CN104240872A - Pollution flashover prevention method for insulators of electrostatic precipitators - Google Patents
Pollution flashover prevention method for insulators of electrostatic precipitators Download PDFInfo
- Publication number
- CN104240872A CN104240872A CN201410504293.7A CN201410504293A CN104240872A CN 104240872 A CN104240872 A CN 104240872A CN 201410504293 A CN201410504293 A CN 201410504293A CN 104240872 A CN104240872 A CN 104240872A
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- Prior art keywords
- electrostatic precipitator
- high temperature
- insulator
- temperature resistant
- sulphurated siliastic
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- 239000012717 electrostatic precipitator Substances 0.000 title claims abstract description 52
- 239000012212 insulator Substances 0.000 title claims abstract description 51
- 238000000034 method Methods 0.000 title claims abstract description 24
- 230000002265 prevention Effects 0.000 title abstract 2
- 239000011248 coating agent Substances 0.000 claims description 17
- 238000000576 coating method Methods 0.000 claims description 17
- 238000009413 insulation Methods 0.000 claims description 10
- 238000010926 purge Methods 0.000 claims description 10
- 230000008901 benefit Effects 0.000 abstract description 8
- 229920002379 silicone rubber Polymers 0.000 abstract description 4
- 238000010073 coating (rubber) Methods 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 11
- 230000003373 anti-fouling effect Effects 0.000 description 10
- 238000010438 heat treatment Methods 0.000 description 9
- 238000012423 maintenance Methods 0.000 description 8
- 230000005684 electric field Effects 0.000 description 5
- 230000005611 electricity Effects 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- 239000002352 surface water Substances 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- 206010037544 Purging Diseases 0.000 description 3
- 238000011109 contamination Methods 0.000 description 3
- 239000003546 flue gas Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000004568 cement Substances 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 230000005619 thermoelectricity Effects 0.000 description 1
Landscapes
- Electrostatic Separation (AREA)
- Insulators (AREA)
Abstract
The invention discloses a pollution flashover prevention method for insulators of electrostatic precipitators. Under the condition that humidity is not higher than 70%, the surfaces of the insulators of the electrostatic precipitators are coated with high-temperature-resistant vulcanized silicon rubber to form high-temperature-resistant vulcanized silicon rubber coatings, the electrostatic precipitators are used for dedusting under the condition that the insulators of the electrostatic precipitators are not heated or purged, and the high-temperature-resistant vulcanized silicon rubber is resistant to high temperature at least 130 DEG C. By the technical scheme, dedusting can be realized by the electrostatic precipitators under the condition that the insulators of the electrostatic precipitators are not heated or purged, pollution flashover of the insulators of the electrostatic precipitators can be avoided completely, and pretty considerable economic benefit is achieved.
Description
Technical field
The present invention relates to a kind of method of electrostatic precipitator insulator dirt-proof.
Background technology
In the industry such as thermoelectricity, cement, electrostatic precipitator is generally provided with incubator, and adopts electric heater to heat (being heated to 110-130 DEG C) its insulator, to reach the object of insulator side's pollution flashover.Or adopt dry spiral wind to purge insulator.
Although electric-heating technology is very ripe, need to use a large amount of electric heaters, need to consume a large amount of electric energy to maintain the temperature of incubator simultaneously.When heater failure or when losing power supply, usually cause insulator surface condense and pollution flashover occurs, the heat that pollution flashover produces makes insulator surface nonuniform heating and bursts, and electric field is forced to out of service, and dust collector efficiency declines.Exit electric field more time, there will be the defective phenomenon of disposal of pollutants.
And spiral wind purging system complex process, maintenance are large, and reliability is also poor.
Therefore, a kind of method that can solve problems such as method exists high energy consumption, maintenance is large, cost is high, poor stability such as the heating of electrostatic precipitator insulator or spiral wind purgings of exploitation is needed badly.
Summary of the invention
The object of the invention is to overcome above-mentioned defect, a kind of method of electrostatic precipitator insulator dirt-proof is provided, wherein, in humidity not higher than under the condition of 70%, at the high temperature resistant sulphurated siliastic of surface-coated of described electrostatic precipitator insulator, to form high temperature resistant sulphurated siliastic coating, and under the condition do not heated electrostatic precipitator insulator and purge, use described electrostatic precipitator to carry out dedusting, described high temperature resistant sulphurated siliastic is at least tolerate the sulphurated siliastic of 130 DEG C.
Preferably, the thickness of described high temperature resistant sulphurated siliastic coating is 0.2-0.8mm.
Pass through technique scheme, can under condition electrostatic precipitator insulator not heated and purge, use described electrostatic precipitator to carry out dedusting, and the generation of electrostatic precipitator insulator contamination phenomenon can be avoided completely, achieve very considerable economic benefit.For the 300MW unit of embodiment 1, the year for antifouling work drops into and only needs 2.5 ten thousand yuan, compared with the heating antifouling work of routine, year electrical energy saving can reach 800,000 degree, the electricity charge 320,000 yuan, save spare part and maintenance cost 20,000 yuan, can obtain the year economic benefit of 31.5 ten thousand yuan.
Other features and advantages of the present invention are described in detail in embodiment part subsequently.
Embodiment
Below the specific embodiment of the present invention is described in detail.Should be understood that, embodiment described herein, only for instruction and explanation of the present invention, is not limited to the present invention.
The invention provides a kind of method of electrostatic precipitator insulator dirt-proof, wherein, in humidity not higher than under the condition of 70%, at the high temperature resistant sulphurated siliastic of surface-coated of described electrostatic precipitator insulator, to form high temperature resistant sulphurated siliastic coating, and under the condition do not heated electrostatic precipitator insulator and purge, use described electrostatic precipitator to carry out dedusting, described high temperature resistant sulphurated siliastic is at least tolerate the sulphurated siliastic of 130 DEG C.
According to method of the present invention, when the high temperature resistant sulphurated siliastic of the surface-coated of electrostatic precipitator insulator, the link can cancelled heating or purge, this means to cancel hundreds of heaters or purging device, and the relevant equipment such as cable, control device, thus save a large amount of construction investments; In the operation phase, because heating or blow device can be cancelled, save a large amount of electric energy, and the relevant work such as system maintenance, maintenance, further reduce operating cost; And phenomenon, the stability that the equipment that adds runs and the reliability of power plant's forced outage that method of the present invention also eliminates the electrostatic precipitator insulator contamination damage because fuser malfunction causes and causes.
Described in the present invention it is pointed out that under the condition do not heated, refer to and do not need extra heater, such as, the power that each insulator is used for antifouling work and is equipped with is the heater of 1.5KW, heats described electrostatic precipitator.
According to the present invention, the thickness of high temperature resistant sulphurated siliastic layer is had no particular limits, as long as the generation of electric cleaner insulator contamination phenomenon effectively can be prevented.Under normal circumstances, consider antifouling work effect, preventive effect duration and cost, the thickness of described high temperature resistant sulphurated siliastic layer can be 0.2-0.8mm, more preferably 0.3-0.5mm.
Wherein, described " the high temperature resistant sulphurated siliastic in surface-coated room at described electrostatic precipitator insulator " refers to surfaces externally and internally (being also inside and outside wall) the described high temperature resistant sulphurated siliastic floor of upper evenly coating at insulator, completely isolated with the condensation will formed in insulator and equipment running process, flue gas and air.
According to the present invention, in order to ensure further described high temperature resistant sulphurated siliastic layer can firmly, stable and be seamlessly attached to the surface of insulator, preferably, before the high temperature resistant sulphurated siliastic of coating, the method also comprises cleans the surfaces externally and internally of insulator, and under draughty condition, apply described high temperature resistant sulphurated siliastic layer.
According to the present invention, the electrostatic precipitator insulator being coated with described high temperature resistant sulphurated siliastic layer can ensure that it is not less than 500M Ω at insulation resistance over the ground, run under being preferably the condition of 500-800M Ω, thus effectively can ensure the insulation effect of electrostatic precipitator.
According to the present invention, the electrostatic precipitator insulator being coated with described high temperature resistant sulphurated siliastic layer can carry out work under the natural temperature in electrostatic precipitator running, generally, to in the process of flue gas ash removal, the calorigenic action of the temperature of carrying due to flue gas itself and equipment itself, described natural temperature generally can reach 90-130 DEG C.
According to the present invention, described electrostatic precipitator can carry out dedusting under the voltage of its routine, and such as, dedusting voltage can be 65-85kV.
According to the present invention, described high temperature resistant sulphurated siliastic can for the commercially available various sulphurated siliastics that can tolerate at least 130 DEG C of high temperature, also modification can be carried out with the high temperature making it tolerate at least 130 DEG C according to existing room temperature vulcanized silicone rubber, the method of described modification is conventionally known to one of skill in the art, does not repeat them here.
Below will be described the present invention by embodiment.Set forth the present invention for 300MW unit in following examples, but be not used in limitation of the present invention.
In following examples, described high temperature resistant sulphurated siliastic is purchased from Beijing Zhong electricity Heng Yuan power equipment supply center; Article No. is H-1, can tolerate the high temperature of 130 DEG C.
According to electrostatic precipitator shop instruction (heater drops into operation to be cancelled), no-load applied voltage test is carried out to electric cleaner.
Embodiment 1
The present embodiment is for illustration of the method for electrostatic precipitator insulator dirt-proof provided by the invention.
Under equipment shut down condition, by clean for the cleaning of the inside and outside wall of electrostatic precipitator insulator, (humidity is lower than 70% in the dry state, in draughty environment), the inside and outside wall of electrostatic precipitator insulator evenly applies high temperature resistant sulphurated siliastic, forms the high temperature resistant sulphurated siliastic layer of average thickness 0.4mm.Check the hydrophobicity of coating at insulator surface water spray with watering can, the coating surface globule is uniformly distributed and is not linked to be sheet, shows that hydrophobicity is good.
Use 2500V insulation meter, detect each electric field cathode insulation and be greater than 500M Ω.When exiting all muff heaters, it is qualified that no-load applied voltage test detects.
In the running of a year, operating temperature is 90-130 DEG C, and electrostatic precipitator voltage is 72KV, and the phenomenon of the sub-pollution flashover of naked occurs.
It is 2.5 ten thousand yuan that year for antifouling work drops into, and compared with the heating antifouling work of routine, year electrical energy saving can reach 800,000 degree, the electricity charge 320,000 yuan, saves spare part and maintenance cost 20,000 yuan, can obtain the year economic benefit of 31.5 ten thousand yuan.
Embodiment 2
Under equipment shut down condition, by clean for the cleaning of the inside and outside wall of electrostatic precipitator insulator, (humidity is lower than 70% in the dry state, in draughty environment), the inside and outside wall of electrostatic precipitator insulator evenly applies high temperature resistant sulphurated siliastic, forms the high temperature resistant sulphurated siliastic layer of average thickness 0.3mm.Check the hydrophobicity of coating at insulator surface water spray with watering can, the coating surface globule is uniformly distributed and is not linked to be sheet, shows that hydrophobicity is good.
Using 2500V insulation meter, detecting each electric field cathode insulation for being greater than 500M Ω.When exiting all muff heaters, it is qualified that no-load applied voltage test detects.
In the running of a year, operating temperature is 90-130 DEG C, and electrostatic precipitator voltage is 65KV, and the phenomenon of the sub-pollution flashover of naked occurs.
It is 2.0 ten thousand yuan that year for antifouling work drops into, and compared with the heating antifouling work of routine, year electrical energy saving can reach 800,000 degree, the electricity charge 320,000 yuan, saves spare part and maintenance cost 20,000 yuan, can obtain the year economic benefit of 320,000 yuan.
Embodiment 3
Under equipment shut down condition, by clean for the cleaning of the inside and outside wall of electrostatic precipitator insulator, (humidity is lower than 70% in the dry state, in draughty environment), the inside and outside wall of electrostatic precipitator insulator evenly applies high temperature resistant sulphurated siliastic, forms the high temperature resistant sulphurated siliastic layer of average thickness 0.5mm.Check the hydrophobicity of coating at insulator surface water spray with watering can, the coating surface globule is uniformly distributed and is not linked to be sheet, shows that hydrophobicity is good.
Using 2500V insulation meter, detecting each electric field cathode insulation for being greater than 500M Ω.When exiting all muff heaters, it is qualified that no-load applied voltage test detects.
In the running of a year, operating temperature is 90-130 DEG C, and electrostatic precipitator voltage is 80KV, and the phenomenon of the sub-pollution flashover of naked occurs.
It is 30,000 yuan that year for antifouling work drops into, and compared with the heating antifouling work of routine, year electrical energy saving can reach 800,000 degree, the electricity charge 320,000 yuan, saves spare part and maintenance cost 20,000 yuan, can obtain the year economic benefit of 310,000 yuan.
In above embodiment 1-3, after equipment runs 1 year, check under equipment shut down condition, cleaning insulator surface, check whether the high temperature resistant sulphurated siliastic layer of internal and external walls has and come off.Come off if having, then carry out the high temperature resistant sulphurated siliastic layer of coating.Check the hydrophobicity of coating with watering can at insulator surface water spray, as hydrophobicity is good, can continue to use.When coating layer thickness is generally less than 0.1mm, again apply.
As can be seen from above embodiment 1-3, method provided by the invention when not heating electrostatic precipitator insulator and purge, can prevent the generation of pollution flashover phenomenon effectively.And save a large amount of human and material resources and financial resources, achieve considerable economic benefit.
More than describe the preferred embodiment of the present invention in detail; but the present invention is not limited to the detail in above-mentioned execution mode, within the scope of technical conceive of the present invention; can carry out multiple simple variant to technical scheme of the present invention, these simple variant all belong to protection scope of the present invention.
It should be noted that in addition, each the concrete technical characteristic described in above-mentioned embodiment, in reconcilable situation, can be combined by any suitable mode.In order to avoid unnecessary repetition, the present invention illustrates no longer separately to various possible compound mode.
In addition, also can carry out combination in any between various different execution mode of the present invention, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (6)
1. the method for an electrostatic precipitator insulator dirt-proof, it is characterized in that, in humidity not higher than under the condition of 70%, at the high temperature resistant sulphurated siliastic of surface-coated of described electrostatic precipitator insulator, to form high temperature resistant sulphurated siliastic coating, and under the condition do not heated electrostatic precipitator insulator and purge, use described electrostatic precipitator to carry out dedusting, described high temperature resistant sulphurated siliastic is at least tolerate the sulphurated siliastic of 130 DEG C.
2. method according to claim 1, wherein, the thickness of described high temperature resistant sulphurated siliastic coating is 0.2-0.8mm.
3. method according to claim 1 and 2, wherein, the electrostatic precipitator insulator insulation resistance being over the ground coated with high temperature resistant sulphurated siliastic coating is not less than 500-800M Ω.
4. method according to claim 3, wherein, the electrostatic precipitator insulator insulation resistance being over the ground coated with high temperature resistant sulphurated siliastic coating is 500-800M Ω.
5. according to the method in claim 1-4 described in any one, wherein, the dedusting temperature of described electrostatic precipitator is 90-130 DEG C.
6. according to the method in claim 1-4 described in any one, wherein, the dedusting voltage of described electrostatic precipitator is 65-85KV.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410504293.7A CN104240872A (en) | 2014-09-26 | 2014-09-26 | Pollution flashover prevention method for insulators of electrostatic precipitators |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410504293.7A CN104240872A (en) | 2014-09-26 | 2014-09-26 | Pollution flashover prevention method for insulators of electrostatic precipitators |
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| CN104240872A true CN104240872A (en) | 2014-12-24 |
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| CN201410504293.7A Pending CN104240872A (en) | 2014-09-26 | 2014-09-26 | Pollution flashover prevention method for insulators of electrostatic precipitators |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106861916A (en) * | 2017-02-20 | 2017-06-20 | 中国神华能源股份有限公司 | A kind of electric cleaner and the method for electric cleaner dedusting |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2136698Y (en) * | 1992-10-28 | 1993-06-23 | 刘建堂 | High voltage insulator |
| JPH0684417A (en) * | 1992-09-03 | 1994-03-25 | Meidensha Corp | Polymeric material for outdoor use |
| US5938823A (en) * | 1997-04-18 | 1999-08-17 | Carrier Corporation | Integrated electrostatic collection and microwave sterilization for bioaerosol air purification |
| CN2472815Y (en) * | 2000-12-20 | 2002-01-23 | 四平市巨元换热设备有限公司 | Anti-dew forming high effeciency high voltage static duster |
-
2014
- 2014-09-26 CN CN201410504293.7A patent/CN104240872A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0684417A (en) * | 1992-09-03 | 1994-03-25 | Meidensha Corp | Polymeric material for outdoor use |
| CN2136698Y (en) * | 1992-10-28 | 1993-06-23 | 刘建堂 | High voltage insulator |
| US5938823A (en) * | 1997-04-18 | 1999-08-17 | Carrier Corporation | Integrated electrostatic collection and microwave sterilization for bioaerosol air purification |
| CN2472815Y (en) * | 2000-12-20 | 2002-01-23 | 四平市巨元换热设备有限公司 | Anti-dew forming high effeciency high voltage static duster |
Non-Patent Citations (4)
| Title |
|---|
| 卫国华: "静电除尘绝缘子的故障分析及改造措施", 《电气时代》 * |
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| 范宙虹，张弘驰，张玉琴: "提高静电除尘器可靠性的探讨", 《煤矿环境保护》 * |
| 贾志东，陆海，胡亚荣，陈灿: "高湿气候下RTV防污闪涂料的运行特性分析", 《电网技术》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106861916A (en) * | 2017-02-20 | 2017-06-20 | 中国神华能源股份有限公司 | A kind of electric cleaner and the method for electric cleaner dedusting |
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Application publication date: 20141224 |