CN203075796U - Skewed gas flow type electrostatic fabric filter - Google Patents
Skewed gas flow type electrostatic fabric filter Download PDFInfo
- Publication number
- CN203075796U CN203075796U CN 201220433639 CN201220433639U CN203075796U CN 203075796 U CN203075796 U CN 203075796U CN 201220433639 CN201220433639 CN 201220433639 CN 201220433639 U CN201220433639 U CN 201220433639U CN 203075796 U CN203075796 U CN 203075796U
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- district
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- plate
- electric
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- 239000004744 fabric Substances 0.000 title claims abstract description 40
- 239000000428 dust Substances 0.000 claims abstract description 117
- 238000001556 precipitation Methods 0.000 claims description 52
- 230000005611 electricity Effects 0.000 claims description 22
- 239000001301 oxygen Substances 0.000 claims description 6
- MYMOFIZGZYHOMD-UHFFFAOYSA-N oxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims description 6
- 229910052760 oxygen Inorganic materials 0.000 claims description 6
- 238000009825 accumulation Methods 0.000 claims description 4
- 238000010276 construction Methods 0.000 claims description 2
- 239000011148 porous material Substances 0.000 claims description 2
- 238000005367 electrostatic precipitation Methods 0.000 abstract description 6
- 238000005192 partition Methods 0.000 abstract 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 15
- 239000003546 flue gas Substances 0.000 description 15
- 239000002245 particle Substances 0.000 description 10
- 239000007789 gas Substances 0.000 description 9
- 230000005684 electric field Effects 0.000 description 8
- 238000010410 dusting Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000002131 composite material Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000008187 granular material Substances 0.000 description 4
- 239000002956 ash Substances 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 238000007667 floating Methods 0.000 description 3
- 210000002345 respiratory system Anatomy 0.000 description 3
- 239000000779 smoke Substances 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 235000012459 muffins Nutrition 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 206010062717 Increased upper airway secretion Diseases 0.000 description 1
- 206010022114 Injury Diseases 0.000 description 1
- 210000004072 Lung Anatomy 0.000 description 1
- 210000003097 Mucus Anatomy 0.000 description 1
- 210000003135 Vibrissae Anatomy 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000002493 climbing Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 230000001771 impaired Effects 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000000505 pernicious Effects 0.000 description 1
- 230000001737 promoting Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Abstract
The utility model discloses a skewed gas flow type electrostatic fabric filter. The skewed gas flow type electrostatic fabric filter comprises a gas flow distribution area, an electrostatic precipitation area and a cloth bag dust removal area from left to right, wherein dust collection areas are arranged at the lower parts of the electrostatic precipitation area and the cloth bag dust removal area, a purified gas area is positioned at the upper part of the cloth bag dust removal area, the gas flow distribution area comprises two vertically placed gas flow distribution plates and a skewed gas flow distribution plate, the electrostatic precipitation area comprises a cathode line, an anode plate and a high-voltage electrical device, an electrical bag combining plate is arranged at the joint of the electrostatic precipitation area and the cloth bag dust removal area, the cloth bag dust removal area comprises a gas flow guide plate, a cloth bag, a framework and a pattern plate, the framework and the cloth bag are integrated into a whole to be installed on the pattern plate, each dust collection area consists of a dust hopper and a dust hopper baffle plate, and the purified gas area essentially consists of partition plates. The skewed gas flow type electrostatic fabric filter obtains the optimal gas flow distribution in the electrostatic fabric filter, reduces the generation of eddy current in the electrostatic precipitation area, reduces the running resistance of the cloth bag dust removal area and the reentrainment of dust, and ensures the low-resistance efficient running of the electrostatic fabric filter.
Description
Technical field
The utility model relates to a kind of environmental protection equipment, particularly a kind of oblique airflow type electric bag complex dust collector.
Background technology
Dust is floating dust between 0.5 ~ 5 μ m of the formidable enemy of human health, especially particle diameter (that is, long-term even swam in dust in the atmosphere in several years), to people's harm maximum.Particle diameter〉grit of 5 μ m, because effect of inertia can be got rid of by vibrissa and respiratory tract mucus; The grit of particle diameter<0.5 μ m also can be discharged with phlegm because of the gas diffusion is attached on upper respiratory tract surface.Particle diameter is that the floating dust of 0.5 ~ 5 μ m can directly arrive lung by respiratory tract and deposits only, harmful to human, and its extent of injury depends on the pernicious gas and the microorganism of particle diameter, solubility, chemical composition and the absorption thereof of particulate.And the floating dust major part of 0.5 ~ 5 μ m comes from the coal-fired dust that produces.
At present coal-burning boiler has used various dedusting technologies to capture fly ash granule in the flue gas.What wherein generally adopt is electrostatic precipitator.Because the electrostatic precipitator efficiency of dust collection is subjected to the influence of dust characteristic bigger, and coal-fired composition difference is bigger, the dust characteristic that is produced also has nothing in common with each other, electrostatic precipitator is limited to the trapping ability of minuteness particle, under day by day strict environmental protection standard required, four common electric fields or five electric field electrostatic precipitator can't satisfy the requirement of emission compliance.
Compare with electrostatic precipitation, bag-type dusting has its incomparable advantage.It is outstanding for capturing ultra-fine grain dirt (0.5 ~ 5 μ m) performance, is not subjected to dust concentration substantially simultaneously, than the influence of factors such as resistance, particle diameter distribution, still can be easy to realize 50mg/Nm when the high concentration smoke filtration
3The following discharge standard of Yao Qiuing, even can reach 10mg/Nm
3About, efficiency of dust collection reaches more than 99.9%.But sack cleaner running resistance height, life of bag filter is short, and it is relevant with the operation resistance with flue gas flow rate, and the chemical fibre filter bag can not bear high-temperature flue gas and pass through, and moisture in the flue gas and oily matter content are also had the requirement of strictness.
Electricity bag composite dedusting is the organic assembling of electric precipitation and bag-type dusting, and the efficiency of dust collection height can satisfy present maximum discharge requirement standard better, has obtained gradually in recent years using and promoting.Electric-bag complex dust collector is made up of two unit usually, i.e. electric precipitation unit and bag dust removing units.Generally speaking, one or two electric field is arranged in the electric precipitation unit.This electricity bag composite dedusting is a preceding electricity back pocket type, combines electric precipitation and bag-type dusting advantage separately in theory.Its basic imagination is earlier by the Dust Capacity more than 70% in the advance flue gas of prime electric field, again by remaining fine solid particle in the back level bag-type dusting capture flue gas.The pre-dedusting of prime electric field has reduced the dust load amount of filter bag, thereby has also reduced the climbing speed of bag-type dusting resistance.In addition, the charged muffin layer that makes again of like charges becomes loose, and under identical dust load, the muffin layer resistance that has like charges is littler.The acting in conjunction of electric-bag complex dust collector makes that the cleaning cycle of filter bag is elongated, thereby can save the deashing energy consumption of dedusting, the service life of prolongation filter bag.That is to say, electricity bag composite dedusting utilizes the one-level electric-field charge to capture big dust particle and then reduces flue gas significantly and enters into the interior dust concentration of filter bag bin, effectively avoided big dust particle under the inertia force effect to the washing away of filter bag, help the prolongation of life of bag filter.Because dust has like charges under electric field action, the dust layer that the filter bag outer surface adheres to is loose relatively, and the gas permeability of filtration is very good, and deashing is more easy simultaneously, thereby can effectively reduce the equipment running resistance, saves the operating cost of equipment.
Conventional at present electricity bag composite dedusting adopts the current-sharing distribution design, but this structure can produce the problem of two aspects: the one, and the operation rate in electric precipitation district can not be excessive, otherwise will cause the electric precipitation district to form more eddy current, produce reentrainment of dust, have a strong impact on the efficiency of dust collection of electric precipitation.The 2nd, electric precipitation district and bag-type dust district combine closely, and cause air-flow can't form the air-flow of vertical direction effectively in the bag-type dust district, have greatly reduced the cloth bag utilization rate, and can cause the cloth bag part impaired, influence bag-type dust efficient.
The utility model content
The purpose of this utility model is to solve the problems of the prior art, a kind of oblique airflow type electric bag complex dust collector is proposed, can solve at present in electric-bag complex dust collector, because the efficiency of dust collection that the air-flow distribution problem causes is low, operating rate is low, problems such as cloth bag weak point in service life, concrete technical scheme is as follows.
Oblique airflow type electric bag complex dust collector, comprise the distribution of air flow district by left-to-right distribution, electric precipitation district and bag-type dust district are provided with accumulation area below electric precipitation district and bag-type dust district, be provided with the pure qi (oxygen) district above the bag-type dust district, these 5 districts are installed in the housing; The distribution of air flow district comprises that tiltedly airflow-distribution board is positioned at the junction in distribution of air flow district and electric precipitation district by left-to-right spaced successively two airflow-distribution board and oblique airflow-distribution boards of vertically placing; The electric precipitation district comprises cathode line and positive plate, and cathode line and positive plate intersect in the electric precipitation district to be placed, and on cathode line top high-voltage electric device is installed; Two chambers of arranging about the bag-type dust district comprises, each chamber includes air flow guiding plate, card, some support frames and cloth bag, each bar cloth bag is nested in the support frame outside and forms a whole as a dust removing units, each dust removing units is installed on the card, the air flow guiding plate is arranged on the bottom in the bag-type dust district, is provided with electricity bag board between two chambers; Another electricity bag board is set in the junction in electric precipitation district and bag-type dust district; The centre in pure qi (oxygen) district is mounted with dividing plate.
Further optimize, described oblique airflow-distribution board is positioned at the junction in distribution of air flow district and electric precipitation district, and distribution of air flow district and electric precipitation district are coupled together, and tiltedly airflow-distribution board is a porous plate.
Further optimize, the aperture of described porous plate is 50 ~ 80mm, and percent opening is 0.3, and the deflection angle α of porous plate median plane and vertical direction is 3 ° ~ 10 °, and flow deflector is set on the porous plate at interval.
Further optimize, described electricity bag board is uniform porous plate, vertically is placed on the junction in electric precipitation district and bag-type dust district.
Further optimize, the perforate of described uniform porous plate is circular, pore size is 100-150mm, percent opening is 0.2, the lower edge of electricity bag board is than the long 100 ~ 500mm of a dust removing units, make the air-flow part in electric precipitation district pass through in the perforate of electricity bag board, a part in the bottom of electricity bag board by entering the bag-type dust district.
Further optimize, described air flow guiding plate is a perforated plate construction, the deflection angle of air flow guiding plate median plane and horizontal direction
βBe 5 ° ~ 30 °, the form of upper tightly lower sparse is adopted in the perforate of air flow guiding plate.
Further optimize, the deashing in described electric precipitation district adopts the mechanical vibrator mode; The deashing of cloth dress dedusting area adopts the pulse backblowing mode.
Flue gas trend during dedusting is: ash-laden gas is entered by oblique airflow type electric bag complex dust collector inlet, after 2 layers of airflow-distribution board, arrive the 3rd layer of oblique airflow-distribution board, because the oblique guide functions of the 3rd layer of oblique airflow-distribution board, air flow direction produces the deflection of certain angle, air-flow in the electric precipitation district forms oblique air-flow, can effectively utilize the space in electric precipitation district, air-flow arrives the junction in electric precipitation district and bag-type dust district, through the lower stream of airflow deflector, enter the bag-type dust district, form the air-flow of a vertical direction in the bag-type dust district, dust granule is stopped through the interception function of cloth bag fiber, flue gas enters air-purifying chamber, flows out through outlet.
Compared with prior art, advantage of the present utility model is: the utility model is by being provided with oblique airflow-distribution board and cloth bag air flow guiding plate, with the oblique importing electric precipitation of ash-laden gas district, avoid at the bigger eddy current of electric precipitation district generation, improve the efficiency of dust collection in electric precipitation district, reduce the dust concentration that enters the bag-type dust district.Simultaneously, air-flow enters the bag-type dust district through electricity bag board and cloth bag air flow guiding plate, through the effect of cloth bag air flow guiding plate, air-flow forms flowing of a vertical direction in the bag-type dust district, increased the area that utilizes of bag-type dust district cloth bag, reduces the damage that local scour causes, pass through the effect of deflector simultaneously, air-flow is even relatively one of bag-type dust district generation, flows to distributed more widely flowing, and has reduced the excessive problem of air velocity on the whole.The utility model is by combining oblique air-flow technology with flow equalize technology, obtained the optimum gas distributions in the electric-bag complex dust collector, thereby improve the performance of electric-bag complex dust collector, reduced the generation of electric precipitation district eddy current, reduced the running resistance in bag-type dust district, reduce reentrainment of dust, guaranteed the high-efficiency low-resistance operation of electric-bag complex dust collector.Being particularly useful for big flow flue gas handles.
Description of drawings
Fig. 1 is the structural representation of the oblique airflow type electric bag complex dust collector of the utility model.
The specific embodiment
Below in conjunction with accompanying drawing, the structure of the present utility model and the course of work are done detailed description, but enforcement of the present utility model and protection are not limited thereto.
As Fig. 1, tiltedly the airflow type electric bag complex dust collector comprises the distribution of air flow district 2 by left-to-right distribution, electric precipitation district 4 and bag-type dust district 7, below electric precipitation district 4 and bag-type dust district 7 accumulation area 11 is set, is provided with pure qi (oxygen) district 6 above bag-type dust district 7, these 5 districts are installed in the housing; Distribution of air flow district 2 comprises that tiltedly airflow-distribution board 3 is positioned at the junction in distribution of air flow district 2 and electric precipitation district 4 by left-to-right spaced successively two airflow-distribution board 15 and oblique airflow-distribution boards 3 of vertically placing; Electric precipitation district 4 comprises cathode line and positive plate 13, and cathode line and positive plate intersect in the electric precipitation district to be placed, and on cathode line top high-voltage electric device 16 is installed; Two chambers of arranging about the bag-type dust district comprises, each chamber includes air flow guiding plate 12, card 14, some support frames and cloth bag, each bar cloth bag is nested in the support frame outside and forms a whole as a dust removing units 8, each dust removing units 8 is installed on the card 14, air flow guiding plate 12 is arranged on the bottom in the bag-type dust district, is provided with electricity bag board 5 between two chambers; Another electricity bag board 5 is set in the junction in electric precipitation district 4 and bag-type dust district 7; The centre in pure qi (oxygen) district 6 is mounted with dividing plate 17.
Its occupation mode is: ash-laden gas enters electric precipitation district 4 by air inlet smoke box 1 through oblique airflow-distribution board 3, tiltedly airflow-distribution board can guide into the gas in the air inlet smoke box oblique air-flow, enter the electric precipitation district, air-flow in the electric precipitation district is oblique air-flow by inlet loudspeaker center line to electricity bag board center line, 2 electric fields are contained in the electric precipitation district, combine by anode and cathode, cathode line can adopt barb type, positive plate can adopt conventional C480 type, soot cleaning system adopts the mechanical vibrator mode, ash-laden gas is removed the 70%-80% dust granule in the electric precipitation district, be provided with control of dust ash bucket 11 in bottom, electric precipitation district, the ash bucket upper edge is provided with baffle plate 10, and the dust that settles down is discharged by air-transport system.
Enter bag-type dust district 7 through the flue gas of primary purifying by an air flow guiding plate 12 and an electricity bag board 5, air flow guiding plate 12 can become the flue gas water conservancy diversion of horizontal direction the air-flow of vertical direction, and in the air-flow distribution uniform in bag-type dust district.Because the interception function of cloth bag fiber, dust granules is blocked, and flue gas can pass through, along with the carrying out of dedusting, dust ulking thickness on the cloth bag surface increases gradually, when the filtration time arrived setting value, the pulse compression air entered the cloth bag inboard, and cloth bag produces rapid extensional motion, dust is because the kinetic energy effect that the cloth bag motion produces, break away from the cloth bag surface and fall into ash bucket, flue gas after being purified enters air-purifying chamber by the cloth bag outlet, enters chimney by electric bag dust collector outlet 9 then.
The oblique airflow-distribution board of porch can produce the downward oblique air-flow of level, effectively is reduced in the generation of electric precipitation district eddy current, improves the air-flow fltting speed, increases the efficiency of dust collection in electric precipitation district; And cutoff board being set in electric precipitation district and top, bag-type dust district, the bottom is provided with porous plate, can effectively reduce cloth bag is directly washed away, and improves bag-type dust efficient.The utility model is oblique air-flow technology and airflow-distribution board organic assembling, and obtains best air motion form in conjunction with the openings of sizes of cutoff board, thereby improves efficiency of dust collection, reduce reentrainment of dust, increase cloth bag service life, the efficiency of dust collection height, running resistance low (<800Pa), the cloth bag life-span is long, and can satisfy high standard discharging (≤30mg/Nm
3), the flue gas that especially is fit to big flow is handled.
Claims (8)
1. oblique airflow type electric bag complex dust collector, it is characterized in that comprising distribution of air flow district (2) by left-to-right distribution, electric precipitation district (4) and bag-type dust district (7), below in electric precipitation district (4) and bag-type dust district (7) is provided with accumulation area (11), be provided with pure qi (oxygen) district (6) in bag-type dust district (7) top, these 5 districts are installed in the housing; Distribution of air flow district (2) comprises that tiltedly airflow-distribution board (3) is positioned at the junction of distribution of air flow district (2) and electric precipitation district (4) by left-to-right spaced successively two airflow-distribution board (15) and oblique airflow-distribution boards (3) of vertically placing; Electric precipitation district (4) comprises cathode line and positive plate (13), and cathode line and positive plate intersect in the electric precipitation district to be placed, and high-voltage electric device (16) is installed on cathode line top; Two chambers of arranging about the bag-type dust district comprises, each chamber includes air flow guiding plate (12), card (14), some support frames and cloth bag, each bar cloth bag is nested in the support frame outside and forms a whole as a dust removing units (8), each dust removing units (8) is installed on the card (14), air flow guiding plate (12) is arranged on the bottom in the bag-type dust district, is provided with electricity bag board (5) between two chambers; Another electricity bag board is set in the junction of electric precipitation district (4) and bag-type dust district (7); The centre in pure qi (oxygen) district (6) is mounted with dividing plate (17).
2. oblique airflow type electric bag complex dust collector according to claim 1, it is characterized in that: described oblique airflow-distribution board (3) is positioned at the junction in distribution of air flow district and electric precipitation district, distribution of air flow district and electric precipitation district are coupled together, and tiltedly airflow-distribution board is a porous plate.
3. oblique airflow type electric bag complex dust collector according to claim 2, it is characterized in that: the aperture of described porous plate is 50 ~ 80mm, percent opening is 0.3, and the deflection angle α of porous plate median plane and vertical direction is 3 ° ~ 10 °, and flow deflector is set on the porous plate at interval.
4. oblique airflow type electric bag complex dust collector according to claim 1 is characterized in that: described electricity bag board (5) is uniform porous plate, vertically is placed on the junction of electric precipitation district (4) and bag-type dust district (7).
5. oblique airflow type electric bag complex dust collector according to claim 4, the perforate that it is characterized in that described uniform porous plate is for circular, pore size is 100-150mm, percent opening is 0.2, the lower edge of electricity bag board is than the long 100 ~ 500mm of a dust removing units (8), make the air-flow part in electric precipitation district pass through in the perforate of electricity bag board, a part in the bottom of electricity bag board by entering the bag-type dust district.
6. oblique airflow type electric bag complex dust collector according to claim 1 is characterized in that: described air flow guiding plate (12) is a perforated plate construction, the deflection angle of air flow guiding plate (12) median plane and horizontal direction
βBe 5 ° ~ 30 °, the form of upper tightly lower sparse is adopted in the perforate of air flow guiding plate (12).
7. oblique airflow type electric bag complex dust collector according to claim 1 is characterized in that: the deashing in described electric precipitation district adopts the mechanical vibrator mode; The deashing of cloth dress dedusting area adopts the pulse backblowing mode.
8. oblique airflow type electric bag complex dust collector according to claim 1 is characterized in that: accumulation area (11) is made up of ash bucket and ash bucket baffle plate (10), and ash bucket baffle plate (10) is installed in ash bucket top.
Priority Applications (1)
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CN 201220433639 CN203075796U (en) | 2012-08-29 | 2012-08-29 | Skewed gas flow type electrostatic fabric filter |
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CN 201220433639 CN203075796U (en) | 2012-08-29 | 2012-08-29 | Skewed gas flow type electrostatic fabric filter |
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CN 201220433639 Expired - Fee Related CN203075796U (en) | 2012-08-29 | 2012-08-29 | Skewed gas flow type electrostatic fabric filter |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102824804A (en) * | 2012-08-29 | 2012-12-19 | 华南理工大学 | Skewed gas flow electric bag composite dust remover |
CN103908863A (en) * | 2014-04-04 | 2014-07-09 | 泰兴电除尘设备厂有限公司 | Electrostatic and fabric composite filter |
CN103933812A (en) * | 2014-03-28 | 2014-07-23 | 中国科学院过程工程研究所 | Composite diversion inner component applied to electric bag dust collector |
CN104069945A (en) * | 2014-06-05 | 2014-10-01 | 王建排 | Vehicle-mounted efficient PM2.5 particle cutting and extinguishing device |
-
2012
- 2012-08-29 CN CN 201220433639 patent/CN203075796U/en not_active Expired - Fee Related
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102824804A (en) * | 2012-08-29 | 2012-12-19 | 华南理工大学 | Skewed gas flow electric bag composite dust remover |
CN102824804B (en) * | 2012-08-29 | 2014-12-31 | 华南理工大学 | Skewed gas flow electric bag composite dust remover |
CN103933812A (en) * | 2014-03-28 | 2014-07-23 | 中国科学院过程工程研究所 | Composite diversion inner component applied to electric bag dust collector |
CN103908863A (en) * | 2014-04-04 | 2014-07-09 | 泰兴电除尘设备厂有限公司 | Electrostatic and fabric composite filter |
CN104069945A (en) * | 2014-06-05 | 2014-10-01 | 王建排 | Vehicle-mounted efficient PM2.5 particle cutting and extinguishing device |
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