CN100435968C - Electric dust remover with external circulation system and its using method - Google Patents
Electric dust remover with external circulation system and its using method Download PDFInfo
- Publication number
- CN100435968C CN100435968C CNB2004100505040A CN200410050504A CN100435968C CN 100435968 C CN100435968 C CN 100435968C CN B2004100505040 A CNB2004100505040 A CN B2004100505040A CN 200410050504 A CN200410050504 A CN 200410050504A CN 100435968 C CN100435968 C CN 100435968C
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- dust
- pole plate
- electric cleaner
- suction pipe
- circulating system
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Abstract
The present invention relates to an electric dust remover with an outer circulation system and a using method of the electric dust remover with an outer circulation system. The electric dust remover with an outer circulation system is characterized in that suction pipes are arranged at the tail end of a dust collecting pole plate of the last electric field of the electric dust remover; every two adjacent suction pipes are connected with one connection short pipe connected with a gathering pipe by a lead-out air pipe; the gathering pipe is connected with one end of a main input pipeline of a blower, and the other end of the main input pipeline of the blower is connected with an input opening of the blower; an output opening of the blower is connected with one end of a main output pipeline of the blower, the other end of the main output pipeline of the blower is connected with an air inlet box of the electric dust remover, and an outer circulation system of the electric dust remover is formed. Flying dust and airflow containing high dust concentration near the pole plate are sucked in the suction pipes by the suction pipes arranged at the tail end of the dust collecting pole plate and then are delivered to an air inlet box by the outer circulation system to make circulation airflow newly purified. The dust collecting efficiency of the electric dust remover can be improved through long running, the dust permeability of the electric dust remover can be reduced by 50 to 60%, and accordingly, the environmental protection effect can be greatly improved.
Description
Technical field
The present invention relates to a kind of electric cleaner, particularly relate to a kind of electric cleaner that has external circulating system, in the time of making electric cleaner pole plate vibration dust-cleaning, generation fly upward the electric cleaner that dust is effectively addressed again.
Background technology
The dust-collecting polar board of electric dust remover of prior art is when rapping, and the dust layer that falls on the pole plate comes off, and a part of dust comes off in the form of sheets and falls in the ash bucket, and some dust of while is dispersed and flies upward with air-flow again, goes forward side by side into primary air, is discharged from.This situation not only still can pollute environment, and is one of current electric cleaner dust-collecting efficiency key of being difficult to improve.In order to prevent that dust from flying upward again, two technical measures taking in the prior art are: (1) all is processed with windproof ditch on every pole plate, its objective is to make the dust that flies upward under the air-flow effect, enters windproof ditch, makes dust sedimentation in windproof ditch; (2) at the outlet casing of last electric field of electric cleaner,, be provided with 2～4 row's trough plates, further make the dust that enters in the primary air in trough plate place inertial settling perpendicular to air-flow.Above-mentioned these two technical measures are flown upward dust again to reclaiming, and play a role, but its effect remain extremely limited.Reason is that these two kinds of technical schemes all are to have utilized the inertial settling mechanism of dust, under the lower situation of air velocity (in the electric field wind speed generally equal＜1.0m/s), only the effect by inertial settling obviously is can be very not high.
Summary of the invention
The objective of the invention is in order to overcome the defective that prior art exists, provide that a kind of energy is effective to be located in the electric cleaner that flies upward dust again that the reason pole plate produces when vibration dust-cleaning, the yield of electric cleaner long-time running is significantly improved, to satisfy the environmental requirement of increasingly stringent than the prior art deduster.
Electric cleaner of the present invention, constitute and to comprise inlet box, go out gas tank, be electric field between two tanks, each electric field space is equipped with corona discharge electrode, dust collecting pole plate, vibration dust-cleaning mechanism, airflow uniform distribution plate, hitch, ash bucket, its main points are that in the space of gathering dust of last electric field of electric cleaner, the end of dust collecting pole plate is provided with suction pipe, suction pipe is by connecting short tube, draw airduct, gather pipe, blower fan input trunk line, blower fan, blower fan output trunk line also is connected to form the external circulating system of electric cleaner with inlet box.
Every row's end of the dust collecting pole plate in the space of gathering dust of last electric field all is provided with a suction pipe.The length of suction pipe and the equal in length of dust collecting pole plate.In order to guarantee evenly air draught on the length of suction pipe, suction pipe can be that equal section becomes bar seam width structure, also can be bar seam width structures such as change section.The suction pipe section width is greater than the windproof ditch width of dust collecting pole plate 2～3cm, and the height of suction pipe section determines that with the air quantity size that sucks the big height of air quantity is big more, and the air quantity low height is more little.
Above-mentioned connection short tube is in order to adjacent two suction pipes are coupled together in the lower end, and guides to outside the electric cleaner housing by drawing airduct, thereby has reduced the quantity of fairlead, helps distinguished and admirable distribution.In deduster housing outside, each is drawn airduct link together by gathering pipe, is connected with blower fan input trunk line, blower fan again, and is connected with the electric cleaner inlet box by blower fan output trunk line, the external circulating system of dust is flown upward in the formation processing again.
The dust external circulating system is flown upward in this processing again, can start before the pole plate vibration dust-cleaning, closes behind the deashing, also can often open at the electric cleaner run duration.The processing total blast volume of the above-mentioned circulatory system is that electric cleaner handles 5%～10% of air quantity, and the total blast volume of the circulatory system is that the suction pipe of every row's pole plate correspondence sucks the air quantity sum, and makes the wind speed 〉=2m/s of the bar seam suction inlet of suction pipe.
Characteristics of the present invention are: on the electric cleaner of prior art, increased by one and overlapped the external circulating system that flies upward dust when being used to handle the pole plate rapping again.Its significant effect can make the dust transmitance of electric cleaner reduce by 50～60%.This means that dust emission approximately reduces 50%, correspondingly can improve environmental protection effect greatly.Dust suction performance comparison with the present invention and known technology is listed in the table below below:
Description of drawings
Fig. 1 is the structural representation that the present invention's electricity removes device;
Fig. 2 is the A-A partial cutaway schematic of Fig. 1;
Fig. 3 is the suction-pipe structure schematic diagram that equal section becomes bar seam width;
Fig. 4 is the suction-pipe structure schematic diagram that becomes bar seam width such as section;
Among Fig. 1, Fig. 2, Fig. 3, Fig. 4,1 corona discharge electrode, 2 dust collecting pole plates, 3 suction pipes, 4 connect short tubes, 5 and draw airduct, 6 and gather pipe, 7 blower fans input trunk line, 8 blower fans, 9 inlet boxs, 10 and go out that gas tank, 11 ash buckets, 12 blower fans output trunk line, 13 housings, 14 suction pipe bars stitch, 15 baffle plates.
The specific embodiment
Example 1: a kind of electric cleaner that is used for the coal-fired plant flue gas purification, 3 electric fields are arranged, in each electric field space, the dust collecting pole plate 2 that every row is made up of 7 pole plates is housed, totally 24 to arrange, corona discharge electrode 1 is assemblied between the adjacent dust collecting pole plate 2.The end of respectively arranging dust collecting pole plate 2 at the 3rd electric field all is equipped with a rectangle suction pipe, and the suction pipe section is 75 * 400mm (wide * height), and its section width is greater than the windproof ditch width of dust collecting pole plate 3cm.Suction pipe 3 has the left and right both sides that two rules seam, 14, two rules seam is distributed in suction pipe one side on the side adjacent to dust collecting pole plate, the centre is a baffle plate 15.The width bottom of bar seam 14 is 6mm, and top is 10mm, and its structure as shown in Figure 3.The wedge-shaped bar seam is in order to guarantee even air draught.Suction pipe 3 upper ends adopt welding to be connected with hitch, and per two adjacent suction pipes 3 are connected short tube 4 connections with one, and each connects short tube 4 and draws airduct 5 by one respectively, pass deduster housing 13 and manage 6 and be connected with gathering.Blower fan input trunk line 7 one ends with gather pipe 6 and be connected, the other end is connected with blower fan 8 inlets, blower fan is exported trunk line 12 1 ends and is exported with blower fan 8 and be connected, the other end is connected with inlet box 9, the external circulating system of formation deduster, its annexation is as shown in Figure 1.
Above-mentioned electric cleaner is operation like this, after containing dust and flowing to the dust suction space, dust is forced to charged, powder dust particle after charged moves and sedimentation to dust collecting pole plate under electrostatic force, and on pole plate, form dust layer gradually, after dust layer reaches certain thickness, by vibration dust-cleaning mechanism, vibration dust-cleaning is restored the dust collection performance of electric cleaner; Simultaneously before vibration dust-cleaning, start the blower fan 8 in the external circulating system of deduster, the suction pipe bar stitches 14 suction inlet wind speed and is controlled to be 3m/s, system's total blast volume be electric cleaner handle total blast volume 10%.When above-mentioned vibration dust-cleaning mechanism carries out vibration dust-cleaning, dust sedimentation in ash bucket 11 in the form of sheets on the pole plate, fly upward again with air-flow and be dispergated dust, last air-flow enters the 3rd electric field, and the part dust is arranged by the terminal suction pipes 3 that are provided with of dust collecting pole plate 2 and then enter external circulating system, air-flow is earlier through connecting short tube 4, by drawing airduct 5, drawing outside the housing 13, enter and gather pipe 6, enter blower fan 8 by blower fan input trunk line 7 again, and send into the inlet box 9 of deduster by blower fan output trunk line 12.After this circulating current enters electric cleaner, be cleaned again, remove.So, the dust that is flown upward again is by circularly purifying, removing constantly.Thereby improved the dust-collecting efficiency of electric cleaner greatly.Present case the experiment proved that the electric precipitation transmitance of electric cleaner reduces 60%.
Example 2: the electric cleaner structure is identical with example 1, and different is that 2 electric fields are arranged, as shown in Figure 1.Suction pipe 3 is bars such as equal section not seam width structure, as shown in Figure 4.Bar seam width is chosen 8mm, and its section width is greater than the windproof ditch width of dust collecting pole plate 2cm.The suction pipe bar stitches 14 suction inlet wind speed and is controlled to be 2m/s, and system's total blast volume is 5% of an electric cleaner processing total blast volume.The electric precipitation transmitance that finally experiment showed, electric cleaner is 50%.
Claims (5)
1, a kind of electric cleaner that has external circulating system, comprise housing, inlet box, going out gas tank, is electric field between two tanks, and each electric field space of gathering dust is equipped with corona discharge electrode, dust collecting pole plate, vibration dust-cleaning mechanism, airflow uniform distribution plate, hitch, ash bucket, it is characterized in that the end of respectively arranging of the dust collecting pole plate of last electric field is provided with suction pipe, the length of suction pipe and the equal in length of dust collecting pole plate, suction pipe is that equal section becomes bar seam width structure or bar seam width structure such as equal section not, every adjacent two suction pipes are connected short tube and connect with one, connect short tube by drawing airduct and gathering pipe and be connected, and gather to manage and import trunk line one end with blower fan and be connected, the blower fan input trunk line other end is connected with the blower fan import, blower fan output trunk line one end is connected with the blower fan outlet, and the other end is connected with inlet box, forms the external circulating system of electric cleaner.
2,, it is characterized in that the suction pipe section width is greater than the windproof ditch width of dust collecting pole plate 2～3cm according to the described electric cleaner that has external circulating system of claim 1.
3,, it is characterized in that suction pipe has two rules seam on the side adjacent to dust collecting pole plate according to the described electric cleaner that has external circulating system of claim 1.
4, according to the described electric cleaner that has external circulating system of claim 3, two rules seam that it is characterized in that being opened on the suction pipe side is distributed in left and right both sides, and the centre is a baffle plate.
5, according to the described application process that has the electric cleaner of external circulating system of claim 1, it is characterized in that starting the electric cleaner external circulating system and before the pole plate vibration dust-cleaning, start, close behind the deashing, perhaps often open at the electric cleaner run duration; The processing total blast volume of external circulating system is 5～10% of an electric cleaner processing total blast volume, and makes the wind speed 〉=2m/s of the bar seam suction inlet of suction pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100505040A CN100435968C (en) | 2004-09-24 | 2004-09-24 | Electric dust remover with external circulation system and its using method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100505040A CN100435968C (en) | 2004-09-24 | 2004-09-24 | Electric dust remover with external circulation system and its using method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1586727A CN1586727A (en) | 2005-03-02 |
| CN100435968C true CN100435968C (en) | 2008-11-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CNB2004100505040A Expired - Fee Related CN100435968C (en) | 2004-09-24 | 2004-09-24 | Electric dust remover with external circulation system and its using method |
Country Status (1)
| Country | Link |
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| CN (1) | CN100435968C (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101862705B (en) * | 2010-06-22 | 2012-10-10 | 浙江工商大学 | Mixed-flow electric dust collector |
| CN102327812A (en) * | 2010-07-12 | 2012-01-25 | 江苏阜升环保集团有限公司 | Multilayer brattice high-voltage electrostatic precipitator |
| CN102600977A (en) * | 2012-03-23 | 2012-07-25 | 武汉景弘环保科技股份有限公司 | Mobile polar plate negative-pressure cleaning device |
| 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 |
| CN104668095A (en) * | 2013-11-28 | 2015-06-03 | 解标 | Effect-raising transformation method for electric dust remover with cathode side rapping |
| CN104801421A (en) * | 2015-04-29 | 2015-07-29 | 福建卫东实业股份有限公司 | Efficient and environment-friendly fine dust electric dedusting method and equipment used in same |
| CN105709928A (en) * | 2016-04-14 | 2016-06-29 | 南京佳旺安环境科技有限公司 | High-voltage pulse electrostatic dust collector |
| CN106475226A (en) * | 2016-11-16 | 2017-03-08 | 山东盛华投资有限责任公司 | A kind of method of the reentrainment of dust that elimination causes because of deashing and corresponding electric cleaner device |
| CN108499737B (en) * | 2018-03-28 | 2022-04-01 | 西安建筑科技大学 | Be used for oblique air current circulating device of electrostatic precipitator |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59160556A (en) * | 1983-03-02 | 1984-09-11 | Hitachi Plant Eng & Constr Co Ltd | Connecting and fixing structure of rod and beam for hammering in dust collecting electrode |
| JP2001190984A (en) * | 2000-01-06 | 2001-07-17 | Sumitomo Heavy Ind Ltd | Electric precipitator |
| JP2002253988A (en) * | 2001-03-01 | 2002-09-10 | Sumitomo Heavy Ind Ltd | Electric dust collector |
| CN1415421A (en) * | 2001-10-31 | 2003-05-07 | 中国科学院广州能源研究所 | Electrostatic dust collection method in high speed internal circulation and relevant equipment |
-
2004
- 2004-09-24 CN CNB2004100505040A patent/CN100435968C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59160556A (en) * | 1983-03-02 | 1984-09-11 | Hitachi Plant Eng & Constr Co Ltd | Connecting and fixing structure of rod and beam for hammering in dust collecting electrode |
| JP2001190984A (en) * | 2000-01-06 | 2001-07-17 | Sumitomo Heavy Ind Ltd | Electric precipitator |
| JP2002253988A (en) * | 2001-03-01 | 2002-09-10 | Sumitomo Heavy Ind Ltd | Electric dust collector |
| CN1415421A (en) * | 2001-10-31 | 2003-05-07 | 中国科学院广州能源研究所 | Electrostatic dust collection method in high speed internal circulation and relevant equipment |
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| CN1586727A (en) | 2005-03-02 |
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Granted publication date: 20081126 Termination date: 20100924 |