CN102872974A - Electrostatic dust collector used in converter gas dry dust collection system - Google Patents

Electrostatic dust collector used in converter gas dry dust collection system Download PDF

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Publication number
CN102872974A
CN102872974A CN2012103460065A CN201210346006A CN102872974A CN 102872974 A CN102872974 A CN 102872974A CN 2012103460065 A CN2012103460065 A CN 2012103460065A CN 201210346006 A CN201210346006 A CN 201210346006A CN 102872974 A CN102872974 A CN 102872974A
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CN
China
Prior art keywords
electrostatic precipitator
dust collection
electrostatic dust
converter gas
gas
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN2012103460065A
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Chinese (zh)
Inventor
盖东兴
胡建亮
周全
黄永红
叶理德
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Wisdri Engineering and Research Incorporation Ltd
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Wisdri Engineering and Research Incorporation Ltd
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Publication date
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Priority to CN2012103460065A priority Critical patent/CN102872974A/en
Publication of CN102872974A publication Critical patent/CN102872974A/en
Pending legal-status Critical Current

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Abstract

The invention discloses an electrostatic dust collector used in a converter gas dry dust collection system. The electrostatic dust collector comprises an electrostatic dust collection device, anion generators and gas switching valves, wherein the anion generators are arranged at the front end of the electrostatic dust collection device and connected with the gas switching valves; and a plurality of gas flow distribution plates which are connected in series, and a plurality of horizontally parallel cathode plates and anode plates are arranged in the electrostatic dust collection device. By the electrostatic dust collector in the converter gas dry dust collection system, the phenomenon of discharge between the anode plates and the cathode plates in the electrostatic dust collection device is avoided, and the damage of large explosion to the electrostatic dust collection device is avoided, so that the safety of the dry dust collection system is improved.

Description

The electrostatic precipitator that is used for converter gas dry-dedusting system
Technical field
The present invention relates to a kind of electrostatic precipitator for converter gas dry-dedusting system.
Background technology
The electrostatic precipitator dust-cleaning principle: the dust of the 60-70% in the coal gas is removed in electric cleaner, and electric cleaner can be processed coal gas to 15mg/Nm usually 3The course of work of electric cleaner mainly is divided into following a few step:
Apply dc high voltage between polar curve and dust collecting electrode, make polar curve generation corona discharge, gas ionization generates a large amount of free electron and cation.Cation is attracted to lose in the past electric charge by corona discharge electrode (supposing electronegative) immediately near polar curve the so-called corona zone.Free electron and the anion that forms immediately be then because being subjected to the ordering about to dust collecting electrode (positive pole) movement of electric field force, and be filled to most spaces of two interpolars.When dust-contained airflow passed through electric field space, free electron, anion and dust collision were also adhered on it, have just realized the charged of dust.
Electrostatic precipitator is comprised of a columniform metal shell, and electric field all is comprised of parallel anode and minus plate, will form high voltage electric field between ground connection anode and the negative electrode in the time of work.One cover vibrated system is arranged in each electric field.Each collecting electrode has a beater, and the beater that these can free-falling is installed on the common axle, when axle rotates, beater can the free-falling rapping on the chopping block of each pole plate, thereby fall dust on the collecting polar plate of earthquake periodically.Each cathode line has a with it beater of correspondence.The beater axle is positioned at the top of deduster, by motor-driven cam so that beater in suitable height free-falling rapping cathode line.The electrostatic precipitator high voltage electric field is provided by silicon controlled rectifier transformer independently.In addition, deduster inside also has airflow uniform distribution grid and vibrated system thereof, is distributed in 6-8 the explosion venting valve at deduster two ends, scrapes ash system and lubricating system thereof etc., and the deduster more complicated also is the core component of whole dry-dedusting system.Its main technical requirements is: 1. the excellent utmost point is joined form.Because the dustiness of coal gas of converter is higher, when entering deduster, is generally 40~60g/Nm 3, and the concentration of emission of deduster outlet requires less than 10mg/Nm 3, this just requires dust removal device that very high efficiency of dust collection is arranged, and the principal element of efficiency of dust collection height just depends on that its utmost point sets the reasonability of meter.2. good safety anti-explosive performance.Because coal gas of converter belongs to poisonous inflammable and explosive medium, very high requirement has been proposed for intensity, sealing and the safe venting of dust explosion of equipment.3. the fan-shaped apparatus for ash of scraping of deduster inside.It is a very important part in the deduster that apparatus for ash is scraped in electric cleaner inside, and whether remover ash discharge dust is smooth, can have influence on the normal operation of whole system.4. high temperature resistant chain-linked conveyer.Because this cleaner efficiency of dust collection is high, so there is a large amount of ashes immediately to transfer out.
Summary of the invention
In view of this, the technical problem to be solved in the present invention is to provide a kind of electrostatic precipitator for converter gas dry-dedusting system, in electric discharge phenomena do not occur between the anode established and the minus plate.
For solving the problems of the technologies described above, technical scheme of the present invention is achieved in that a kind of electrostatic precipitator for converter gas dry-dedusting system, described electrostatic precipitator comprises electrostatic precipitator, anion generator and gas transfer valve, the leading section of electrostatic precipitator is provided with anion generator, be connected with this gas transfer valve on this anion generator, be furnished with the airflow-distribution board that a plurality of series connection arrange in the electrostatic precipitator, and a plurality of parallel negative electrode and positive plate.
Further, described electrostatic precipitator is the cavity of a hollow, and the middle part is cylindrical surface, and two ends are the truncated cone-shaped surface, and described negative electrode and positive plate are positioned at the middle part, and described airflow-distribution board is positioned at both ends.
Further, negative electrode and positive plate are broken line type.
Further, described electrostatic precipitator also is provided with vibrated system.
Technique effect of the present invention is: between electrostatic precipitator inner anode of the present invention and the minus plate electric discharge phenomena do not occur, electrostatic precipitator in converter gas dry-dedusting system, avoid huge explosion to the harm of electrostatic precipitator, thereby improve the security of dry-dedusting system, also can save the space.
Description of drawings
Fig. 1 is the structural representation that the present invention is used for the electrostatic precipitator of converter gas dry-dedusting system;
Fig. 2 is a plurality of deduster straight line syndeton schematic diagrames shown in Figure 1;
Fig. 3 is a plurality of deduster broken line syndeton schematic diagrames shown in Figure 1.
The specific embodiment
The converter gas dry-dedusting system critical piece is comprised of converter, gasification cooling flue, steamdrum, gas-liquid two-phase spray gun, devaporizer, cinder gathering system and electrostatic precipitator etc.Gasification cooling flue mainly is to reduce gas temperature to produce saturated vapor, and the process steamdrum separates and collects, and is the afterheat of converter gas retracting device; Devaporizer passes through gas-liquid two-phase spray gun water spray reduction gas temperature, and passes through the thick dedusting of cinder gathering system of devaporizer bottom connection to the dielectric constant of cinder storehouse and adjusting dust, and realizes smart dedusting etc. by the electrostatic precipitator system.
As shown in Figure 1, be used for the embodiment of the electrostatic precipitator of converter gas dry-dedusting system for the present invention, but concrete shape and structure do not limit this embodiment.Electrostatic precipitator mainly is divided into electrostatic precipitator 9, anion generator 8, gas transfer valve, be connected with this gas transfer valve on the anion generator 8, be furnished with the airflow-distribution board 22 that a plurality of series connection arrange in the electrostatic precipitator 9, and parallel negative electrode and positive plate 23.Electrostatic precipitator 9 is the cavity of a hollow, and the middle part is cylindrical surface, and two ends are the truncated cone-shaped surface, and negative electrode and positive plate 23 are positioned at the middle part, and airflow-distribution board 22 is positioned at both ends.
Broken line type negative electrode and positive plate 23 that a plurality of files of electrostatic precipitator 9 interior layouts are parallel, and the airflow-distribution board 22 of a plurality of series connection settings, add that at minus plate and positive plate 23 strong voltage forms uniform electric field, charged dust constantly deposits on positive plate, by cycle rapping control device dust is shaken, guarantee the cleaning of anode and minus plate 23, the shaking cycle of cathode-anode plate is different, respectively control.Between these electrostatic precipitator 9 inner anodes and the minus plate 23 electric discharge phenomena do not occur, so the installation requirement of pole plate is greatly reduced.
Anion generator 8 is with gas ionization by electrion, control respectively by purified gas pipeline 24, nitrogen pipeline 25, compressed air line 26 and to pass into purified gas, nitrogen and air, cation after the ionization imports the earth, and anion imports in the coal gas, the quantity of anion is huge on electrostatic precipitator 9 efficiency of dust collections impacts, therefore need anion generator 8 to have enough power or with a plurality of.
Steelmaking process is periodic process, thus electrostatic precipitator 9 periodically by air and coal gas of converter, anion generator 8, gas transfer valve and electrostatic precipitator 9 have control system automatically to control, and control system and converter state are chain.Converter is in non-smelting during the stage, and anion generator 8 is in low-voltage and produces a small amount of anion, and the shaking cycle of electrostatic precipitator 9 rapping control device is long, and this moment, what pass into anion generator 8 was air; Converter is in smelts interimly, and anion generator is in high voltage, and passes into nitrogen in the non-coal-gas recovering phase, and the coal-gas recovering phase in smelting process passes into clean coal gas of converter, and the shaking cycle of electrostatic precipitator 9 rapping control device is short in blowing period.
Such as Fig. 2-shown in Figure 3, make dust concentration reach 15mg/Nm 3Below, need 3-4 electrostatic precipitator series connection, and need arrange anion generator before each electrostatic precipitator, can select straight line to be connected with broken line, to guarantee the dust removing effects of electrostatic precipitator.
The above is preferred embodiment of the present invention only, is not for limiting protection scope of the present invention.

Claims (4)

1. electrostatic precipitator that is used for converter gas dry-dedusting system, it is characterized in that, described electrostatic precipitator comprises electrostatic precipitator, anion generator and gas transfer valve, the leading section of electrostatic precipitator is provided with anion generator, be connected with this gas transfer valve on this anion generator, be furnished with the airflow-distribution board that a plurality of series connection arrange in the electrostatic precipitator, and the negative electrode of a plurality of horizontal parallel and positive plate.
2. the electrostatic precipitator for converter gas dry-dedusting system as claimed in claim 1, it is characterized in that, described electrostatic precipitator is the cavity of a hollow, the middle part is cylindrical surface, two ends are the truncated cone-shaped surface, described negative electrode and positive plate are positioned at the middle part, and described airflow-distribution board is positioned at both ends.
3. the electrostatic precipitator for converter gas dry-dedusting system as claimed in claim 1 or 2 is characterized in that, negative electrode and positive plate are broken line type.
4. the electrostatic precipitator for converter gas dry-dedusting system as claimed in claim 1 is characterized in that, described electrostatic precipitator also is provided with vibrated system.
CN2012103460065A 2012-09-18 2012-09-18 Electrostatic dust collector used in converter gas dry dust collection system Pending CN102872974A (en)

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CN102872974A true CN102872974A (en) 2013-01-16

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103184305A (en) * 2013-03-13 2013-07-03 河北钢铁股份有限公司承德分公司 Explosion-proof control method adopting electric precipitation for vanadium extraction in converter
CN103447151A (en) * 2013-08-29 2013-12-18 南京龙源环保有限公司 Compound type electric demister as well as process and use thereof
CN103721516A (en) * 2014-01-03 2014-04-16 常州市伟泰电子科技有限公司 Ionization type air purifier
CN104190543A (en) * 2014-08-20 2014-12-10 浙江天蓝环保技术股份有限公司 Wet-type electric precipitator and electric precipitation desulfurization device comprising same

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CN101757980A (en) * 2009-12-31 2010-06-30 泰兴市电除尘设备厂 Graded efficient electric precipitator
CN101869872A (en) * 2010-05-17 2010-10-27 华北电力大学 Bipolar charge reinforced fine particle aggregation device
CN102274793A (en) * 2011-05-11 2011-12-14 中冶南方工程技术有限公司 Electrostatic precipitator with additional anion generators
CN102302979A (en) * 2011-08-12 2012-01-04 杭州天明环保工程有限公司 Electrostatic dust collector
CN203342938U (en) * 2012-09-18 2013-12-18 中冶南方工程技术有限公司 Electrostatic dust collector for converter gas dry dedusting system

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Publication number Priority date Publication date Assignee Title
CN101757980A (en) * 2009-12-31 2010-06-30 泰兴市电除尘设备厂 Graded efficient electric precipitator
CN101869872A (en) * 2010-05-17 2010-10-27 华北电力大学 Bipolar charge reinforced fine particle aggregation device
CN102274793A (en) * 2011-05-11 2011-12-14 中冶南方工程技术有限公司 Electrostatic precipitator with additional anion generators
CN102302979A (en) * 2011-08-12 2012-01-04 杭州天明环保工程有限公司 Electrostatic dust collector
CN203342938U (en) * 2012-09-18 2013-12-18 中冶南方工程技术有限公司 Electrostatic dust collector for converter gas dry dedusting system

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103184305A (en) * 2013-03-13 2013-07-03 河北钢铁股份有限公司承德分公司 Explosion-proof control method adopting electric precipitation for vanadium extraction in converter
CN103447151A (en) * 2013-08-29 2013-12-18 南京龙源环保有限公司 Compound type electric demister as well as process and use thereof
CN103721516A (en) * 2014-01-03 2014-04-16 常州市伟泰电子科技有限公司 Ionization type air purifier
CN103721516B (en) * 2014-01-03 2016-01-27 海柯蓝(上海)环保科技有限公司 ionization type air purifier
CN104190543A (en) * 2014-08-20 2014-12-10 浙江天蓝环保技术股份有限公司 Wet-type electric precipitator and electric precipitation desulfurization device comprising same
CN104190543B (en) * 2014-08-20 2016-09-07 浙江天蓝环保技术股份有限公司 A kind of wet electrical dust precipitator and comprise the electric precipitation desulfurizer of this wet electrical dust precipitator

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Application publication date: 20130116