CN205628290U - Wet -type electrostatic precipitator with coalescence function in advance - Google Patents
Wet -type electrostatic precipitator with coalescence function in advance Download PDFInfo
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- CN205628290U CN205628290U CN201620403043.9U CN201620403043U CN205628290U CN 205628290 U CN205628290 U CN 205628290U CN 201620403043 U CN201620403043 U CN 201620403043U CN 205628290 U CN205628290 U CN 205628290U
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- coalescence
- wet
- dust precipitator
- electrical dust
- heat exchanger
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- 238000004581 coalescence Methods 0.000 title claims abstract description 58
- 239000012717 electrostatic precipitator Substances 0.000 title abstract 10
- 239000000428 dust Substances 0.000 claims abstract description 64
- 238000010521 absorption reaction Methods 0.000 claims abstract description 9
- 238000006477 desulfuration reaction Methods 0.000 claims abstract description 7
- 239000012716 precipitator Substances 0.000 claims description 42
- 239000000463 material Substances 0.000 claims description 8
- 230000000712 assembly Effects 0.000 claims description 7
- 238000000429 assembly Methods 0.000 claims description 7
- 238000009413 insulation Methods 0.000 claims description 6
- 229910052573 porcelain Inorganic materials 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 238000005452 bending Methods 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims description 3
- 239000011152 fibreglass Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims description 3
- 229920002554 vinyl polymer Polymers 0.000 claims description 3
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 2
- 239000000758 substrate Substances 0.000 claims 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 22
- 239000003546 flue gas Substances 0.000 abstract description 21
- 239000002245 particle Substances 0.000 abstract description 8
- 230000023556 desulfurization Effects 0.000 abstract 2
- 230000007704 transition Effects 0.000 abstract 1
- 238000005406 washing Methods 0.000 abstract 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 10
- 230000005684 electric field Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 239000000843 powder Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000009833 condensation Methods 0.000 description 4
- 230000005494 condensation Effects 0.000 description 4
- 239000010419 fine particle Substances 0.000 description 4
- 239000008187 granular material Substances 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000356 contaminant Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 230000002262 irrigation Effects 0.000 description 2
- 238000003973 irrigation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 239000000443 aerosol Substances 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000005686 electrostatic field Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003500 flue dust Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 230000003020 moisturizing effect Effects 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
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- Electrostatic Separation (AREA)
Abstract
The utility model discloses lower not enough to superfine dust particle's dust collection efficiency to current wet -type electrostatic precipitator, it has the wet -type electrostatic precipitator of coalescence function in advance to provide one kind. This wet -type electrostatic precipitator arranges at desulfurization absorption tower top, mainly includes wet -type electrostatic precipitator and coalescence heat exchanger, and wet -type electrostatic precipitator sets up in coalescence heat exchanger top, and wet -type electrostatic precipitator is mainly hung by negative pole line, cathode frame, negative pole and constitutes with the positive pole subassembly, and the coalescence heat exchanger is installed between export of absorption tower defroster and wet -type electrostatic precipitator, and the top of wet -type electrostatic precipitator and coalescence heat exchanger is equipped with washing unit respectively. Pending flue gas in proper order after the room of flow equalizing, wet -type electrostatic precipitator and dust remover exhaust pass are condensed in desulfurization absorption tower, absorption tower exhaust pass, phase transition, is discharged by the chimney from bottom to top.
Description
Technical field
This utility model relates to a kind of laggard to the fine contaminant particle coalescence in advance below PM10 micron in wet flue gas
The technique of the wet-esp of high voltage electric field, belongs to flue gas advanced purification technology field.
Background technology
The fine particle specific surface area of less than 10 microns is big, to the suction of poisonous organic pollution, heavy metal etc. harmful substance
Attached property is strong.These particulate matters, because particle diameter is less, suspends in an atmosphere, are difficult to diffusion, to health and atmosphere quality
Impact the biggest.
Combustion of industrial boiler emission source is the main source of below PM10 fine particle.Along with new " atmosphere pollution
Discharge standard " promulgation of (GB13271-2014), coal-burning boiler smoke dust discharge concentration is by original 50mg/m3It is reduced to 30mg/
m3, key area is reduced to 20mg/m3.In the face of new requirement higher dust exhausting concentration limit value, original cleaner of coal-burning boiler
It is difficult to reach standard.
In current various novel dust removing technology, wet-esp is to ensure that the effective technology means of emission compliance.But,
Some fine particle electric field forces are difficult to overcome stoke resistance, in high voltage electric field interval enrichment to the pole plate of anode region,
Reduce the efficiency of dust collection of wet electrical dust precipitator.The wettest except efficiency only 60-80%, the space that tool has greatly improved.
Summary of the invention
For the deficiency that existing wet electrical dust precipitator is relatively low to the efficiency of dust collection of ultrafine dust granule, this utility model carries
For a kind of wet electrical dust precipitator having pre-coalescence function.
This utility model is achieved through the following technical solutions:
A kind of wet electrical dust precipitator with pre-coalescence function, this wet electrical dust precipitator is arranged in desulfuration absorbing tower top,
Mainly including wet electrical dust precipitator and coalescence heat exchanger, wet electrical dust precipitator is arranged at above coalescence heat exchanger, wet-esp
Device is mainly made up of cathode line, cathode frame, cathode hanger and anode assemblies, and coalescence heat exchanger is arranged on absorption tower demisting device and goes out
Between mouth and wet electrical dust precipitator, and the top of wet electrical dust precipitator and coalescence heat exchanger is respectively equipped with flusher.
During work, pending flue gas sequentially passes through desulfuration absorbing tower, coalescence heat exchanger, wet electrical dust precipitator from bottom to top,
Discharged by chimney.
Further design of the present utility model is:
Coalescence heat exchanger uses the hosepipe binding structure of simmering and bending, and the entrance and exit of hosepipe bundle is connected to connection
Case, header is connected by female pipe with open tank.
The material of hosepipe bundle and header is TA2, and the two is fixed by pipeline, and TA2 material contributes to strengthening surface heat exchanging,
It is also adapted to wet except the flue gas condition of severe corrosive simultaneously.
Coalescence heat exchanger uses the dislocation of upper and lower two-layer hosepipe bundle to arrange, flue gas flow-disturbing is disturbed when skimming over tube wall, increases
Strong heat transfer effect.Owing to there is temperature difference between flue gas and tube wall, the water condensation in flue gas adheres to fine dust, fine
Dust reforms into the drop of band nucleus.
The specification of the tube bank of Serpentis type is φ 8～12 × 1(wall thickness) mm, in layer, tube pitch is 30～40mm, and interlamellar spacing is 40
～60mm.
During work, the dust of less than 10 microns be condensed drop cladding after particle diameter rise to more than 20 microns, compare resistance
Drop to 1010Ω .cm, the best effort that the dust physical characteristic after coalescence is in wet electrical dust precipitator is interval.
The anode of wet electrical dust precipitator anode assemblies be regular hexagon tube bank, hexagonal inscribed circle diameter be 300～
400mm, a length of 3～5m.Basic material is vinyl fiberglass, the carbon cloth of inner surface lining conduction.
The cathode line of wet-esp uses efficient six pin hollow wires, four insulation that cathode frame is hung by top side
Porcelain pull bar is fixed with supporting surface, and the insulating segment of insulation porcelain pull bar is with inner heating device, it is ensured that insulation resistance is more than 1G Ω.
This utility model has the advantage that compared to existing technology
(1) this utility model increases coalescence heat exchanger at wet electrical dust precipitator entrance, and flue gas carries out heat exchange cooling, cold
The droplet that condensation goes out sweeps along the solidifying long greatly bulky grain droplet of fine dust granule, charged in high-voltage electrostatic field of bulky grain droplet
Amount increases, it is easier to points to along electric lines of force and migrates, thus improves the dedusting efficiency except mist of wet electrical dust precipitator, reduces fine
Dust escapement ratio.
(2) flue gas concentration of liquid drops after coalescence heat exchanger of the present utility model increases, and can improve the two of wet-esp
Secondary magnitude of voltage 10-15%, contributes to wet except efficiency raising 10%.
(3) coalescence heat exchanger of the present utility model is made up of the snakelike tube bank of the TA2 being alternately arranged, TA2 material heat conductivity
Can be better than nonmetal anticorrosive material, the heat exchange area of equal heat exchange amount to decline 30～50%, and the volume of whole device is wanted relatively
Little.The alternately tube bank of Heterogeneous Permutation composition so that flue gas flow equalizing disperses, and flue gas is at coalescence heat exchanger upper and lower layer Heterogeneous Permutation
Hosepipe bundle shuttles back and forth and detours, and coordinates being passed through of outside cooling medium, it is possible to accurately controls the saturated coalescence degree of saturated flue gas, makes
Flue gas cool-down 1～3 DEG C.
(4) wet electrical dust precipitator cathode structure of the present utility model is the birdcage model of 4 suspentions, compares traditional the moon
Pole weight reduction more than 30%, structural form is the lightest and the handiest.Negative electrode upper frame is connected with insulated hanging pole, and rigid tubular polar curve is made
For perpendicular muscle, bottom suspension locating frame is base.When flue gas flow rate 4～6 meter per second, the secondary numerical stability of electric field.
(5) spray irrigation pipeline is set, periodically to wet type above coalescence heat exchanger of the present utility model and wet electrical dust precipitator
The tube bank of electric dust-collector anode and coalescence heat exchanger is rinsed, flushing water fall into lower absorbent tower can directly as moisturizing,
Do not increase emission newly.
(6) this utility model can efficient removal fine particle and aerosol, solve flue dust, gypsum rain, gas molten comprehensively
Glue, SO3Etc. various contaminant problems, especially in Industrial Boiler and the petrochemical industry of middle and small scale exhaust gas volumn.
Accompanying drawing explanation
Fig. 1 is the wet electrical dust precipitator facade structures schematic diagram with pre-coalescence.
Fig. 2 is the wet electrical dust precipitator site plan of coalescence heat exchanger.
Fig. 3 is the wet electrical dust precipitator site plan of coalescence heat exchanger.
Fig. 4 is coalescence heat exchanger tube array schematic diagram.
Fig. 5 is coalescence heat exchanger dust-cleaning principle schematic diagram.
Labelling in figure:
1, coalescence heat exchanger；2, negative electrode lower frame；3, cathode line；4, negative electrode upper frame；5, cathode hanger；6, spray
Drench flush pipe；7, anode assemblies；8, outer tank.
Detailed description of the invention
Embodiment one:
As shown in Fig. 1, this utility model has the wet electrical dust precipitator of pre-coalescence function and is arranged in desulfuration absorbing tower top
(only providing absorption tower top structure in figure), mainly includes wet electrical dust precipitator, coalescence heat exchanger 1, outer tank 8 and spray dress
Put.Wet electrical dust precipitator is arranged at above coalescence heat exchanger 1, wet electrical dust precipitator mainly by negative electrode lower frame 2, cathode line 3,
Negative electrode upper frame 4, cathode hanger 5 and anode assemblies 7 form, and coalescence heat exchanger 1 is arranged on absorption tower demisting device and exports with wet
Between formula electric cleaner, and the top of wet electrical dust precipitator and coalescence heat exchanger is respectively equipped with flusher, and flusher includes
Flooding nozzle and spray irrigation pipe 6.Outer tank 8 is connected with the header of coalescence heat exchanger.
As shown in Figure 2, Figure 3, Figure 4, coalescence heat exchanger 1 uses the hosepipe bundle of simmering and bending, the entrance of hosepipe bundle and
Outlet is connected to header, and header is connected by female pipe with outer tank 8.In figure, coalescence heat exchanger 1 uses upper and lower two-layer Serpentis
Type tube bank dislocation arrangement mode.Fig. 4 Wave line represents air current flow, and arrow table asks air-flow from the bottom to top.
The specification of hosepipe bundle is φ 8～12 × 1 mm, and in layer, tube pitch is 30～40mm, and interlamellar spacing is 40～60mm.
The anode of anode assemblies is regular hexagon tube bank, and hexagonal inscribed circle diameter is 300～400mm, a length of 3～5m.Anode
Basic material is vinyl fiberglass, the carbon cloth of inner surface lining conduction.The cathode line of wet-esp uses efficient six
Pin hollow wire, four insulation porcelain pull bars that cathode frame is hung by top side fix with supporting surface, the insulating segment of insulation porcelain pull bar
With inner heating device.
This utility model wet electrical dust precipitator is arranged in desulfuration absorbing tower top, after this utility model device in flue gas
Remaining below PM10 fine dust and droplet are removed.
Pulverized-coal fired boiler discharge flue gas after denitration, dedusting and wet desulphurization remaining pollutant with droplet, PM10
The Gypsum Fibrosum escaped in following fine dust and absorption tower is main.These pollutant levels are low, granule thin, harm is big.Flue gas is direct
Entering wet electrical dust precipitator, efficiency of dust collection can only have 50～70%, of the present utility model have pre-coalescence wet type electricity if used and removes
Dirt device, flue gas first passes through the coalescence heat exchanger of TA2 snakelike tube bank composition, and supersaturation water condensation in flue gas, by fine solid particle
Wherein (principle is as shown in Figure 5), the particle diameter of droplet is more than 20 microns, and carrying capacity is also far longer than single dust for parcel
Grain.Droplets of these parcel dust enter moment after high voltage electric field and charged are adsorbed onto on pole plate, it is achieved efficiently trap.This practicality is new
The wet electrical dust precipitator of type is at entrance concentration 50mg/Nm3Time, outlet dust concentration can be less than 5mg/Nm3。
Embodiment two:
The aluminium oxide catalyst that oil refining industry uses is to use high-temperature roasting technique manufacture, has few in manufacture process
The alumina powder of amount is escaped, alumina powder can not charged and particle diameter less than 10 microns, flue gas is directly entered wet type electricity and removes
Dirt device, owing to aluminium oxide self-characteristic limits, efficiency of dust collection is only capable of reaching 30～50%.But flue gas has through this utility model
After the wet electrical dust precipitator of coalescence heat exchanger, cigarette temperature declines 1～3 DEG C, and gas phase water condensation becomes droplet, the oxygen of porosity characteristic
Changing aluminium powder coalescence therewith, not only particle diameter increases to more than 40 microns, and charging performance is because of the condensed water of the parcel on surface
Improve decades of times.Alumina powder granule after coalescence is trapped rapidly after entering electric field, and the alumina powder of trapping can continue
Continue and melt down utilization, obtain environmental protection and economical effects.
Claims (8)
1. having a wet electrical dust precipitator for pre-coalescence function, it is arranged in desulfuration absorbing tower top, it is characterised in that: main
Including wet electrical dust precipitator and coalescence heat exchanger, wet electrical dust precipitator is arranged at above coalescence heat exchanger, wet electrical dust precipitator master
To be made up of cathode line, cathode frame, cathode hanger and anode assemblies, coalescence heat exchanger be arranged on absorption tower demisting device outlet with
Between wet electrical dust precipitator, and the top of wet electrical dust precipitator and coalescence heat exchanger is respectively equipped with flusher.
The most according to claim 1, there is the wet electrical dust precipitator of pre-coalescence function, it is characterised in that: coalescence heat exchanger uses
The hosepipe binding structure of simmering and bending, the entrance and exit of hosepipe bundle is connected to header, and header and open tank are by mother
Pipe connects.
The most according to claim 2, there is the wet electrical dust precipitator of pre-coalescence function, it is characterised in that: coalescence heat exchanger uses
Upper and lower two-layer hosepipe bundle dislocation arrangement mode.
4. there is according to Claims 2 or 3 the wet electrical dust precipitator of pre-coalescence function, it is characterised in that: hosepipe bundle and
Header uses TA2 material, and the two connects by pipeline is fixing.
The most according to claim 4, there is the wet electrical dust precipitator of pre-coalescence function, it is characterised in that: the specification of hosepipe bundle
For φ 8～12 × 1 mm, in layer, tube pitch is 30～40mm, and interlamellar spacing is 40～60mm.
6. there is according to claim 1,2 or 3 wet electrical dust precipitator of pre-coalescence function, it is characterised in that: anode assemblies
Anode be regular hexagon tube bank, hexagonal inscribed circle diameter is 300～400mm, a length of 3～5m.
The most according to claim 6, there is the wet electrical dust precipitator of pre-coalescence function, it is characterised in that: anode substrate material is
Vinyl fiberglass, the carbon cloth of inner surface lining conduction.
The most according to claim 6, there is the wet electrical dust precipitator of pre-coalescence function, it is characterised in that: the moon of wet-esp
Polar curve uses efficient six pin hollow wires, and four insulation porcelain pull bars that cathode frame is hung by top side are fixed with supporting surface, absolutely
The insulating segment of edge porcelain pull bar is with inner heating device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620403043.9U CN205628290U (en) | 2016-05-06 | 2016-05-06 | Wet -type electrostatic precipitator with coalescence function in advance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620403043.9U CN205628290U (en) | 2016-05-06 | 2016-05-06 | Wet -type electrostatic precipitator with coalescence function in advance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205628290U true CN205628290U (en) | 2016-10-12 |
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ID=57049681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620403043.9U Active CN205628290U (en) | 2016-05-06 | 2016-05-06 | Wet -type electrostatic precipitator with coalescence function in advance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205628290U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105817325A (en) * | 2016-05-06 | 2016-08-03 | 江苏釜鼎能源科技有限公司 | Wet type electric dust collector with pre-coagulation function |
| CN107042158A (en) * | 2016-12-20 | 2017-08-15 | 天津华迈环保设备有限公司 | A kind of wet cottrell with function of recovering waste heat |
-
2016
- 2016-05-06 CN CN201620403043.9U patent/CN205628290U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105817325A (en) * | 2016-05-06 | 2016-08-03 | 江苏釜鼎能源科技有限公司 | Wet type electric dust collector with pre-coagulation function |
| CN107042158A (en) * | 2016-12-20 | 2017-08-15 | 天津华迈环保设备有限公司 | A kind of wet cottrell with function of recovering waste heat |
| CN107042158B (en) * | 2016-12-20 | 2018-07-10 | 天津华迈环保设备有限公司 | A kind of wet cottrell with function of recovering waste heat |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |