CN203540706U - Suction type dust collection polar plate of electrostatic precipitator - Google Patents

Suction type dust collection polar plate of electrostatic precipitator Download PDF

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Publication number
CN203540706U
CN203540706U CN201320598686.XU CN201320598686U CN203540706U CN 203540706 U CN203540706 U CN 203540706U CN 201320598686 U CN201320598686 U CN 201320598686U CN 203540706 U CN203540706 U CN 203540706U
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China
Prior art keywords
electrostatic precipitator
dust
pole plate
air draught
air suction
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CN201320598686.XU
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Chinese (zh)
Inventor
马春元
崔琳
常景彩
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Shandong Xiang Huan Environmental Protection Engineering Co. Ltd.
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Shandong University
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Abstract

The utility model discloses a suction type dust collection polar plate of an electrostatic precipitator. The dust collection polar plate consists of two steel plates, wherein a hollow sandwich structure is formed around the two steel plates in a sealed manner; a plurality of air suction grooves are formed in the outer side surface of each of the two steel plates; a plurality of air suction tubes are arranged between the two steel plates; the air suction grooves are connected with a main air suction pipeline through the air suction tubes; the air suction tubes are all connected with the main air suction pipeline. When dust is accumulated to be 1mm-2mm thick, a vibration device is powered on, and the air suction tubes are powered on simultaneously to suck fine grains, which return and are mixed into fume in the vibration dust cleaning process, into a cloth bag dust collector to be removed, or the fine grains are guided to an entrance of the electrostatic precipitator and enter into the electrostatic precipitator again to be removed in a circulation manner. The dust collection polar plate is simple to transform and low in investment expense; due to transformation and reasonable arrangement of the dust collection polar plate, the removal efficiency of the electrostatic precipitator is effectively improved with a small amount of investment, the removal efficiency of fine dust is greater than 90%, and the concentration of dust at a dust outlet is less than 30mg/m<3>.

Description

A kind of suction type dust-collecting pole plate for electrostatic precipitator
Technical field
The utility model relates to gas pollution control field, relates in particular to a kind of suction type dust-collecting pole plate for electrostatic precipitator.
Background technology
China is the country that uses in the world coal-burning boiler quantity maximum, and according to statistics, between 2000-2007, the annual industrial fumes discharge capacity of China all exceedes 8,000,000 tons, wherein approximately 4,000,000 tons of minuteness particles (PM10, PM2.5).Coal-burning power plant is the important emission source of Atmospheric Grains matter, approximately 4,000,000 tons of the annual smoke discharge amounts in China coal-burning power plant, and wherein minuteness particle discharge capacity exceedes 3,000,000 tons, and the discharge of a large amount of coal smokes has caused serious environmental pollution.
For controlling the discharge of coal smoke, coal-burning power plant is all provided with dust arrester.At present, in China coal-burning power plant, smoke purifying equipment 90% left and right adopts electrostatic precipitator (ESP).ESP utilizes Coulomb force to realize the charged cleaner with flow separation of particle, compare with other dedusters, its efficiency of dust collection is high, to the above dust granules removal efficiency of particle diameter 10 μ m up to more than 99%, but for particularly m) following subparticle of 2.5 μ of 10 μ m(, removal efficiency is lower, and wherein dust collecting pole plate rapping produces reentrainment of dust the subparticle that trapped is overflowed is the main cause that causes this problem.Why needing rapping pole plate, is that polar board surface dust stratification thickens, and has a strong impact on pole plate dust-collecting efficiency, if do not carried out vibration dust-cleaning, can cause electrostatic precipitation efficiency sharply to decline because along with the ESP prolongation of running time.No matter electrostatic precipitator is to adopt side vibration dust-cleaning or top rapping deashing, is all by external force rapping, to make pole plate produce vibration the dust stratification on pole plate is shaken off.But because the dust collecting pole plate height adopting is at present between several meters to tens meters, dust stratification is easy to collision crashing in dropping process, and the subparticle that part pulverizing forms again back-mixing causes electrostatic precipitation to remove the reduction of subparticle and total efficiency of dust collection in flue gas.
Utility model content
The deficiency existing for solving prior art, the utility model discloses a kind of suction type dust-collecting pole plate for electrostatic precipitator.In electrostatic precipitator, install after multiple identical like this suction type dust-collecting pole plates, can effectively solve the fine dust particle secondary back-mixing problem causing in deashing process, improve electrostatic precipitator and remove fine dust and total efficiency of dust collection.
For achieving the above object, concrete scheme of the present utility model is as follows:
A kind of suction type dust-collecting pole plate for electrostatic precipitator, by two block plates, formed, the surrounding of two block plates forms hollow sandwich structure by sealing, on the lateral surface of two block plates, be equipped with some air draught grooves, between two block plates, be provided with some aspiration channels, air draught groove is connected with air draught total pipeline by aspiration channel.
Distance between described two block plates is between 10-50mm.
Described aspiration channel is all connected with air-introduced machine.
Described aspiration channel is even isobaric aspiration channel, identical for guaranteeing the blast that pole plate lateral surface air draught groove each several part is subject to.
The angular range of described air draught groove between 0-180 degree, width range between 0-10mm, between air draught groove, be parallel to each other and distance between 500-1000mm.
The startup frequency of described aspiration channel is consistent with pole plate rapping frequency, and air draught time and air draught intensity regulate by air-introduced machine.
Described air draught total pipeline is connected with sack cleaner or electrostatic precipitator entrance.
For a method of work for the suction type dust-collecting pole plate of electrostatic precipitator, comprise the following steps:
Step 1: latter two electric field that suction type dust-collecting pole plate is arranged on to electrostatic precipitator;
Step 2: the flue gas of discharging from boiler first pass through electrostatic precipitator several electric fields, realize efficiently removing of most of particle, afterwards flue gas enter be provided with can suction-type pole plate electric field, particle continuous deposition on pole plate in flue gas;
Step 3: when dust stratification is between 1-2mm time, rapping apparatus starts, and simultaneously aspiration channel is started working, and back-mixing in vibration dust-cleaning process is returned to subparticle in flue gas and be drawn in sack cleaner and remove, or cause electrostatic precipitator porch, rejoin electrostatic precipitator and carry out circularly removing.
This suction type dust-collecting pole plate, take conventional electrostatic deduster as basis, comprise two block plates that form hollow sandwich structure, at steel plate lateral surface, have air draught groove, in the middle of interlayer of steel plate, be furnished with aspiration channel, subparticle back-mixing in vibration dust-cleaning process being returned in flue gas by air-introduced machine is drawn in subsequent treatment system, avoids the secondary back-mixing problem of subparticle, improves dust-collecting efficiency; Two block plates are sealing around, guarantees that flue dust does not enter interlayer deposition.Subparticle after gathering dust enters external sack cleaner and removes, or causes electrostatic precipitator porch, reenters electrostatic precipitator and carries out circularly removing.
The beneficial effects of the utility model:
The utility model transformation is simple, investment cost is low, by the transformation of dust collecting pole plate and rational position, with small investment, effectively improves electrostatic precipitator removal efficiency, realize fine dust particulate removal efficiency more than 90%, guarantee that flue dust exit concentration is less than 30mg/m 3, for the low investment transformation for increasing productiion capacity of domestic a large amount of electrostatic precipitator, having important practical significance, application prospect is boundless.
Accompanying drawing explanation
Fig. 1 the utility model mounting structure schematic diagram;
Fig. 2, the utility model structure top view;
In figure, 1, sack cleaner, 2, air draught total pipeline, 3, aspiration channel, 4, air draught groove, 5, steel plate, 6, electrostatic precipitator.
The specific embodiment:
Below in conjunction with accompanying drawing, the utility model is elaborated:
As shown in Figure 1-2, a kind of suction type dust-collecting pole plate for electrostatic precipitator, preferential suggestion is arranged in latter two electric field of electrostatic precipitator 6, each dust collecting pole plate comprises that the surrounding of two block plate 5, two block plates 5 forms hollow Double-layer clamp plate structure by sealing, is equipped with some air draught grooves 4 on two block plates 5, between two block plates 5, be provided with some aspiration channels 3, air draught groove 4 is connected with air draught total pipeline 2 by aspiration channel 3, and aspiration channel 3 is all connected with air draught total pipeline 2, and is connected with air-introduced machine.Distance between two block plates 5 is between 10-50mm.Aspiration channel 3 is even isobaric aspiration channel, identical for guaranteeing the blast that pole plate lateral surface air draught groove 4 each several parts are subject to.The angular range of air draught groove 4 is at 0-180 degree, and width range is at 0-10mm, between air draught groove 4, be parallel to each other and distance between 500-1000mm.The startup frequency of aspiration channel 3 is consistent with steel plate 5 rapping frequencies, and air draught time and air draught intensity regulate by air-introduced machine.Air draught total pipeline 2 is connected with sack cleaner 1 or electrostatic precipitator 6 entrances.
This suction type dust-collecting pole plate, take conventional electrostatic deduster as basis, steel plate 5 is hollow Double-layer clamp plate structure, at steel plate 5 lateral surfaces, have air draught groove 4, in the middle of steel plate 5 interlayers, be furnished with aspiration channel 3, subparticle back-mixing in vibration dust-cleaning process being returned in flue gas by air-introduced machine is drawn in subsequent treatment system, avoids the secondary back-mixing problem of subparticle, improves dust-collecting efficiency; Steel plate 5 sealing around, guarantees that flue dust does not enter steel plate 5 interlayer depositions.Aspiration channel 3 is positioned at pole plate interlayer, the place that aspiration channel 3 contacts with pole plate, and at aspiration channel 3 and polar board surface fluting, this is called air draught groove 4 respectively.
During work, can suction-type pole plate be arranged in latter two electric field of electrostatic precipitator 6, from boiler discharge flue gas first pass through electrostatic precipitator 6 several electric fields, realize efficiently removing of most of particle, afterwards flue gas enter be provided with can suction-type pole plate electric field, particle continuous deposition on pole plate in flue gas.When dust stratification is to certain thickness, rapping apparatus starts, aspiration channel 3 is started working simultaneously, by air draught groove 4, back-mixing in vibration dust-cleaning process being returned to subparticle in flue gas is drawn in sack cleaner 1 and removes, or cause electrostatic precipitator 6 porch, rejoin electrostatic precipitator 6 and carry out circularly removing, realize the efficient trapping of subparticle, improve total efficiency of dust collection, the flue gas after purification is discharged through chimney simultaneously.

Claims (7)

1. the suction type dust-collecting pole plate for electrostatic precipitator, it is characterized in that, dust collecting pole plate consists of two block plates, the surrounding of two block plates forms hollow sandwich structure by sealing, the lateral surface of two block plates is provided with some air draught grooves, between two block plates, be provided with some aspiration channels, air draught groove is connected with air draught total pipeline by aspiration channel.
2. a kind of suction type dust-collecting pole plate for electrostatic precipitator as claimed in claim 1, is characterized in that, the distance between described two block plates is between 10-50mm.
3. a kind of suction type dust-collecting pole plate for electrostatic precipitator as claimed in claim 1, is characterized in that, described aspiration channel is all connected with air-introduced machine.
4. a kind of suction type dust-collecting pole plate for electrostatic precipitator as claimed in claim 1, is characterized in that, described aspiration channel is even isobaric aspiration channel, identical for guaranteeing the blast that pole plate lateral surface air draught groove each several part is subject to.
5. a kind of suction type dust-collecting pole plate for electrostatic precipitator as claimed in claim 1, is characterized in that, the angular range of described air draught groove is between 0-180 degree, and width range is at 0-10mm, between air draught groove, be parallel to each other and distance between 500-1000mm.
6. a kind of suction type dust-collecting pole plate for electrostatic precipitator as claimed in claim 1, is characterized in that, the startup frequency of described aspiration channel is consistent with pole plate rapping frequency, and air draught time and air draught intensity regulate by air-introduced machine.
7. a kind of suction type dust-collecting pole plate for electrostatic precipitator as claimed in claim 1, is characterized in that, described air draught total pipeline is connected with sack cleaner or electrostatic precipitator entrance.
CN201320598686.XU 2013-09-27 2013-09-27 Suction type dust collection polar plate of electrostatic precipitator Active CN203540706U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320598686.XU CN203540706U (en) 2013-09-27 2013-09-27 Suction type dust collection polar plate of electrostatic precipitator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320598686.XU CN203540706U (en) 2013-09-27 2013-09-27 Suction type dust collection polar plate of electrostatic precipitator

Publications (1)

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CN203540706U true CN203540706U (en) 2014-04-16

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103506220A (en) * 2013-09-27 2014-01-15 山东大学 Suction type dust collection polar plate for electrostatic dust collector and working method
CN105344481A (en) * 2015-11-13 2016-02-24 北京中和锦程科技有限公司 Composite dust collecting plate for electrostatic dust removal

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103506220A (en) * 2013-09-27 2014-01-15 山东大学 Suction type dust collection polar plate for electrostatic dust collector and working method
CN103506220B (en) * 2013-09-27 2016-03-30 山东大学 A kind of suction type dust-collecting pole plate for electrostatic precipitator and method of work
CN105344481A (en) * 2015-11-13 2016-02-24 北京中和锦程科技有限公司 Composite dust collecting plate for electrostatic dust removal
CN105344481B (en) * 2015-11-13 2018-01-19 北京中和锦程科技有限公司 Compound collecting plate for electrostatic precipitation

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Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
TR01 Transfer of patent right

Effective date of registration: 20180608

Address after: 250002 Room 201, Ma On Shan Road, Shizhong District, Ji'nan, Shandong, China, 54

Patentee after: Shandong Xiang Huan Environmental Protection Engineering Co. Ltd.

Address before: 250061 Ji'nan Lishi District, Ji'nan, Shandong Province, No. 17923

Patentee before: Shandong University

TR01 Transfer of patent right