CN102784719B - Water internally-distributed type flexible dust collecting electrode device - Google Patents

Water internally-distributed type flexible dust collecting electrode device Download PDF

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Publication number
CN102784719B
CN102784719B CN201210295051.2A CN201210295051A CN102784719B CN 102784719 B CN102784719 B CN 102784719B CN 201210295051 A CN201210295051 A CN 201210295051A CN 102784719 B CN102784719 B CN 102784719B
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CN
China
Prior art keywords
dust collecting
flexible dust
water
type flexible
dust
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CN201210295051.2A
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Chinese (zh)
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CN102784719A (en
Inventor
马春元
崔琳
常景彩
王鹏
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山东大学
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Priority to CN201210295051.2A priority Critical patent/CN102784719B/en
Publication of CN102784719A publication Critical patent/CN102784719A/en
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Publication of CN102784719B publication Critical patent/CN102784719B/en

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Abstract

The invention discloses a water internally-distributed type flexible dust collecting electrode device, comprising a driving shaft, a driven shaft and flexible dust collecting electrodes, wherein the flexible dust collecting electrode is wound on the driving shaft and the driven shaft; a plurality of water distributing devices are arranged between the flexible dust collecting electrodes between the driving shaft and the driven shaft; the driving shaft is connected with a power device; and electrodes are arranged on at least one side outside the flexible dust collecting electrodes. According to the water internally-distributed type flexible dust collecting electrode device disclosed by the invention, the dust collecting electrodes employ two arrangement modes of motion and fixation; the water distributing devices are steel pipes with pores or grooves at a certain degree and are disposed between the flexible dust collecting electrodes so as to distribute water from the center of the dust collecting electrodes, and the water distributing devices are also used as support structures of the flexible dust collecting electrodes. The water internally-distributed type flexible dust collecting electrode device can realize uniform distribution and automatic and efficient ash removal of water films, and can avoid corrosion problem of metallic dust collecting electrodes, thus guaranteeing a wet type static dust collector to run steadily, economically, safely and reliably, and realizing efficient capturing of micro-fine particulate matters.

Description

Interior water-distributing type flexible dust device
Technical field
The present invention relates to a kind of gas pollution control technology, especially a kind of interior water-distributing type flexible dust device being applied to wet cottrell.
Background technology
At present, along with " thermal power plant's pollutant emission standard " (GB132232011) formal enforcement and " ambient air quality " (GB30952012) formally issue, the emission control for superfine particulate matter formally launches.As the coal-burning power plant of the important emission source of Atmospheric Grains matter, although be all provided with deduster, but that generally adopt is dry electrostatic cleaner (ESP), this deduster dust collecting electrode is run under dry state, not only low for the high resistivity dust particle collection efficiency easily forming inverse corona, and for 10 μm of (particularly 2.5 μm) following subparticles, because minuteness particle is difficult to charged, and electrode vibrators generation reentrainment of dust easily makes the minuteness particle trapped overflow, and causes removal efficiency sharply to decline.The escape of a large amount of fine dust particle causes dust concentration discharge excessive, not only be difficult to satisfied new standard-required, and owing to being mostly enriched in the fine dust particle of less than 10 μm to the poisonous and hazardous major pollutants of human body, the escape of a large amount of fine dust particle has also had a strong impact on the healthy of people, causes huge economic loss.
Adopt wet type dust collecting electrode effectively can overcome the inverse corona problem of dry dust-collecting pole and subparticle reentrainment of dust can be prevented, therefore, it is possible to effectively improve the efficiency that electrostatic precipitation particularly removes fine dust.But the wet type dust collecting electrode of commercial Application is generally all made up of hard materials such as metals at present, due to problems such as surface tension and machined deviations from planarity, flushing water can not be completely uniform on whole dust collecting electrode surface, easily form " channel " on dust collecting electrode surface, the local grit that such current do not flush easily is accumulated and fouling, as dismantled cleaning not in time, dust collecting electrode finally can be caused to lose efficacy; The metal dust collecting electrode of the more perishable common material of the compositions such as the acid mist contained in flue gas, therefore most of metal dust collecting electrode adopts the higher alloy material of cost to make.The problems referred to above have made to adopt the aspect such as electrostatic precipitator stable equipment operation, security reliability, economy of wet type dust collecting electrode to receive and have had a strong impact on.
In addition, Chinese patent ZL200910019222.7 discloses a kind of homogenizing fabric dust collecting electrode surface water film device and technique, and this technique is by the water distributing pore of the Φ 1-Φ 2mm that gathers in dust collecting electrode upper end, and water flows downward under gravity, utilize fiber capillarity, realize the uniform of moisture film.Because this process unit only installs water-distributing device in dust collecting electrode upper end, moisture film can only by upper end to downward-extension, for the dust collecting electrode that area is larger, easily cause dust collecting electrode upper end water film thickness excessive and the problem that lower end water film thickness is inadequate, affect the dust-collecting efficiency of dust collecting electrode; In addition, the different deashings realizing dust collecting electrode only by grey cake layer and dust collecting electrode surface tension and shrinkage ratio in above-mentioned patent, easily cause deashing thoroughly, affect follow-up efficiency of dust collection.
Summary of the invention
The object of the invention is for overcoming above-mentioned the deficiencies in the prior art, a kind of interior water-distributing type flexible dust device is provided, this device can realize being uniformly distributed with automatical and efficient deashing of moisture film and avoid the etching problem of metal dust collecting electrode, ensure that wet cottrell equipment is stable, economical, run safely and reliably, realize the efficient trapping of fine particle.
For achieving the above object, the present invention adopts following technical proposals:
Water-distributing type flexible dust device in a kind of, comprise driving shaft, driven shaft and type flexible dust, described type flexible dust is around on driving shaft and driven shaft, some water-distributing devices are provided with between the type flexible dust between driving shaft and driven shaft, driving shaft is connected with power set, and described type flexible dust outside is at least provided with electrode in side.
Described type flexible dust outside is provided with the deashing device of at least one and its exterior surface.
Described deashing device is a scraper plate.
At least one end of described driving shaft and driven shaft is provided with stopping means.
Described stopping means is limited block or spacing preiection.
The plate body that described type flexible dust is made up of flexible fabric.
Described water-distributing device is the pipe with aperture or groove.
The angle of the aperture on described pipe or groove and horizontal direction is greater than 0 ° and is less than 90 °.
Water-distributing type flexible dust device in a kind of, comprise the type flexible dust of pair of parallel setting, be provided with water-distributing device between described pair of flexible dust collecting electrode, the outside of type flexible dust be provided with electric conductivity testing arrangement, described type flexible dust outside is at least provided with electrode in side.
Distance between described pair of flexible dust collecting electrode is between 20-80mm.
The plate body that described type flexible dust is made up of flexible fabric.
Described water-distributing device is the pipe with aperture or groove.
The angle of the aperture on described pipe or groove and horizontal direction is greater than 0 ° and is less than 90 °.
Type flexible dust of the present invention adopts mobile and fixes two kinds of arrangement forms, and water-distributing device adopts the steel pipe with certain angle aperture or groove, is put between type flexible dust, from the sandwich water distribution of dust collecting electrode, and the double supporting construction doing type flexible dust.
When adopting portable type flexible dust, dust collecting electrode adopts upper and lower shuttling movement mode, water-distributing device is fixed between the type flexible dust of rotating up and down, is sprayed water, realize the stable and uniform water distribution of dust collecting electrode by the shuttling movement up and down of dust collecting electrode and the regularity of water-distributing device.Deashing device is provided with, by realizing the degree of depth deashing of dust collecting electrode in dust collecting electrode moving process with the contact friction of deashing device or spray in dust collecting electrode bottom and/or top.When adopting said structure, driving shaft position fixes and rotating speed is adjustable, and driven shaft position is adjustable and relatively fixing, to ensure that type flexible dust remains vertical and is in tensioning state;
When adopting fixed type flexible dust, dust collecting electrode adopts double-decker to arrange, distance between two-layer is between 20-80mm, water-distributing device is fixed between two panels dust collecting electrode, dust collecting electrode is provided with electric conductivity testing arrangement, determine the water spray water yield and water spray interval by the change of dust collecting electrode conductance, realize stable and uniform water distribution and the deashing of flexible control of dust.For preventing dust collecting electrode from rocking, dust collecting electrode adopts layering fixed form to fix.
During application, the present invention's many covers parallel combinations can be positioned in wet cottrell as required together and use, the distance between adjacent dust collecting electrode is between 200-800mm; Often in cover, in the flexible dust collect plant of water spray, dust collecting electrode is all as a whole, and interior water injector can install many covers as required.
The invention has the beneficial effects as follows, the present invention can realize being uniformly distributed with automatical and efficient deashing of moisture film and avoid the etching problem of metal dust collecting electrode, ensure that wet cottrell equipment is stable, economical, run safely and reliably, realize the efficient trapping of fine particle.
Accompanying drawing explanation
Fig. 1 is the embodiment of the present invention 1 structural representation;
Fig. 2 is the top view of Fig. 1;
Fig. 3 is the embodiment of the present invention 2 structural representation;
Fig. 4 is the top view of Fig. 3;
Wherein 1. driving shafts, 2. type flexible dust, 3. water-distributing device, 4. deashing device, 5. electrode, 6 driven shafts, 7. stopping means, 8. electric conductivity testing arrangement.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is further described.
Embodiment 1: as shown in Figure 1, 2, interior water-distributing type flexible dust device, comprise driving shaft 1, driven shaft 6 and type flexible dust 2, described type flexible dust 2 is around on driving shaft 1 and driven shaft 6, some water-distributing devices 3 are provided with between the type flexible dust 2 between driving shaft 1 and driven shaft 6, driving shaft 1 is connected with power set, and described type flexible dust 2 outside is at least provided with electrode 5 in side.Type flexible dust 2 outside is provided with the deashing device 4 of at least one and its exterior surface.At least one end of driving shaft 1 and driven shaft 6 is provided with stopping means 7.Stopping means 7 is limited block or spacing preiection.The plate body that type flexible dust 2 is made up of flexible fabric.Water-distributing device 3 is the steel pipe with aperture or groove.The angle of the aperture on steel pipe or groove and horizontal direction is greater than 0 ° and is less than 90 °.
Along with voltage raises, electrode 5 point discharge makes air ionization, produces a large amount of anion; After dust granules in flue gas is combined with anion, move to type flexible dust 2; Type flexible dust 2 realizes upper and lower shuttling movement by driving shaft 1, in motion process by with the coordinating of water-distributing device 3, realize being uniformly distributed of moisture film; Be furnished with the dust granules of type flexible dust 2 capture movement to dust collecting electrode of uniform water film, due to the viscous force of water, can not there is secondary back-mixing problem in particle particularly subparticle, realize the efficient trapping of subparticle; Type flexible dust 2, in rotary movement, not only keeps the continuous uniform of moisture film to distribute, and by the friction with deashing device 4, realizes the deashing of type flexible dust 2.
Embodiment 2: as shown in Figure 3,4, interior water-distributing type flexible dust device, comprise the type flexible dust 2 of pair of parallel setting, water-distributing device 3 is provided with between described pair of flexible dust collecting electrode 2, type flexible dust 2 is implanted into electric conductivity testing arrangement 8, and described type flexible dust 2 outside is at least provided with electrode 5 in side.Distance between pair of flexible dust collecting electrode 2 is between 20-80mm.The plate body that type flexible dust 2 is made up of flexible fabric.Water-distributing device 3 is the steel pipe with aperture or groove.The angle of the aperture on steel pipe or groove and horizontal direction is greater than 0 ° and is less than 90 °.
Along with voltage raises, electrode 5 point discharge makes air ionization, produces a large amount of anion; After dust granules in flue gas is combined with anion, move to type flexible dust 2; Type flexible dust 2 is provided with electric conductivity test device 8, the change according to electrical conductivity carries out water distribution to by water-distributing device 3 pairs of dust collecting electrode; Be furnished with the dust granules of type flexible dust 2 capture movement to dust collecting electrode of uniform water film, due to the viscous force of water, can not there is secondary back-mixing problem in particle particularly subparticle, realize the efficient trapping of subparticle; The deashing of type flexible dust is realized by water-distributing device 3.
By reference to the accompanying drawings the specific embodiment of the present invention is described although above-mentioned; but not limiting the scope of the invention; one of ordinary skill in the art should be understood that; on the basis of technical scheme of the present invention, those skilled in the art do not need to pay various amendment or distortion that creative work can make still within protection scope of the present invention.

Claims (6)

1. water-distributing type flexible dust device in a kind, it is characterized in that, comprise driving shaft, driven shaft and type flexible dust, described type flexible dust is around on driving shaft and driven shaft, be provided with some water-distributing devices between the type flexible dust between driving shaft and driven shaft, described water-distributing device is the pipe with aperture or groove; Driving shaft is connected with power set, and described type flexible dust outside is at least provided with electrode in side; Described type flexible dust outside is provided with the deashing device of at least one and its exterior surface; Described deashing device is a scraper plate.
2. interior water-distributing type flexible dust device as claimed in claim 1, it is characterized in that, at least one end of described driving shaft and driven shaft is provided with stopping means.
3. interior water-distributing type flexible dust device as claimed in claim 2, it is characterized in that, described stopping means is limited block or spacing preiection.
4. in, a water-distributing type flexible dust device, comprises the type flexible dust of pair of parallel setting, is provided with water-distributing device between described pair of flexible dust collecting electrode, and described water-distributing device is the pipe with aperture or groove; Type flexible dust is implanted into electric conductivity testing arrangement, and described type flexible dust outside is at least provided with electrode in side; The plate body that described type flexible dust is made up of flexible fabric.
5. in as described in claim 1 or 4, water-distributing type flexible dust device, is characterized in that, the angle of the aperture on described pipe or groove and horizontal direction is greater than 0 ° and is less than 90 °.
6. interior water-distributing type flexible dust device as claimed in claim 5, it is characterized in that, the distance between described pair of flexible dust collecting electrode is between 20-80mm.
CN201210295051.2A 2012-08-20 2012-08-20 Water internally-distributed type flexible dust collecting electrode device CN102784719B (en)

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CN103386364B (en) * 2013-07-19 2016-08-24 南京通用电气装备有限公司 A kind of infiltration type metal gauze dust collecting electrode and wet electrical dust precipitator thereof
CN103586135B (en) * 2013-10-23 2017-01-25 华北电力大学(保定) Formation mode of dust collection pole plate and ash removal water film of wet-type electric precipitator
CN104492604B (en) * 2014-12-22 2016-07-06 河北工业大学 A kind of wet type moisture film electrode electricity coalescer
CN106140473A (en) * 2015-04-16 2016-11-23 李存德 Conductive flexible is breathed freely polar plate electrostatic precipitation device
CN106540809A (en) * 2015-09-16 2017-03-29 武汉科技大学 A kind of water logging self-cleaning cloth roller shutter wet electrostatic dust arrester installation
CN105583076A (en) * 2015-12-29 2016-05-18 山东神华山大能源环境有限公司 Dry and wet coupling electrostatic dust collection system and dust collection technology
CN105583078B (en) * 2016-01-08 2017-08-29 马海霞 Liquid level electrostatic precipitator
CN106881197B (en) * 2017-01-11 2019-04-09 山东大学 Water spontaneous evaporation humidification flue gas device, dry electrostatic cleaner and its working method
CN110252511B (en) * 2019-05-23 2020-11-24 武汉科技大学 Wet electrostatic dust collector

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