CN106994392B - Boiler smoke wet electrical dust precipitator - Google Patents
Boiler smoke wet electrical dust precipitator Download PDFInfo
- Publication number
- CN106994392B CN106994392B CN201710337606.8A CN201710337606A CN106994392B CN 106994392 B CN106994392 B CN 106994392B CN 201710337606 A CN201710337606 A CN 201710337606A CN 106994392 B CN106994392 B CN 106994392B
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- CN
- China
- Prior art keywords
- airflow
- distribution board
- dirt pocket
- dust
- boiler smoke
- 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.)
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Classifications
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- 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
- B03C3/02—Plant or installations having external electricity supply
- B03C3/16—Plant or installations having external electricity supply wet type
-
- 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
- B03C3/36—Controlling flow of gases or vapour
- B03C3/361—Controlling flow of gases or vapour by static mechanical means, e.g. deflector
-
- 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
- B03C3/74—Cleaning the electrodes
- B03C3/78—Cleaning the electrodes by washing
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- Electrostatic Separation (AREA)
Abstract
The invention discloses a kind of boiler smoke wet electrical dust precipitators, case top is equipped with insulation room, insulation is indoor to be equipped with electrode fixing device, room side insulate equipped with charge device, import reducer pipe is equipped on the left of dirt pocket, right side is equipped with outlet reducer pipe, import reducer pipe is equipped with airflow-distribution board, airflow-distribution board connects distribution grid rapping apparatus, airflow-distribution board includes the first airflow-distribution board, second airflow-distribution board, third airflow-distribution board, the lower part of second airflow-distribution board is equipped with deflector, third airflow-distribution board is equipped with deflector, electric discharge cathode is equipped in dirt pocket, dust anode, electric discharge cathode top connects charge device by electrode fixing device, spray equipment is equipped at the top of dirt pocket, connection ash bucket below dirt pocket.During using the present invention to boiler smoke dedusting, boiler smoke uniformly enters dirt pocket, and under the charge effect of electric discharge cathode, dust is adsorbed by dust anode, and adsorbing powder dust effect is good, high dust collection efficiency.
Description
Technical field
The present invention relates to dust removal fields, and in particular to a kind of boiler smoke wet electrical dust precipitator.
Background technology
The usual abbreviation WESP of wet electrical dust precipitator, for handling the new cleaner containing micro dust and microparticle, mainly
It is to administer atmospheric dust dirt for removing containing harmful substances such as dirt, acid mist, water droplet, aerosol, stink, the PM2.5 in humid gas
The ideal equipment of dye.WESP have high dust collection efficiency, the pressure loss is small, easy to operate, energy consumption is small, movement-less part, without secondary
Airborne dust, maintenance cost be low, the production downtime is short, be operable with below flue gas dew point temperature, due to compact-sized and can with it is other
The advantages that smoke gas treatment equipment be combined with each other, design form is diversified.
Power plant, steel mill boiler smoke wet desulphurization after in ash-laden gas, smoke moisture is big, using wet electrical dust precipitator
Processing flue gas can effectively collect fine particle (PM2.5 dust, SO3 acid mists, aerosol), heavy metal (Hg, As, Se, Pb,
Cr), organic pollution (polycyclic aromatic hydrocarbon, dioxin) etc., containing the soot emissions in wet flue gas up to 10mg/m even 5mg/m with
Under.
When flue gas enters wet electrical dust precipitator by flue, since the structure setting of air inlet and deduster in itself is unreasonable,
The air-flow of flue gas is caused to be unevenly distributed in deduster.Influence of the air flow method unevenness to electric precipitator includes following several sides
Face：1st, the dust accumulation amount of dust arrester is uneven, and when spray water spray is cleared up, the big place cleaning of dust accumulation amount is incomplete；2nd, local gas
The raw reentrainment of dust of miscarriage；3rd, the cathode electrode dust stratification in air-flow more slowly area is excessive, and the corona of cathode electrode is inhibited to generate；4th, low gas
Stream area easily causes local housing corrosion since temperature is relatively low.
Therefore the uniformity of air flow method has a significant impact to efficiency of dust collection, and control flue gas stream is uniformly that realization is effectively clear
The basic condition of reason.The soot emissions index of below 5mg/Nm3 is realized in the requirement of WESP technologies, and capture target is less than 1 micron
Superfine particulate matter, even if the air flow method of part is uneven or disturbance is likely to cause the escape of captured particle, cause row
Growth is put, therefore WESP should control flue gas even distribution coefficient below 0.13.
Invention content
To solve the above problems, the invention discloses a kind of boiler smoke wet electrical dust precipitators.
In order to reach object above, the present invention provides following technical solution：
A kind of boiler smoke wet electrical dust precipitator, including housing, the case top is equipped with insulation room, the insulation room one
Side is equipped with charge device, and the insulation is indoor to be equipped with electrode fixing device, and import reducer pipe, dedusting are equipped on the left of the dirt pocket
Outlet reducer pipe is equipped on the right side of room, the import reducer pipe is equipped with airflow-distribution board, and the airflow-distribution board connection distribution grid shakes
Beat device, the airflow-distribution board includes the first airflow-distribution board, the second airflow-distribution board, third airflow-distribution board, and described the
The lower part of two airflow-distribution boards is equipped with deflector, and the deflector of the second airflow-distribution board lower part is at certain angle of inclination inclination
It is arranged on the second airflow-distribution board；The third airflow-distribution board is equipped with deflector, on the third airflow-distribution board
Deflector, which is at certain angle of inclination, to be inclined on third airflow-distribution board；Electric discharge cathode, dust are equipped in the dirt pocket
Anode, the electric discharge cathode top connect charge device by electrode fixing device, spray equipment are equipped at the top of the dirt pocket,
The spray head of the spray equipment corresponds to dust anode, and ash bucket is connected below the dirt pocket.Boiler smoke is in airflow-distribution board
Under the action of, dirt pocket is uniformly entered, air-flow is uniform, and under the charge effect of electric discharge cathode, dust is adsorbed by dust anode,
Adsorbing powder dust effect is good, high dust collection efficiency；Due to when dust is influenced to move in import reducer pipe by its own gravity in flue gas
It moves downward, top dust concentration is low, and lower part dust concentration is high, causes the Dust distribution in boiler smoke uneven, therefore second
Deflector on airflow-distribution board and third airflow-distribution board effectively can play the role of water conservancy diversion to air-flow so that air flow method
Uniformly.
Further, puff prot, the puff prot are equipped between second airflow-distribution board and third airflow-distribution board
The top of import reducer pipe is fixed at, the puff prot, which is at certain angle of inclination, to be inclined on import reducer pipe, institute
Puff prot connection wind turbine is stated, the wind turbine is equipped with temperature exchanger, and the temperature exchanger connects controller；The import becomes
Diameter pipe is equipped with detection hole, and the detection hole is equipped with temperature detector, and the temperature detector connects the controller.According to inspection
The gas temperature that the temperature control puff prot that gaging hole detects sprays.
Further, the 4th air distribution plate is equipped with above the puff prot, the 4th air distribution plate is fixedly connected on import change
On diameter pipe.The air-flow that puff prot sprays can be effectively uniformly distributed by the 4th air distribution plate, reduce the airflow influence to boiler smoke.
Further, the detection hole is equipped with flow rate detector, and the flow rate detector connects the controller.Detection hole
Flow velocity can be monitored in real time, and flow velocity is detected and fed back on controller, controller control puff prot sprays the flow velocity of gas,
Accomplish intelligentized control method.
Further, the angle of inclination of the deflector is 30-60 °.
Further, the percent opening of the airflow-distribution board is 35-60%.
Further, the housing of the wet electrical dust precipitator is equipped with ladder, platform, maintenance door.
Further, the dirt pocket bottom is equipped with bearing.
Beneficial effects of the present invention：Import reducer pipe is equipped with airflow-distribution board, airflow-distribution board connection distribution grid rapping dress
It puts, the air flow method of tunnel gas is uniform, and the dust being distributed on dust motor is uniform, can be fast and effectively clear when spraying water spray
Reason falls the dust on collecting electrode, and good dedusting effect improves the uniformity of air flow method, can purifying rate be reached 99%.
Description of the drawings
The structure diagram of Fig. 1, the present invention；
Fig. 2, controller control principle drawing of the present invention.
Reference numerals list：Housing 100, insulation room 1, charge device 2, electrode fixing device 3, dirt pocket 4, electric discharge cathode
41st, dust anode 42, import reducer pipe 5, detection hole 51, temperature detector 52, flow rate detector 53, outlet reducer pipe 6, air-flow
Distribution grid 7, rapping apparatus 70, the first airflow-distribution board 71, the second airflow-distribution board 72, deflector 721, third airflow-distribution board
73rd, puff prot 74, controller 75, the 4th air distribution plate 76, wind turbine 77, temperature exchanger 78, electrode fixing device 8, spray equipment
8th, ash bucket 9, ladder 200, platform 300, maintenance door 400, bearing 500.
Specific embodiment
With reference to the accompanying drawings and detailed description, the present invention is furture elucidated, it should be understood that following specific embodiments are only
For illustrating the present invention rather than limiting the scope of the invention.
Embodiment 1
A kind of boiler smoke wet electrical dust precipitator as shown in Figure 1, including housing 100, case top is equipped with insulation room 1,
The insulation room side is equipped with charge device 2, and insulation is indoor to be equipped with electrode fixing device 3, and insulation is equipped with dirt pocket 4 below room,
Import reducer pipe 5, dirt pocket right side are equipped on the left of dirt pocket equipped with outlet reducer pipe 6, import reducer pipe is equipped with airflow-distribution board
7, airflow-distribution board connection distribution grid rapping apparatus 70, dirt pocket is interior to be equipped with electric discharge cathode 41, dust anode 42, discharges on cathode
Portion connects charge device by electrode fixing device, and spray equipment 8 is equipped at the top of dirt pocket, and the spray head of spray equipment corresponds to collection
Dirt anode, dirt pocket lower section connection ash bucket 9.
Airflow-distribution board include the first airflow-distribution board 71, the second airflow-distribution board 72, third airflow-distribution board 73, second
The lower part of airflow-distribution board is equipped with deflector 721, and the deflector of the second airflow-distribution board lower part is at certain angle of inclination inclination and sets
It puts on the second airflow-distribution board；Third airflow-distribution board is equipped with deflector, and the deflector on third airflow-distribution board is in one
Constant inclination rake angle is inclined on third airflow-distribution board, and the angle of inclination of deflector is 30-60 °.In the present embodiment,
The percent opening of airflow-distribution board is 35-60%.Since dust is influenced to move in import reducer pipe by its own gravity in flue gas
When move downward, top dust concentration is low, and lower part dust concentration is high, causes air flow method uneven.
Puff prot 74 is equipped between second airflow-distribution board and third airflow-distribution board, puff prot is fixed at import change
The top of diameter pipe, puff prot connection wind turbine 77, wind turbine are equipped with temperature exchanger 78, and temperature exchanger is electrically connected controller
75, controller is mounted on housing；Import reducer pipe is additionally provided with detection hole 51, and detection hole is equipped with temperature detector 52, temperature inspection
It surveys device and is electrically connected controller.Heat exchanger sprays cold air using condensation water heat exchanger, realization, and boiler smoke is cooled down,
The cold air temperature that the temperature control puff prot detected according to detection hole sprays, it is ensured that temperature is unsuitable too low, causes local boiler
Flue gas condensing it is serious, the temperature difference is avoided to cause larger airflow fluctuation.On the one hand, flue gas generates a large amount of condensate liquids after cooling
Drop, enters the indoor dust anode of dedusting with flue gas, is conducive to dust anode surface and forms stable natural flowing water film, powder
Dirt is unsuitable hardened, reduces the spray number of dust anode top.On the other hand, the water droplet packet after the dust in flue gas is cooled
It encloses, increases dust size size, it can be achieved that being captured to the dust of PM2.5 once, dust removing effects further improve.In addition, pot
After kiln gas is cooled down, air-flow velocity reduces, and increases residence time of the flue gas in dirt pocket, further enhances dedusting effect
Fruit.
The 4th air distribution plate 76 is equipped with above puff prot, the 4th air distribution plate is fixedly connected on import reducer pipe.4th cloth
The air-flow that puff prot sprays can be effectively uniformly distributed by aerofoil, and airflow fluctuation can be reduced by carrying out stream to cold air, be reduced to pot
The airflow influence of kiln gas.
Detection hole is equipped with flow rate detector 53, and flow rate detector is electrically connected controller.Detection hole can monitor stream in real time
Speed is detected flow velocity and feeds back on controller, and controller control puff prot sprays the flow velocity of gas, accomplishes intelligent control
System keeps the gas flow rate that puff prot sprays consistent with the filtering flue gas flow rate in import reducer pipe, flow velocity difference is avoided to cause
Airflow fluctuation.
The housing of wet electrical dust precipitator is equipped with ladder 200, platform 300, maintenance door 400.Facilitate maintenance overhaul.
Dirt pocket bottom is equipped with bearing 500.Bearing plays fixed support.
Wet electrical dust precipitator operation principle is：Charged, collection, deashing.High-voltage corona discharge causes dust charged, after charged
Dust dust plate tube is reached under the action of electric field force, by the way of periodic flushing, make dust with the flowing for washing away liquid
And it removes.Wet electrical dust precipitator mainly handles aqueous higher or even saturation humid gas.Wet electrical dust precipitator one kind is using resistance to
Etching conductive material (can be the excellent nonmetallic materials of electric conductivity or the metal material with corrosion resistance characteristic), which is done, to be collected
Dirt pole, one kind are to be formed the nonconducting nonmetallic materials of conductive moisture film with by water spray or overflow water and done dust collecting electrode.
The technical means disclosed in the embodiments of the present invention is not limited only to the technological means disclosed in the above embodiment, further includes
By more than technical characteristic arbitrarily the formed technical solution of combination.It should be pointed out that for those skilled in the art
For, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also considered as
Protection scope of the present invention.
Claims (7)
1. a kind of boiler smoke wet electrical dust precipitator, it is characterised in that：Including housing, the case top is equipped with insulation room, institute
It states insulation room side and is equipped with charge device, the insulation is indoor to be equipped with electrode fixing device, and import is equipped on the left of the dirt pocket
Outlet reducer pipe is equipped on the right side of reducer pipe, dirt pocket, the import reducer pipe is equipped with airflow-distribution board, and the airflow-distribution board connects
Distribution grid rapping apparatus is connect, the airflow-distribution board includes the first airflow-distribution board, the second airflow-distribution board, third air flow method
Plate, the lower part of second airflow-distribution board are equipped with deflector, and the deflector of the second airflow-distribution board lower part is in a constant inclination
Rake angle is inclined on the second airflow-distribution board；The third airflow-distribution board is equipped with deflector, the third air-flow
Deflector on distribution grid, which is at certain angle of inclination, to be inclined on third airflow-distribution board；Electric discharge is equipped in the dirt pocket
Cathode, dust anode, the electric discharge cathode top connect charge device by electrode fixing device, are equipped at the top of the dirt pocket
Spray equipment, the spray head of the spray equipment correspond to dust anode, ash bucket are connected below the dirt pocket；Second air-flow
Puff prot is equipped between distribution grid and third airflow-distribution board, the puff prot is fixed at the top of import reducer pipe, institute
It states puff prot and is at certain angle of inclination and be inclined on import reducer pipe, the puff prot connects wind turbine, is set on the wind turbine
There is temperature exchanger, the temperature exchanger connects controller；The import reducer pipe is equipped with detection hole, and the detection hole is set
There is temperature detector, the temperature detector connects the controller.
2. a kind of boiler smoke wet electrical dust precipitator as described in claim 1, it is characterised in that：It is equipped with above the puff prot
4th air distribution plate, the 4th air distribution plate are fixedly connected on import reducer pipe.
3. a kind of boiler smoke wet electrical dust precipitator as described in claim 1, it is characterised in that：The detection hole is equipped with flow velocity
Detector, the flow rate detector connect the controller.
4. a kind of boiler smoke wet electrical dust precipitator as described in claim 1, it is characterised in that：The inclination angle of the deflector
Spend is 30-60 °.
5. a kind of boiler smoke wet electrical dust precipitator as described in claim 1, it is characterised in that：The airflow-distribution board is opened
Porosity is 35-60%.
6. a kind of boiler smoke wet electrical dust precipitator as described in claim 1, it is characterised in that：The wet electrical dust precipitator
Housing is equipped with ladder, platform, maintenance door.
7. a kind of boiler smoke wet electrical dust precipitator as described in claim 1, it is characterised in that：The dirt pocket bottom is equipped with
Bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710337606.8A CN106994392B (en) | 2017-05-15 | 2017-05-15 | Boiler smoke wet electrical dust precipitator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710337606.8A CN106994392B (en) | 2017-05-15 | 2017-05-15 | Boiler smoke wet electrical dust precipitator |
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| Publication Number | Publication Date |
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| CN106994392A CN106994392A (en) | 2017-08-01 |
| CN106994392B true CN106994392B (en) | 2018-06-12 |
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| CN201710337606.8A Active CN106994392B (en) | 2017-05-15 | 2017-05-15 | Boiler smoke wet electrical dust precipitator |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108722094A (en) * | 2018-08-01 | 2018-11-02 | 南京龙源环保有限公司 | A kind of final dusting equipment for detaching fine particle dust in tail gas |
| CN110355001B (en) * | 2019-08-06 | 2020-11-06 | 霍山知行信息科技有限公司 | Quick protection system of electrostatic precipitator |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101862705A (en) * | 2010-06-22 | 2010-10-20 | 浙江工商大学 | Mixed-flow electric dust collector |
| CN201684661U (en) * | 2010-06-08 | 2010-12-29 | 南京林业大学 | Artificial board industry wet electrostatic dust collector |
| CN204220297U (en) * | 2014-11-11 | 2015-03-25 | 浙江浩普环保工程有限公司 | A kind of wet cottrell |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100913609B1 (en) * | 2008-03-28 | 2009-08-26 | 한국기계연구원 | Wet electrostatic precipitator |
| KR101253456B1 (en) * | 2012-08-20 | 2013-04-11 | 한전산업개발 주식회사 | Wet electrostatic precipitator and the plant's dust removal equipment including coal by using cyclone |
| CN206911571U (en) * | 2017-05-15 | 2018-01-23 | 江苏瑞洁环境工程科技有限责任公司 | Boiler smoke wet electrical dust precipitator |
-
2017
- 2017-05-15 CN CN201710337606.8A patent/CN106994392B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201684661U (en) * | 2010-06-08 | 2010-12-29 | 南京林业大学 | Artificial board industry wet electrostatic dust collector |
| CN101862705A (en) * | 2010-06-22 | 2010-10-20 | 浙江工商大学 | Mixed-flow electric dust collector |
| CN204220297U (en) * | 2014-11-11 | 2015-03-25 | 浙江浩普环保工程有限公司 | A kind of wet cottrell |
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| Publication number | Publication date |
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| CN106994392A (en) | 2017-08-01 |
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Denomination of invention: Wet electrostatic precipitator for boiler flue gas Effective date of registration: 20210918 Granted publication date: 20180612 Pledgee: Bank of Jiangsu Co.,Ltd. Yancheng branch Pledgor: JIANGSU RUIJIE ENVIRONMENTAL ENGINEERING SCIENCE & TECHNOLOGY Co.,Ltd. Registration number: Y2021320000236 |