CN105413871B - A kind of hot electrostatic precipitator subregion spray coupling moisture film rinses deashing technique and device - Google Patents
A kind of hot electrostatic precipitator subregion spray coupling moisture film rinses deashing technique and device Download PDFInfo
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- CN105413871B CN105413871B CN201510979728.8A CN201510979728A CN105413871B CN 105413871 B CN105413871 B CN 105413871B CN 201510979728 A CN201510979728 A CN 201510979728A CN 105413871 B CN105413871 B CN 105413871B
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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
- B03C3/34—Constructional details or accessories or operation thereof
- B03C3/74—Cleaning the electrodes
- B03C3/78—Cleaning the electrodes by washing
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Abstract
Deashing technique and device are rinsed the present invention relates to a kind of hot electrostatic precipitator subregion spray coupling moisture film, device final stage electric field purge mode is that subregion spray coupling continues the efficient deashing of moisture film, without anode and cathode vibration dust-cleaning system；Anode is using the good composite material anode plate of surface moisture film film forming characteristics；Moisture film rinse-system water source is quoted from filtered water tank, moisture film flushing water supervisor and many anode water distributor firm welding composition independent pipe networks；Quoted from filtered water tank, every is sprayed supervisor both sides and welds several branch pipes according to fish-bone form at spray irrigation system water source；Moisture film flushing liquid flows through composite material electrode plate surface by anode water distribution bottom of the tube apopore, will be deposited on after the dust particles of anode plate surface are rinsed well and flows into foul water tank；After foul water tank liquid is separated through horizontal screw centrifuge, clear liquid pumps into filtered water tank, body refuse recycling；It is sprayed pipe network spray flux and starts frequency setting principle and turns to 0.5~2% for control moment smoke moisture becomes.
Description
Technical field
Field, more particularly to a kind of subregion suitable for high temperature electrostatic deduster are administered the invention belongs to atmosphere pollution
It is sprayed coupling and continues moisture film deashing technique and device.
Background technology
In view of Environmental Protection in China administers pressure severe situation, active service Emission in Coal-fired Power Plant concentration standard is intended to basically reach
Or it is less than 5mg/Nm close to gas turbine group emission limit, i.e. chimney entrance total particulate concentration3.For large-scale coal fired power generation machine
For group, the flue gases purification route after coal combustion according to upstream and downstream position, need to typically pass sequentially through low nitrogen burning in stove →
Selective-catalytic-reduction denitrified → electrostatic precipitation → limestone-gypsum method wet desulphurization → wet static dedusting.Wherein wet electrostatic
Final one barrier that deduster is processed as coal-fired flue-gas particulate matter, in the wet flue gas treatment before chimney entrance, plays
The joint removing effects such as trapping desulfurization entrainment gypsum slurries, electrostatic precipitator escape fine particle, its excellent gas cleaning effect
Can be allowed to be widely applied rapidly in large-scale Thermal generation unit.However, in oil, chemical industry, smelting and other industries,
(integral coal gasification gas combustion-gas vapor combined cycle technology (IGCC) and supercharging even in current advanced energy source conversion system
Fluidized bed combustion combined cycle generation technology (PFBC)) high-temperature flue gas are often produced, will for certain special process or qualified discharge
Dedusting must be carried out to high-temperature flue gas, its smoke content is controlled within a certain specific limit value the need for asking.With conventional cigarette
Gas temperature conditionss are compared, and gas solid separation is implemented under hot conditions has difficulty higher, therefore high temperature electrostatic deduster (general place
Reason flue-gas temperature is more than 300 DEG C) as a kind of effective means for purifying coal-fired high-temperature flue gas, possess good application prospect, especially
In the industry such as metal smelt and manufacture of cement, at home and abroad application reaches certain scale for it, and over a period to come in high temperature cigarette
Gas disposal field occupies considerable status.But hot electrostatic precipitator is compared with conventional electric cleaner, there are some defects.It is logical
During normal dust collection, average grain diameter, unit hour quality, the arresting efficiency of the dust that each electric field is collected are along one, two,
3rd, level Four electric field equal distribution is presented drastically downward trend, and fly ash content is mostly between 50~200mg/m when reaching final stage electric field3,
Grain diameter is generally less than 2.5 microns, wherein the numbers of particles less than 1 micron accounts for more than 90%, particle ratio resistance is more between 1
×1011~5 × 1012Ω cm, now high resistivity dust accumulation causes inverse corona problem particularly on final stage electric field dust collecting pole plate
Prominent, specific manifestation dust collecting pole plate dust adhesive force increases deashing difficulty, dust secondary fly-up seriously, and corona current passes through dust
Layer conduction be not smooth, finally produces partial breakdown between the gap of dust layer, causes efficiency of dust collection significantly to deteriorate.
The content of the invention
Deashing difficulty and inverse corona serious problems that the present invention exists for hot electrostatic precipitator running, it is proposed that
Electric cleaner end electric field is sprayed coupling and continues the new ash removal method that moisture film washes away, its technology characteristics using a kind of small subregion
Washed away by the lasting moisture film of anode plate surface first will be deposited on dust collecting pole plate surface high resistivity dust layer cleaning it is thorough,
Periodically small subregion has been coupled simultaneously has been sprayed the deposition powder that technique removal is attached to discharge electrode and anode beams structural member surface
Dirt, the new ash removal method that the small lasting moisture film of subregion spray irrigation coupling washes away effectively prevent hot electrostatic precipitator and generally use
The secondary fly-up that causes of vibration dust-cleaning mode is serious and polar board surface accumulation of ash layer produces the inverse corona to cause efficiency of dust collection
Deteriorate problem, ensure that high temperature electrostatic deduster is realized continuing Effec-tive Function.
The present invention is realized in the following way：
A kind of hot electrostatic precipitator subregion is sprayed coupling and continues the efficient deashing device of moisture film, including a housing, institute
One end of housing is stated for smoke inlet, the relative other end is exhanst gas outlet, described housing bottom is to be provided with multiple and housing
The ash bucket that inside communicates, is divided into multiple deduster electric fields in described housing, and along the direction of flow of flue gas, in final stage
Spray irrigation device, moisture film flusher and positive plate and cathode suspended beam are sequentially provided with the housing of electric field from top to bottom,
Cathode line vertically downward is provided with described cathode suspended beam, and cathode suspended beam is connected with high voltage power supply.
Described spray irrigation device includes a filtered water tank, described filtered water tank be arranged in final stage electric field housing
Supervisor's connection, and supervisor described in each connected with multiple branch pipes, and nozzle is provided with described branch pipe.
Described spray irrigation device also includes a foul water tank, entrance and the final stage electric field housing bottom of described foul water tank
The ash bucket in portion is connected, and outlet is connected with a centrifuge, and the clear water of described centrifuge treatment is pumped into clear water by one
Case.
Described moisture film flusher includes that a moisture film being connected with filtered water tank rinses supervisor, and described moisture film rinses master
Pipe is connected with some anode water distributors, and the bottom of described anode water distributor is provided with apopore, and at the bottom of anode water distributor
Portion is provided with the positive plate corresponding with apopore.
What several anode superstructures were spaced is welded on housing；Described positive plate upper and lower part passes through bolt and sun respectively
Pole water distributor, the connection of anode lower frame.
Described positive plate is including but not limited to flexible using the good composite material anode plate of surface moisture film film forming characteristics
Fiber, hydrophilic modifying rigid anode plate or hydrophilic coating positive plate.
Described final stage electric field housing and inner part do preservative treatment.
Described negative electrode line style includes but is not limited to jaggies, RS prickle wires or fish-bone line.
Described cathode suspended beam is connected by the porcelain insulator being placed in insulated case with high voltage power supply.
The ash removal method of described device is as follows：
The initial coal-fired flue-gas of step 1 carry flue dust and enter conventional electric precipitation electric field, particulate matter of the particle diameter more than 5 μm in flue gas
It is captured；
Step 2 contains fine particle flue gas at large, the fine grained in the presence of electric field force into final stage electric field
Thing moves to composite anode plate surface, is quickly adsorbed by composite anode plate surface uniform water film；
After step 3 moisture film flushing water is delivered to moisture film flushing supervisor by filtered water tank through booster pump, into anode tube, through anode
Apopore outflow on water distributor, water is uniformly sprawled along composite material anode plate under gravity, will be enriched to positive plate table
The dust in face is rinsed well；
Step 4 flushing liquor enters gravity flow after ash bucket is collected and enters foul water tank；Sewage in foul water tank enters through feed pipe
Horizontal screw centrifuge carries out separation of solid and liquid；Part clear liquid is back to moisture film and rinses main pipe through booster pump, recycles；Another part is clear
Liquid enters spray irrigation branch pipe after pumping into spray irrigation supervisor through booster pump, finally by being fixed on the nozzle being sprayed on branch pipe
Spray, for intermittently rinsing cathode line and other fixed frames；
Described spray irrigation pipe network opens the frequency and regards smoke moisture amplitude of variation and the index change of outlet flue dust, by PLC
Control electrically operated valve control, it is ensured that smoke moisture and soot emissions index reach when being sprayed subnormal voltage operation using small subregion
To design requirement.
Described nozzle atomization size controlling prevents atomizing particle size too small at 300~3000 μm, and drop evaporation capacity is excessive,
Causing smoke moisture acute variation influences follow-up equipment to run.
Deduster final stage electric field purge mode of the invention is that subregion spray coupling continues the efficient deashing of moisture film, without anode and cathode
Vibration dust-cleaning system；Anode is using the good composite material anode plate of surface moisture film film forming characteristics；Draw at moisture film rinse-system water source
From filtered water tank, moisture film flushing water supervisor and many anode water distributor firm weldings constitute independent pipe networks, and start and stop are by PLC controls；Spray
Drench rinse-system water source quoted from filtered water tank, every is sprayed supervisor both sides and welds several branch pipes according to fish-bone form, branch pipe with
Supervisor bottom is 300~3000 μm by the densely covered carborundum nozzle of certain sequence, atomizing particle size, and coverage rate is 120~180%；Water
Film flushing liquid flows through composite material electrode plate surface by anode water distribution bottom of the tube apopore, will be deposited on the ash of anode plate surface
Dirt particulate matter flows into foul water tank after rinsing well；After foul water tank liquid is separated through horizontal screw centrifuge, clear liquid pumps into filtered water tank, body refuse
Recycling；Be sprayed pipe network spray flux and start frequency setting principle turn to 0.5 for control moment smoke moisture becomes~
2%.
Deduster final stage electric field structure size, high voltage power supply input etc. are identical with anterior electric field；Final stage electric field top sun
Pole framework is the anode water distributor that array interruption is welded on housing；Composite material anode plate upper and lower part passes through bolt and anode
Framework is connected firmly；It is sprayed supervisor, moisture film to rinse supervisor and be connected with the flange bolt being welded on housing, by pipeline
Connection filtered water tank, controls start and stop, rinses duration and the frequency by PLC；It is sprayed branch pipe and is welded on flushing according to fish bony spur form
On supervisor, formed and be sprayed pipe network, be sprayed pipe network bottom densely covered nozzle and the support by being welded on anode water distributor
Bar is supported；Moisture film flushing liquid flows automatically to foul water tank by being welded on the ash bucket of deduster bottom, and foul water tank liquid is by charging
Screw pump, pipeline feeding horizontal screw centrifuge, the clear liquid isolated pump into filtered water tank and recycle through booster pump, and mud cake is transported out
Factory.
Beneficial effects of the present invention are as follows：
A kind of subregion suitable for high temperature electrostatic deduster proposed by the present invention is sprayed coupling and continues moisture film ashman
Skill and device, by carrying out the upgrading of ash removal method to traditional deduster final stage electric field, i.e., are sprayed coupling using subregion
Close and continue moisture film deashing new technology, effectively prevent former final stage electric field because collecting the vibration dust-cleaning effect of the too high initiation of dust specific resistance
The problems such as really poor, dust secondary fly-up is serious, inverse corona takes place frequently, ensures that high-temperature flue gas flue dust realizes ultralow row from deashing principle
Target is put, the anode under low water consumption amount is synchronously realized and is rinsed thorough, flushing water recycling and solid wastes recycling utilization, had
Wide market application foreground.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are the present invention
Some embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis
These accompanying drawings obtain other accompanying drawings.
Fig. 1 is the front view of electric cleaner；
Fig. 2 is the A-A sectional views that electric cleaner final stage electric field is sprayed system；
Fig. 3 is the B-B sectional views of electric cleaner final stage electric field moisture film rinse-system.
1 it is deduster import end socket in figure, 2 be deduster import deflector, 3 be insulated case, 4 be deduster electric field, 5 is
Cathode suspended beam, 6 be cathode line, 7 be moisture film rinse supervisor, 8 for be sprayed supervisor flange, 9 be moisture film rinse supervisor flange,
10 it is electrically operated valve, 11 be booster pump, 12 be filtered water tank, 13 be storehouse pump, 14 be ash bucket, 15 be foul water tank, 16 is sleeping spiral shell centrifugation
Machine, 17 be porcelain insulator, 18 for be sprayed supervisor, 19 for be sprayed branch pipe, 20 be nozzle, 21 be anode water distributor, 22
For high voltage power supply, 23 be composite material anode plate, 24 be apopore.
Specific embodiment
One of the invention optimal specific embodiment is given with reference to Fig. 1, Fig. 2, Fig. 3.
As shown in Figure 1, 2, 3, hot electrostatic precipitator subregion is sprayed the lasting efficient deashing device of moisture film of coupling by dedusting
The compositions such as device shell, negative electrode, anode, spray irrigation system, moisture film rinse-system, high voltage power supply, insulator, overall connection is closed
System is as follows：
One end of the housing is smoke inlet, and the relative other end is exhanst gas outlet, and described housing bottom is to be provided with
The ash bucket that multiple is communicated with enclosure interior, is divided into multiple deduster electric fields in described housing, and along flow of flue gas
Direction, be sequentially provided with from top to bottom in the housing of final stage electric field spray irrigation device, moisture film flusher and positive plate and
Cathode suspended beam 5, is provided with cathode line 6 vertically downward, and cathode suspended beam and high voltage power supply on described cathode suspended beam
It is connected.
Specifically, being sprayed device by being sprayed supervisor 18, being sprayed branch pipe 19, nozzle 20, filtered water tank 12, dirt
Water tank 15, horizontal screw centrifuge 16, booster pump 11, plc controllers etc. are constituted；Described filtered water tank 12 be arranged on final stage electric field shell
Internal spray irrigation supervisor 18 connects, and spray irrigation supervisor 18 described in each connects with multiple spray irrigation branch pipes 19,
Nozzle 20 is installed on described spray irrigation branch pipe 19.The entrance of described foul water tank 15 and the ash of final stage electric field housing bottom
Bucket 14 is connected, and outlet is connected with a horizontal screw centrifuge 16, and the clear water of the described treatment of horizontal screw centrifuge 16 is increased by one
Press pump sends into filtered water tank 12, and is provided with electrically operated valve 10 with the link circuit mountain of filtered water tank 12 supervisor is sprayed；
Specifically, described moisture film flusher includes that a moisture film being connected with filtered water tank 12 rinses supervisor 7, it is described
Moisture film rinses supervisor 7 and is connected with some anode water distributors 21, and the bottom of described anode water distributor 21 is provided with apopore 24, and
The composite material anode plate 23 relative with apopore is provided with the bottom of anode water distributor 21.
What several anode water distributors 21 were spaced is welded on housing；Described positive plate upper and lower part passes through bolt respectively
It is connected with anode water distributor, anode lower frame.
Deduster final stage electric field purge mode is that subregion spray coupling continues the efficient deashing of moisture film in the present invention, without anode and cathode
Mechanical rapping cleaning dust device；Final stage electric field housing and inner part do preservative treatment；Anode is good using surface moisture film film forming characteristics
Good composite material anode plate 23, including but not limited to flexible fiber, hydrophilic modifying rigid anode plate, hydrophilic coating positive plate
Deng；Negative electrode line style includes but is not limited to jaggies, RS prickle wires, fish-bone line etc.；
Moisture film rinse-system water source rinses supervisor and many firm welding groups of anode water distributor 21 quoted from filtered water tank 12, moisture film
Into independent pipe network, start and stop are by PLC controls；
Quoted from filtered water tank 12, every is sprayed supervisor both sides and welds several according to fish-bone form at spray irrigation system water source
Branch pipe, with supervisor bottom by the densely covered carborundum nozzle of certain sequence, atomizing particle size is 300~3000 μm to branch pipe, and coverage rate is 120
~180%；
Moisture film flushing liquid flows through composite material electrode plate surface by the bottom apopore of anode water distributor 21, will be deposited on sun
The dust particles of polar board surface flow into foul water tank after rinsing well；After the liquid of foul water tank 15 is separated through horizontal screw centrifuge 16, clearly
Liquid pump enters filtered water tank 12, and body refuse is incubated insulating materials recycling as high added value；It is sprayed pipe network spray flux and opens
Dynamic frequency setting principle turns to 0.5~2% for control moment smoke moisture becomes.
Apparatus of the present invention are characterised by that mode, vibration dust-cleaning mode, high voltage power supply are matched somebody with somebody in deduster front portion electric field structure, pole
Input etc. is identical with traditional electric cleaner；Final stage electric field top anode superstructure is the anode cloth that array interruption is welded on housing
Water pipe 21, composite material electrode plate upper and lower part is connected firmly by bolt with chongyang pole water distributor 21 and lower anode framework；Spray
Rinse supervisor 18, moisture film and rinse supervisor and 7 be bolted with the flange being welded on housing, be sprayed branch pipe 19 according to
Fish bony spur form is welded on flushing supervisor and forms several spray irrigation pipe networks, and each is sprayed pipe network by being welded on anode cloth
They sup-port on water pipe 21；Shower water supervisor be connected with filtered water tank 12 by pipeline；Moisture film rinse supervisor 7 by pipeline with
The technique water tank connection of desulfurizing tower institute band；Flushing liquid in last electric field ash bucket is by pipeline self to foul water tank 15, foul water tank
15 liquid pump into filtered water tank 12 and follow by feed worm pump, pipeline feeding horizontal screw centrifuge 16, the clear liquid isolated through booster pump
Ring is used.
The spray coupling of hot electrostatic precipitator subregion continues the efficient deashing technique of moisture film, as follows:
By deduster import end socket 1, removing dust device import deflector 2 enters deduster electric field 4 to high-temperature flue gas after being homogenized
It is interior.Moisture film rinses supervisor 7 and is connected with the firm moisture film flushing supervisor's flange 9 of bolt and case weld；Supervisor 18 is sprayed to use
Bolt is firmly sprayed supervisor's flange 8 with case weld and is connected.High voltage power supply 22 is by the insulation that is placed in insulated case 3
The connection cathode suspended of porcelain vase 17 beam 5, high-tension electricity is applied in cathode line 6, produces corona discharge；It is exhausted big that anterior electric field is trapped
Most dust particles enter the storehouse pump 13 of deduster bottom, and ash silo is entered by Geldart-D particle；Particle lotus in final stage electric field
Electricity simultaneously moves to the surface of composite material anode plate 23 and deposits in the presence of electric field force；Moisture film flushing water is by filtered water tank 12 through increasing
After press pump 11 is delivered to moisture film flushing supervisor 7, into anode water distributor 21, flowed out through the apopore 24 on anode water distributor 21,
Water is uniformly sprawled along composite material anode plate 23 under gravity, and the dust that will be enriched to anode plate surface is rinsed well, is protected
Hinder final stage electric field cleaner Effec-tive Function all the time, occur without back corona phenomenon, realize flue gas flue dust minimum discharge target；Rinse
Liquid enters gravity flow after ash bucket 14 is collected and enters foul water tank 15；Sewage in foul water tank 15 enters horizontal screw centrifuge 16 through feed pipe
Carry out separation of solid and liquid；Part clear liquid is back to moisture film and rinses main pipe 7 through booster pump 11, recycles；Another part clear liquid is through increasing
Press pump 11 enters spray irrigation branch pipe 19 after pumping into spray irrigation supervisor 18, finally by being fixed on be sprayed on branch pipe 19 20
Nozzle sprays, and for intermittently rinsing cathode line and other fixed frames, ensures that enclosure interior part is in clean conditions.Spray punching
Wash pipe network and open the frequency and regard smoke moisture amplitude of variation and export flue dust index and change, controlled by PLC control electrically operated valves 10, protect
Smoke moisture and soot emissions index reach design requirement when card is sprayed subnormal voltage operation using small subregion.
Implementing operating process is：
Initial coal-fired flue-gas carry 15~40g/m of smoke content3, temperature is 110~500 DEG C, with 0.8~1.2m/s speed
By the preceding level Four electric field of electric cleaner, in the presence of electric field force, particle moves to anode plate surface and forms dust layer, by between
Every the mechanical shaking device that the set time opens, shaken from anode plate surface and dropped down onto in the pump of storehouse, through Geldart-D particle to ash silo；Into end
The dust content of level electric field is between 50~200mg/m3Between, dust collector pole surface is moved in the presence of electric field force, quickly
By the absorption of composite anode plate surface uniform water film, electric charge release is completely and rapid, thoroughly avoids former electrostatic field because particle is than electricity
The larger inverse corona problem that slow initiation was discharged in metal polar plate surface charge of resistance；The particle of anode plate surface is deposited on surface
The flushing for continuing moisture film is flowed down into ash bucket, keeps positive plate surface cleaning, and former electrostatic field is solved from root because particle is than electricity
The big mechanical vibrator dynamics that increases of resistance high viscosity causes the serious defect of reentrainment of dust；Moisture film rinse-system water source quoted from filtered water tank,
Cleaning liquid flow by gravity delivers to horizontal screw centrifuge and carries out high speed separation of solid and liquid to foul water tank, through feed pipe, and solid content is less than
0.05% clear water enters filtered water tank, is pumped to spray irrigation supervisor by supercharging and moisture film rinses supervisor and recycles, and body refuse is made
It is by recycling rich in glass microballoon class thermal insulating high added value material；Smoke evaporative water is by power plant process water moisturizing
To filtered water tank；The corrosion-resistant carbon safe and reliable to operation of heat resistant and wear resistant is selected in spray irrigation system water source quoted from filtered water tank, nozzle
SiClx nozzle, interval flushing is carried out to the part such as negative electrode and anode construction beam, ensures that housing and inner part are cleaned all the time；Nozzle mist
Change size controlling at 300~3000 μm, prevent atomizing particle size too small, drop evaporation capacity is excessive, causes smoke moisture acute variation
Influence follow-up equipment operation；It is sprayed pipe network spray flux and starts frequency setting principle and is turned to for control moment smoke moisture becomes
0.5~2%, by PLC controls, while smoke moisture and soot emissions refer to when ensureing to be sprayed subnormal voltage operation using small subregion
Mark reaches design requirement.
Although above-mentioned be described with reference to accompanying drawing to specific embodiment of the invention, not to present invention protection model
The limitation enclosed, one of ordinary skill in the art should be understood that on the basis of technical scheme those skilled in the art are not
Need the various modifications made by paying creative work or deformation still within protection scope of the present invention.
Claims (3)
1. a kind of hot electrostatic precipitator subregion spray coupling moisture film rinses deashing device, including a housing, the one of the housing
It is smoke inlet to hold, and the relative other end is exhanst gas outlet, and deflector is provided with the smoke inlet, and described housing bottom is
Multiple ash buckets communicated with enclosure interior are provided with, multiple deduster electric fields are divided into described housing, it is characterised in that：Edge
The direction of flow of flue gas, spray irrigation device, cathode suspended beam, water is sequentially provided with from top to bottom in the housing of final stage electric field
Film flusher and positive plate, are provided with cathode line vertically downward on described cathode suspended beam, and cathode suspended beam with
High voltage power supply is connected；Described spray irrigation device includes that foul water tank, a filtered water tank and the moisture film being connected with filtered water tank are rinsed
Supervisor, the entrance of described foul water tank is connected with the ash bucket of final stage electric field housing bottom, and outlet is connected with a centrifuge, institute
The clear water of the centrifuge treatment stated is fed again into filtered water tank by a pump；Described filtered water tank be arranged on final stage electric field housing
Interior supervisor's connection, and supervisor described in each connected with multiple branch pipes, and nozzle is provided with described branch pipe；Described moisture film
Flusher includes that a moisture film being connected with filtered water tank rinses supervisor, and described moisture film rinses supervisor and some anode water distributors
It is connected, described anode water distributor is provided with apopore, and is provided with the sun relative with apopore in the bottom of anode water distributor
Pole plate；Described final stage electric field housing and inner part do preservative treatment；Described negative electrode line style includes but is not limited to sawtooth
Line, RS prickle wires or fish-bone line；What several anode water distributors were spaced is welded on housing；Described positive plate upper and lower part
It is connected with anode water distributor, anode lower frame by bolt respectively；Described positive plate is using surface moisture film film forming characteristics
Composite material anode plate, including but not limited to flexible fiber, hydrophilic modifying rigid anode plate and hydrophilic coating positive plate；By sun
The lasting moisture film of polar board surface wash away will be deposited on dust collecting pole plate surface high resistivity dust layer cleaning it is thorough, while coupling
Periodically small subregion is sprayed the deposition dust that technique removal is attached to discharge electrode and anode beams structural member surface.
2. the deashing technique of deashing device as claimed in claim 1, it is characterised in that as follows：
The initial coal-fired flue-gas of step 1 carry flue dust and enter conventional electric precipitation electric field, particulate matter quilt of the particle diameter more than 5 μm in flue gas
Capture；
Step 2 into final stage electric field containing fine particle flue gas at large, transport in the presence of electric field force by fine particle
Composite anode plate surface is moved, is quickly adsorbed by composite anode plate surface uniform water film；
After step 3 moisture film flushing water is delivered to moisture film flushing supervisor by filtered water tank through booster pump, into anode tube, through anode water distribution
Apopore outflow on pipe, water is uniformly sprawled along composite material anode plate under gravity, will be enriched to anode plate surface
Dust is rinsed well；
Step 4 flushing liquor enters gravity flow after ash bucket is collected and enters foul water tank；Sewage in foul water tank enters sleeping spiral shell through feed pipe
Centrifuge carries out separation of solid and liquid；Part clear liquid is back to moisture film and rinses main pipe through booster pump, recycles；Another part clear liquid is passed through
Booster pump enters spray irrigation branch pipe after pumping into spray irrigation supervisor, is finally sprayed by being fixed on the nozzle being sprayed on branch pipe
Go out, for intermittently rinsing cathode line and other fixed frames.
3. the deashing technique of deashing device as claimed in claim 2, it is characterised in that described spray irrigation pipe network opens frequency
It is secondary to change regarding smoke moisture amplitude of variation and outlet flue dust index, controlled by PLC control electrically operated valves.
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| CN105921279A (en) * | 2016-05-16 | 2016-09-07 | 山东大学 | Integrated cathode and anode suspension supporting water film dust removal roof electric precipitation device and system |
| CN107362648B (en) * | 2017-09-06 | 2023-06-02 | 山东大学 | Industrial air purification system |
| CN108480043B (en) * | 2018-03-09 | 2019-10-22 | 黑龙江省建筑安装集团有限公司 | It is a kind of for handling the electric smoke precipitation equipment of dust in boiler smoke |
| CN108435426A (en) * | 2018-03-16 | 2018-08-24 | 浙江佳环电子有限公司 | The wet electrical dust precipitator of tar removing |
| CN109821656B (en) * | 2019-04-10 | 2024-03-08 | 沈阳慧之源科技有限公司 | Self-cleaning electrostatic fume purifier |
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