitator housing [1], being provided with some to electrode, it is formed by corona discharge electrode [2], corona discharge electrode dust collecting pole plate [3], anti-corona discharge electrode [4] and anti-corona discharge electrode dust collecting pole plate [5], corona discharge electrode [2] and corona discharge electrode dust collecting pole plate [3] all link with the high-pressure side of DC high-voltage power supply [6], and anti-corona discharge electrode [4] and anti-corona discharge electrode dust collecting pole plate [5] be ground connection all.
2, dipole corona electrostatic dust-proof device according to claim 1 is characterized in that described corona discharge electrode [2], anti-corona discharge electrode [4] are separately fixed on corona discharge electrode dust collecting pole plate [3], the anti-corona discharge electrode dust collecting pole plate [5], and is one.
3,, it is characterized in that the setting of described corona discharge electrode [2] and anti-corona discharge electrode [4] or for over against arranging or for being staggeredly arranged according to each described dipole corona electrostatic dust-proof device in the claim 1,2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2005100196662A CN1745902A (en) | 2005-10-26 | 2005-10-26 | Dipole corona electrostatic dust-proof device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2005100196662A CN1745902A (en) | 2005-10-26 | 2005-10-26 | Dipole corona electrostatic dust-proof device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1745902A true CN1745902A (en) | 2006-03-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2005100196662A Pending CN1745902A (en) | 2005-10-26 | 2005-10-26 | Dipole corona electrostatic dust-proof device |
Country Status (1)
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| CN (1) | CN1745902A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013029436A1 (en) * | 2011-08-29 | 2013-03-07 | 漳州万利达生活电器有限公司 | Stucture of electrostatic de-dusting device |
-
2005
- 2005-10-26 CN CNA2005100196662A patent/CN1745902A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013029436A1 (en) * | 2011-08-29 | 2013-03-07 | 漳州万利达生活电器有限公司 | Stucture of electrostatic de-dusting device |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20060315 |