CN103736604B - A kind of cyclone wet type electrostatic dust collector - Google Patents

A kind of cyclone wet type electrostatic dust collector Download PDF

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Publication number
CN103736604B
CN103736604B CN201310755492.0A CN201310755492A CN103736604B CN 103736604 B CN103736604 B CN 103736604B CN 201310755492 A CN201310755492 A CN 201310755492A CN 103736604 B CN103736604 B CN 103736604B
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China
Prior art keywords
pole plate
water
dust
deashing
dust collecting
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Expired - Fee Related
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CN201310755492.0A
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Chinese (zh)
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CN103736604A (en
Inventor
齐立强
崔少平
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North China Electric Power University
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North China Electric Power University
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Priority to CN201310755492.0A priority Critical patent/CN103736604B/en
Publication of CN103736604A publication Critical patent/CN103736604A/en
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Publication of CN103736604B publication Critical patent/CN103736604B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The present invention relates to a kind of cyclone wet type electrostatic dust collector, its energy gum carries out deep purifying to flue gas before flue gas is discharged into atmospheric environment, guarantees that flue gas emission reaches more harsh standard.Its method is: flue gas tangentially enters on the inside of dust collecting pole plate, is trapped using the double action of centrifugal force and electrostatic force to particulate matter, the drop of wherein different-grain diameter in wet process environment, purification efficiency with higher;Deduster dust collecting pole plate is microcellular structure, and several layers infiltration slit is provided with along case inside, it can guarantee that polar board surface water distribution is completely uniform using dust collecting pole plate microcellular structure capillarity and infiltration slit, and deashing is carried out to the dust for being captured in polar board surface using the gravity of ash removing water film, do not generate reentrainment of dust;Equipped with deashing water treatment system and compressed air blowback system, guarantees the pure of deashing water and prevent pole plate micropore and slit from blocking.

Description

A kind of cyclone wet type electrostatic dust collector
Technical field
The invention belongs to environment protection equipment more particularly to a kind of cyclone wet type electrostatic dust collectors.
Background technique
Cyclone dust collectors be dust particles using air-flow when making rotating motion, in air-flow because the effect by centrifugal force from It is separated in air-flow, to reach gas cleaning purpose.Cyclone dust collectors have structure simple, and occupied area is small, manufacture, peace Fill small investment;Operation, easy maintenance, the pressure loss is medium, and operation, maintenance cost are lower;Operating flexibility is big, and performance stabilization etc. is excellent Point.But it is low for fine dust arresting efficiency, and the processing air quantity of single deduster has certain limitation.Electrostatic precipitator It is that the high field generated using high voltage forces gas partial ionization, and realizes the separation of particle and air-flow using electric field force, reaches The purpose of gas cleaning.Electrostatic precipitator efficiency of dust collection with higher.If design is rationally, can be reached to fine dust To very high efficiency of dust collection.
Currently, the sequencing of existing thermal power plant's environmental protection equipment setting is usually: denitration, dedusting, desulfurization.Flue gas passes through After cleaner, most of particulate matter (most of large-size particles object and a part of fine particle size particulate matter) is captured.However, Commonly used at present is wetting desulfurizing apparatus by limestone-gypsum process.Wet desulphurization equipment can trap a certain amount of fine powder Dirt, but gypsum particle, drop can be inevitably carried again when flue gas is discharged from wet desulphurization equipment.Therefore, collection at large Fine particle (including gypsum particle), fine droplet is disposed in atmosphere.
Summary of the invention
The object of the invention is to deep purifying be carried out to flue gas, in flue gas before flue gas emission is into atmosphere Fine particle, fine droplet are removed, and the pollutant concentration being discharged in atmospheric environment is further decreased.To realize above-mentioned mesh , the present invention adopts the following technical solutions:
A kind of cyclone wet type electrostatic dust collector, main body are tubular type, and flow of flue gas mode is tangential admission single flow, by dedusting Device top enters, lower part discharge.Enclosure interior is provided with tube-type micropore structure dust collecting pole plate along barrel, and micropore pole plate is according to reality Situation is provided with several layers infiltration slit from up to down, to dust collecting pole plate water distribution.It is disposed with vertically inside deduster from top center Downward corona wire.
The deduster exhanst gas outlet is generally connected to air-introduced machine, guarantees the atmosphere negative pressure state inside deduster.
The tube-type micropore structure dust collecting pole plate requires anti-corrosion, characteristic wear-resisting, surface is smooth, and microcellular structure makes It may make deashing water to infiltrate into dedusting area from deashing water cavity with preferable capillarity and water distribution characteristic, and uniform and stable Ground is distributed in dust collecting pole plate surface.In addition to this, dust collecting pole plate material will also have certain mechanical strength and rigidity, Neng Gou The smooth and stable structure on its surface is kept under conditions of cyclone dust collectors inner high speed air-flow.
The deashing water cavity is communicated with the water supply pipe outside shell, conveys deashing water to the region by water supply pipe.
The beneficial effects of the present invention are:
(1) cyclone wet type electrostatic dust collector of the invention is used, there is the spy that gas residence time is long, arresting efficiency is high Point can make particulate matter and drop in flue gas: on the one hand be trapped under the action of whirlwind by dust collector pole;On the one hand in electric field force Under the action of migrate to dust collector pole and be captured.By two kinds of capture mechanisms the particulate matter of different-grain diameter and drop can be had Effect trapping, the purification of depth can be obtained before flue gas emission to atmosphere, is further ensured that the quality of flue gas emission.
(2) flue gas temperature after desulfurization process has reached reduced levels, be more advantageous to fine particle in flue gas, The cohesion of drop, sour gas.Therefore, cyclone wet type electrostatic dust collector of the invention also meets the operation of low temperature electric precipitator Condition can reach higher gas cleaning effect.
(3) present invention use tube-type micropore dust collecting pole plate, and according to pole plate height be provided on pole plate several layers infiltration it is narrow Seam.The microcellular structure of plate material itself makes pole plate have good capillarity.Seeping water slit and infiltration micropore can will be clear Buck is uniformly distributed in dust collecting pole plate surface, and ash-removal effect is good, not will form deashing dead angle on pole plate, not will form influence moisture film Complete dust block, because without corona wire occurs to dust stratification electric discharge phenomena, it is ensured that powered stable, it is ensured that the normal work of electric precipitator Make.
(4) the pole plate water distribution in the present invention is is realized by micropore on pole plate and slit, and utilize microcellular structure Capillarity achieve the purpose that water distribution uniformity, can effectively reduce keep uniform water film institute water consumption.
Detailed description of the invention
Fig. 1 is cyclone wet type electrostatic dust collector structural schematic diagram;
Fig. 2 is tubular microcellular structure dust collecting pole plate cross-sectional view.
Wherein, 1 insulator;2 corona wires;3 shell of dust remover;4 tubular microcellular structure dust collecting pole plates;5 smoke inlets;6 cigarettes Gas outlet;7 deashing water are evenly distributed with area;8 dedusting areas;9 mortar buckets;10 mortar reuse pipelines;11 main-supply roads;12 deashing pools supply Water lines;13 four way valves;14 ground lines;15 infiltration micropores;16 infiltration slits.
Specific embodiment
Embodiment: as shown in Figure 1, mainly having: 2 corona wires, 3 shell of dust remover, 4 tubular microcellular structure dust collecting pole plates, 5 cigarettes Gas entrance, 6 exhanst gas outlets, 7 deashing water are evenly distributed with area, 8 dedusting areas, 9 mortar buckets, 10 mortar reuse pipelines, 11 main-supply roads, 12 Deashing pool water supply pipe, which is characterized in that 2 Self-duster inner top center of corona wire is disposed vertically downward;Tubular micropore knot Structure dust collecting pole plate 4 is arranged in inside shell 3, and deashing water will be divided into inside deduster and is evenly distributed with area 7 and the region of dedusting area 8 two, and Closed connection is formed with deduster project 3, smoke inlet 5, exhanst gas outlet 6;Smoke inlet 5 gathers dust with tubular microcellular structure 4 arranged tangential of pole plate, it is tangent with 4 inside of tubular microcellular structure dust collecting pole plate when flue gas enters dedusting area 8 from smoke inlet 5.
Deashing water used in deduster is provided by deashing water process and feed system, flows to deashing water by main-supply road 11 Area's water supply pipe 12 finally enters deashing water and is evenly distributed with area 7, supplies deashing water to 4 surface of tubular microcellular structure dust collecting pole plate.Deashing Pool water supply pipe 12 is connected with shell of dust remover 3, is evenly distributed with area 7 with clear water and communicates.4 surface of tubular microcellular structure dust collecting pole plate The completion of deashing water is pooled to mortar bucket 9 after gathering dust, mortar flows into the supply of deashing water and feed system by mortar reuse pipeline 10. Deashing water process is first filtered mortar with feed system, so as not to deashing water again reuse when particle therein block tubular Infiltration micropore 15 and infiltration slit 16 on microcellular structure dust collecting pole plate 4.
In deduster maintenance down, deashing water is generally evenly distributed with deashing water in area and is emptied, four-way can be passed through at this time Valve 13 closes main-supply road 11, while deashing pool water supply pipe 12 and compressed air purge system being connected, and passes through Strength purges tubular microcellular structure dust collecting pole plate 4, to remove for being blocked in infiltration micropore 15 and seeping water on slit 16 Grain object or other impurities.

Claims (1)

1. a kind of cyclone wet type electrostatic dust collector, mainly by corona wire, shell of dust remover, the tubular type band micropore with hollow chamber And dust collecting pole plate, smoke inlet, exhanst gas outlet, mortar bucket, the mortar reuse pipe with dust collecting pole plate arranged tangential of infiltration slit Road, deashing water water supply pipe, clear ash water recycling and feed system, compressed air purge system composition, characterized in that in wet type ring Pollutant in flue gas is trapped using cyclone centrifugal power and electrostatic force simultaneously under border, using the tubular type band for having hollow chamber The dust collecting pole plate of micropore and the slit that seeps water, the chamber among dust collecting pole plate and sealing shell are deashing water water chamber and compressed air It is blown chamber;One connect with shell of dust remover top in deashing water water supply pipe, and another connect with shell of dust remover middle part;Institute Stating has permeable micropore on dust collecting pole plate, and offers 2~3 layers of infiltration slit above according to pole plate height, utilizes dedusting Device run when internal negative pressure and water system pressure difference and dust collector pole on micropore capillarity, guarantee deashing water in pole plate table Face is uniformly distributed;Particulate matter and drop in flue gas are trapped under the action of whirlwind and electric field force by dust collecting pole plate, and in deashing Deashing is carried out to the dust for being captured in polar board surface under the gravity of moisture film.
CN201310755492.0A 2013-12-20 2013-12-20 A kind of cyclone wet type electrostatic dust collector Expired - Fee Related CN103736604B (en)

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CN201310755492.0A CN103736604B (en) 2013-12-20 2013-12-20 A kind of cyclone wet type electrostatic dust collector

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Application Number Priority Date Filing Date Title
CN201310755492.0A CN103736604B (en) 2013-12-20 2013-12-20 A kind of cyclone wet type electrostatic dust collector

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CN103736604B true CN103736604B (en) 2019-01-01

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Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104056720B (en) * 2014-05-27 2017-10-10 华北电力大学(保定) A kind of compound type dust remover
CN104492603B (en) * 2014-12-13 2018-01-05 华北电力大学(保定) Match somebody with somebody pattern and purge mode in a kind of cermet electric cleaner pole
GB2535528A (en) * 2015-02-23 2016-08-24 Edwards Ltd Apparatus for treating gas
CN104741278B (en) * 2015-04-07 2017-04-26 深圳爱浦发空气净化科技有限公司 High-pressure electrostatic water mist generating device
CN104923403B (en) * 2015-06-29 2018-03-16 浙江大学 The devices and methods therefor of sound wave combined electric field action removing fine particle

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Publication number Priority date Publication date Assignee Title
CN2656013Y (en) * 2003-11-11 2004-11-17 哈尔滨理工大学 Tangent flow reverse rotating type electric cyclonic dust collector
CN102527515A (en) * 2010-12-31 2012-07-04 杰智环境科技股份有限公司 Wet static cyclone dust collector
CN103272697A (en) * 2013-05-06 2013-09-04 清华大学 Chambered structure dust-collecting pole plate for wet-type electrostatic dust collection
CN103341409A (en) * 2013-06-28 2013-10-09 中节环立为(武汉)能源技术有限公司 Dust-collecting pole plate of wet water-film electrostatic precipitator

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101253456B1 (en) * 2012-08-20 2013-04-11 한전산업개발 주식회사 Wet electrostatic precipitator and the plant's dust removal equipment including coal by using cyclone

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2656013Y (en) * 2003-11-11 2004-11-17 哈尔滨理工大学 Tangent flow reverse rotating type electric cyclonic dust collector
CN102527515A (en) * 2010-12-31 2012-07-04 杰智环境科技股份有限公司 Wet static cyclone dust collector
CN103272697A (en) * 2013-05-06 2013-09-04 清华大学 Chambered structure dust-collecting pole plate for wet-type electrostatic dust collection
CN103341409A (en) * 2013-06-28 2013-10-09 中节环立为(武汉)能源技术有限公司 Dust-collecting pole plate of wet water-film electrostatic precipitator

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