A kind of wet cottrell
This utility model relates to the flue gas purifying equipment of field of Environment Protection, is specifically related to a kind of wet cottrell.
Wet cottrell is a kind of for processing the cleaning equipment containing trace dust and microparticle, is mainly used to remove
Containing harmful substances such as the dust in humid gas, acid mist, drop, aerosol, PM2.5, have that efficiency of dust collection is high, the pressure loss is little,
Behaviour do simple, energy consumption is low, movement-less part, without reentrainment of dust, be operable with below flue gas dew point temperature, can control with other flue gas
Reason equipment combines, the advantage such as versatile and flexible, is one of the ideal equipment of industrial smoke pollution control, in each industrial processes
Deacidify, except mist has extensive application.In particular with the deterioration increasingly of China's atmosphere quality, Environmental Protection in China situation is day by day
Severe and national environmental standard day by day strict, nearly 2 years, wet static dedusting technology was at China's coal-fired plant boiler flue gas
With wet desulfurizing process cooperative disposal in governing system, efficiently removing a large amount of SO3 blue smokes acid produced because of wet desulphurisation system
The application of the aspects such as the heavy metal in mist, gypsum rain and flue gas is in multiplication trend.
The ultimate principle of wet cottrell is similar with dry electrostatic cleaner with work process, is divided into charged, receipts
Collection and deashing three phases, different is only its purge mode difference.It is different from the side of dry electrostatic cleaner vibration dust-cleaning
Formula, wet cottrell uses the mode that current rinse, makes pollutant remove along with the flowing of cleanout fluid.
At present, domestic horizontal wet electrostatic precipitator main flow pole plate form mostly is slab construction, maximum the lacking of this pole plate
Fall into is the rinse water easily bifurcated because of action of gravity impact, it is difficult to form uniform moisture film at polar board surface, especially pole plate with
Height to increase, occur that moisture film is uneven, cleaning performance is not good enough.For the problems referred to above, it is necessary to propose a kind of new wet electrostatic
The technical scheme of cleaner unit.
Utility model content
The purpose of this utility model is to provide a kind of novel wet cottrell, and this wet cottrell need not spray
Mouth discharges into row spray deashing from top to anode, can guarantee that again that on positive plate, moisture film is uniform simultaneously, improves flush efficiency, and clean
Water is without electric field region, it is ensured that electric field is stable, it is to avoid the taking out of of drop, thus improves dust-collecting efficiency.
For achieving the above object, this utility model adopts the following technical scheme that
A kind of wet cottrell, it by negative electrode spray water tank, anode spray water tank, high voltage power supply A, high voltage power supply B,
Anode cleans pipe, penthouse, cathode hanger, cathode top shower nozzle A, cathode top shower nozzle B, cathode top framework A, cathode top frame
Frame B, import uniform board, outlet uniform board, import loudspeaker, outlet loudspeaker, anode row, cathode line A, cathode line B, under(-)chassis A,
Under(-)chassis B, shell of dust remover, base plate blow-off pipe, anode spray blowdown apparatus and hot air apparatus composition, it is characterised in that anode
The rinse water of row is cleaned pipe by anode and is arrived shower, and rinse water arrives positive plate table after the outer surface of shower is uniform
Face, forms uniform water film, is provided with anode spray blowdown apparatus, subregion before and after wet cottrell employing in the end of shower
Power supply, and front and back subregion uses the cathode line of different discharge performance.
Described anode row be made up of entablature, lid, shower and positive plate, and anode rinse water is cleaned pipe by anode and arrived
Reaching shower, the top of shower is evenly equipped with spray apertures, and rinse water arrives the lower surface of lid, Jing Guo by spray apertures injection
Current-sharing falls back to the outer surface of shower, and the outer surface of shower keeps certain roughness, and the cross section of lid can be V
Shape, circular arc, polygon etc..
Described positive plate is double-deck tympanites plate structure, is made up by welding of two block plates, " recessed in Double-layer symmetrical after molding
Convex " drum balloon-shaped structure, its peripheral sealing welds, and surface solder joint is staggered in center in rows and columns, is uniformly distributed.
Described anode spray blowdown apparatus structure be by shower extend be connected to outside cleaner unit, in short tube end equipped with
Threeway, is provided with pipe plug in threeway end, in threeway bottom equipped with valve, is arranged right below water receiving tank at valve.
Described wet cottrell use before and after switched-mode power supply, during proparea negative electrode spray, back zone do not stops power supply, continues
Work, during back zone negative electrode spray, proparea do not stops power supply, works on, it is ensured that cleaner unit continuous and steady operation, and front and back district adopts
With the polar curve of different discharge performances, proparea uses the long tooth prickle wire that discharge performance is strong, and back zone uses the short tooth that electric field intensity is high
The typically saturated dampness of flue gas that described wet cottrell processes, it is easy at the insulator of cathode hanger device
Upper condensation, causes electric field short circuit, and insulator damages, and cleaner unit cannot be properly functioning, and hot air apparatus send to negative electrode swing pipe device continuously
Hot blast, it is ensured that the insulator of cathode hanger device will not condense.
The utility model has the advantages that owing to wet cottrell need not discharge into anode from anode top with nozzle
Row spray deashing, can guarantee that again that on positive plate, moisture film is uniform, is arrived after the outer surface of shower is uniform by rinse water simultaneously
Positive plate both side surface, forms the uniform fold of moisture film, improves cleaning performance.Being extended by shower is connected to outside cleaner unit, logical
Cross blowoff valve to carry out periodical blowdown and solve the blockage problem of spray apertures.Switched-mode power supply before and after employing, it is ensured that cleaner unit is continuous
Electrically continuous stable operation, simultaneously before and after subregion use the cathode line of different discharge performance, thus improve efficiency of dust collection.
Below in conjunction with the accompanying drawings this utility model is described further.
Accompanying drawing explanation
Fig. 1 is wet cottrell appearance schematic diagram
Fig. 2 is that anode arranges top sectional view
Fig. 3 is that anode arranges shower blowdown schematic diagram
In figure: 1, negative electrode spray water tank；2, anode cleans water tank；3, high voltage power supply A；4, high voltage power supply B；5, anode cleans
Pipe；6, penthouse；7, cathode hanger；8, cathode top shower nozzle A；9, cathode top shower nozzle B；10, cathode top framework A；11, negative electrode
Top frame B；12, import uniform board；13, outlet uniform board；14, import loudspeaker；15, outlet loudspeaker；16, anode row；16.1、
Entablature；16.2, lid；16.3, shower；16.4 positive plates；17, cathode line A；18, cathode line B；19, under(-)chassis A；
20, under(-)chassis B；21, shell of dust remover；22, base plate blow-off pipe；23, anode spray blowdown apparatus；23.1, short tube；23.2、
Threeway；23.3, pipe plug；23.4, valve；23.5, water receiving tank；24, hot air apparatus.
Specific implementation method
As shown in Figure 1, Figure 2 and Figure 3, clean water tank 2 at cleaner unit penthouse 6 top layout negative electrode spray water tank 1, anode,
Water tank controls certain liquid level, keeps that anode row 16 flushing is had stable pressure and flow, the rinse water of anode row 16
Cleaning pipe 5 by anode and arrive shower 16.3, the top of shower 16.3 has spray apertures uniformly, and rinse water is by spray
Hole injection arrives the lower surface of lid 16.2, falls back to the outer surface of shower 16.3, shower 16.3 through first time current-sharing
Outer surface keep certain roughness, rinse water arrives positive plate 16.4 table after the outer surface of shower 16.3 is the most uniform
Face, forms uniform water film.
Positive plate 16.4 uses double-deck tympanites plate structure, is made up by welding of two block plates, in Double-layer symmetrical after molding
" concavo-convex " drum balloon-shaped structure, its peripheral sealing welds, and surface solder joint is staggered in center in rows and columns, is uniformly distributed.Ensure anode
Plate 16.4 cleans moisture film and covers uniformly, improves cleaning performance, saves and take up an area, investment reduction.
Spray apertures is located at the top of shower 16.3, can effectively prevent foreign material blocking spray apertures in water, for stopping
The caecum situation of shower 16.3, is connected to shower 16.3 prolongation cleaner unit parallel connection outside and connects an anode spray blowdown apparatus
23, it is included in short tube 23.1 end equipped with threeway 23.2, in threeway termination equipped with pipe plug 23.3, in threeway 23.2 bottom equipped with
Valve 23.4, is arranged right below water receiving tank 23.5 at valve 23.4, and combinations thereof can realize periodical blowdown.At shell of dust remover
The bottom of 21 is provided with base plate blow-off pipe 22.
Import uniform board 12 and outlet uniform board 13 it is respectively equipped with in the import loudspeaker 14 and outlet loudspeaker 15 of cleaner unit,
The air-flow that can make entrance cleaner unit exhaust gases passes is uniformly distributed.
There are high voltage power supply A3 and high voltage power supply B4, switched-mode power supply before and after negative electrode employing in cleaner unit penthouse 6 top layout, make
With two high voltage supply systems, wherein: high voltage power supply A3, cathode hanger 7, cathode top framework A10, cathode line A17, bottom frame
Frame A19 forms the first power supply zone；High voltage power supply B4, cathode hanger 7, cathode top framework B11, cathode line B18, under(-)chassis
B20 forms the second power supply zone.Front and back power supply zone uses the polar curve of different discharge performance, and proparea uses the length that discharge performance is strong
Tooth prickle wire, back zone uses short tooth prickle wire.
The cathod system of the first power supply zone is carried out spraying deashing by cathode top shower nozzle A8, and cathode top shower nozzle A8 works
Time, the electric power system of the first power supply zone quits work, and the electric power system of the second power supply zone works on.
The cathod system of the second power supply zone is carried out spraying deashing by cathode top shower nozzle B9, and cathode top shower nozzle B9 works
Time, the electric power system of the second power supply zone quits work, and the electric power system of the first power supply zone works on.
The flue gas processed due to wet cottrell is saturated with moisture, it is easy on the insulator of cathode hanger device 7
Condensation, causes electric field short circuit, and insulator damages, and cleaner unit cannot be properly functioning.Hot air apparatus 24 send to negative electrode swing pipe device 7 continuously
Hot blast, it is ensured that the insulator of cathode hanger device 7 will not condense.