CN1291774C - Method for purifying smoke and dust and equipment thereof - Google Patents

Method for purifying smoke and dust and equipment thereof Download PDF

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Publication number
CN1291774C
CN1291774C CN 200410023117 CN200410023117A CN1291774C CN 1291774 C CN1291774 C CN 1291774C CN 200410023117 CN200410023117 CN 200410023117 CN 200410023117 A CN200410023117 A CN 200410023117A CN 1291774 C CN1291774 C CN 1291774C
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China
Prior art keywords
dust
particle
corona
drop
particles
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Expired - Fee Related
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CN 200410023117
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Chinese (zh)
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CN1593718A (en
Inventor
王长皓
王鹤
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Individual
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Individual
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Abstract

The present invention relates to a method and an apparatus for purifying smoke and dust. Sprinkling liquid drops or particle flows are led into an apparatus or a system, corona electric fields with opposite polarities are respectively arranged on the path of a polluted airflow and the path of the liquid drops or the particle flows, smoke, dust particles and the liquid drops or the particle flows are respectively loaded with positive charge and negative charge when passing through the corona electric fields and then are attracted and crashed with each other, polluted particles are absorbed on the liquid drops or the particles of the particle flows and are settled along with the liquid drops or the particles of the particle flows, and clean air is separated from dust flows and then is discharged. Through the general treatment, the polluted particles are separated from the liquid drops or the particles of the particle flows so that the liquid drops or the particles of the particle flows are circularly used. The present invention has the advantages of scientific principle, reasonable design, high purification efficiency, small apparatus volume and low cost and is an environmental protection method and an apparatus with economy, application, high efficiency and good technical performance.

Description

The purification method of flue dust, dust and equipment
Technical field
The present invention relates to a kind of flue dust in the field of environment protection, the purification method and the equipment of dust.
Background technology
At present, most effective in the purification method of various flue dust and dust with the electrostatic depuration method, move most economical.But the cleaning equipment of various electrostatic methods all is that the different electrode of dependence form removes to adsorb contamination particle, and this has just fundamentally restricted the application and the development of electrostatic depuration method.
(1) purify owing to relying on electrode to adsorb, limited by the migration velocity of electrostatic field, dust-contained airflow speed can only be very low, generally is no more than 2M/s, and the volume of cleaning equipment and floor space are increased, and cost significantly improves, so that a lot of occasions can't be used.
(2) because particle accumulate absorption on pole plate, the thickness of deposits on the pole plate constantly increases, electric-field intensity reduction even disappearance make the contamination particle can't be charged, can't be adsorbed on the pole plate, cause purifying rate sharply to descend, even entirely ineffective.For this reason, people once designed the method and the mechanism of various cleaning pole plates, but effect is little, and what have causes secondary pollution, and what have has introduced new pollution especially, and what have then causes the pole plate distortion and damage, and causes equipment normally not move, even scraps.
Summary of the invention
Technical problem to be solved by this invention is: solve the three big problems that existing electrostatic depuration method exists, 1. the volume of equipment and floor space are quite big, arrive the condition that some unit does not have use greatly; 2. electric-field intensity and purifying rate sharply descend, and very short time promptly lost efficacy most; 3. still do not have good way to clean pole plate at present,, can not work though cause a lot of equipment on the operating position.The problems referred to above reason is a lot, is adsorbed on the electrode by electrostatic field but main cause is a contamination particle.Purpose of the present invention is intended to not rely on the suction-operated of electrode, and the problems referred to above are fundamentally solved: 1. be not subjected to the influence of electric field migration velocity, dust-contained airflow speed can improve, and the volume of equipment and floor space can reduce naturally; 2. do not adsorb grit on the electrode basically, the purifying rate of fundamentally having stopped to occur because of electrode fouling descends and lost efficacy; 3. do not need frequent cleaning, and clean easily, therefore can keep high purifying rate for a long time, the purifying rate of equipment is reached more than 99%.
The technical solution used in the present invention is: introduce spray droplet or particle flux to equipment or system, and on the path of dust-contained airflow and spray droplet or particle flux, opposite polarity corona field is set respectively, when dust-contained airflow and spray droplet or particle flux process corona field, opposite polarity electric charge on the difference lotus, they attract each other, collide then, flue dust, dust granules are adsorbed on drop or the particle flux particle and sedimentation thereupon, contamination particle is separated from air-flow, clean air device for transferring or system.
In the technique scheme, flue dust, dust granules are adsorbed in the precipitum on drop or the particle flux particle, through generally processing, and contamination particle and drop or particle flux separate particles, drop or particle flux particle enter and recycle.
In the technique scheme, the corona field that described direction is opposite is that two places or many places are discrete, or merges into a place.When being combined into a place, the different parts of using electrode is as corona electrode.
This flue dust, the cleaning equipment of dust, its architectural feature is: housing is provided with gas stream of pollution inlet and clean air outlet and drop or particle flux inlet and precipitum outlet, on above-mentioned gas stream of pollution and drop or particle flux path or the porch opposite polarity corona field is housed respectively, each corona field all has corona electrode and non-corona electrode, described electrode all connects high-voltage DC power supply, when contamination particle and drop or particle flux particle process corona field, opposite polarity electric charge on the difference lotus, then, the two attracts each other, collision, contamination particle is adsorbed on drop or the particle flux particle and sedimentation thereupon, clean air is separated from contaminated air and is discharged from, handle through general, contamination particle and drop or particle flux separate particles, drop or particle flux particle enter and recycle.
In above-mentioned flue dust, the dust purification device, opposite polarity corona field comprises just dizzy electric field and negative dizzy electric field.
In above-mentioned flue dust, the dust purification device, the corona field that both direction is opposite connects same high-voltage DC power supply, perhaps is connected in different high-voltage DC power supplies.
When corona electrode was negative high voltage, gas generation ionization in the air produced a large amount of anions, and these anions constantly clash into contamination particle under effect of electric field, make negative electrical charge on its lotus; Otherwise, when corona electrode is positive high voltage, positive charge on the contamination particle lotus.Equally, can be by corona electrode by drop or particle flux charge positive charge or negative electrical charge.Thereby, can make the positive opposite electric charge of elecrtonegativity on drop or particle flux and the contamination particle lotus by this method, and make it adsorb the back sinking mutually, clean air is separated from gas stream of pollution, reaches the purpose of purification.
The present invention has the following advantages and effect.
1, owing to do not rely on the absorption of pole plate in the electrostatic field, so be not subjected to the influence of electric field migration velocity, dust-contained airflow speed can improve, and the volume of equipment can reduce, and range of application is wider, reduces cost cost saving;
2, contamination particle is to be adsorbed in drop or particle flux particle and sedimentation thereupon, and contamination particle can separate by simple method with drop or particle flux particle, the consequence that the purifying rate of fundamentally having stopped to cause because of electrode fouling sharply descends and lost efficacy, thus the problem that present much smoke purifying equipments of units perform practically no function solved.
3, method and apparatus of the present invention can be widely used in the environmental pollution improvement in industrial production such as boiler, kiln, cooking apparatus, drying plant, cement plant, chemical plant and the people's daily life.
4, the present invention novel, reasonable in design, simple in structure, implement easily, principle science, technical performance advanced person.
Description of drawings
Fig. 1 is the inventive method principle schematic
Fig. 2 is the inventive method principle schematic example
Fig. 3 is the embodiment of the invention 1 schematic diagram
Fig. 4 is the embodiment of the invention 2 schematic diagrames
The specific embodiment
The accompanying drawing marking explanation
1, housing
2, cleaned air outlet
3, woven hose
4, nozzle
5, contaminated air inlet
6, collecting tank
7, electrode
8, drop or particle flux inlet
9, precipitum outlet
Referring to Fig. 1, Fig. 2, the inventive method for to the housing 1 of equipment or system in, introduce spray droplet or diameter greatly, be easy to charged, as to be easy to sedimentation or separation particle flux, if adopt spray droplet then can spray by woven hose 3 and nozzle 4, if as particle flux, then establish inlet in addition and introduce with solid particle.On the path of gas stream of pollution and drop or particle flux or the porch opposite polarity corona field is set respectively, two opposite polarity corona fields can be combined into a place and set up, and also can be divided into two places or many places are set up at different parts.Fig. 1 sets up for two opposite corona fields of direction are combined into a place; Fig. 2 then is that two corona fields divide two different parts to set up, and one is the top in equipment, and another is built up in the porch of flue dust and dust.When flue dust, dust granules and drop or particle flux process corona field, the opposite electric charge of positive-negative polarity on the difference lotus, make them attract each other, collide then, contamination particle is adsorbed on drop or the particle flux and sedimentation thereupon, and the clean air after purifying is separated from contaminated air and is discharged from.
Referring to Fig. 3, contaminated air enters housing 1 from contaminated air inlet 5 under the effect of blower fan, and by woven hose 3, nozzle 4 sprays in housing 1 liquid under the effect of pump.In the process that they enter, opposite polarity electric charge on the lotus in corona field respectively, then, attract each other, collide, contamination particle is adsorbed in drop and is sunken in the collecting tank 6 up and down or the bottom, and cleaned air is separated from contaminated air, discharges from cleaned air outlet 2 by blower fan.Meanwhile, the contaminated liquid in the collecting tank 6 is carried liquid to woven hose 3 and nozzle 4 by filtering the back circularly by pump; If with other solid particle particle fluxes, then after otherwise processed, recycle.
What more than say is the course of work of embodiment Fig. 3, and the difference of Fig. 4 and Fig. 3 is that the electric charge field of dust-contained airflow is located at air-polluting inlet 5 places, and the electric charge field of drop is located at housing top, and corona field is fitted together unlike Fig. 3.But principle is one, and contamination particle also is the opposite electric charge of positive-negative polarity on the difference lotus with drop, attracts each other then, and contamination particle is adsorbed in drop and is sunken in the collecting tank 6 up and down or bottoms.
Can also see by Fig. 3, Fig. 4, make the charged electrode of dirt stream with make the charged electrode of drop can attach together in, also can separate from two places or many places.Corona electrode and non-corona electrode can be formed on the same electrode, and the part that just produces corona must be the minimum part of radius of curvature, certainly, can also separately make.Should be formed on the same electrode actually, still separately, obviously fixed according to designing arrangement.Above-mentioned non-corona electrode is meant the electrode with the corresponding installation of corona electrode, also claims collecting electrode in the prior art.

Claims (5)

1. the purification method of a flue dust, dust, it is characterized in that: introduce drop or particle flux to equipment or system, and on the path of gas stream of pollution and drop or particle flux, opposite polarity corona field is set respectively, when contamination particle and drop or particle flux process corona field, positive and negative charge on the difference lotus, they attract each other, collide, and contamination particle is adsorbed on drop or the particle flux particle and sinks thereupon, and clean air is then separated discharge from contaminated air.
2. the purification method of flue dust according to claim 1, dust is characterized in that described opposite polarity corona field is that two places or many places are discrete, or merges into a place.
3. the cleaning equipment of a flue dust, dust is characterized in that housing is provided with gas stream of pollution inlet and clean air outlet, and drop or particle flux inlet and precipitum export; Two kinds of opposite polarity corona fields are housed in the housing, and each corona field all has corona electrode and non-corona electrode, and described electrode all connects high-voltage DC power supply.
4. the cleaning equipment of flue dust according to claim 3, dust is characterized in that two opposite polarity corona fields are connected in same high-voltage DC power supply, perhaps are connected in different high-voltage DC power supplies.
5. the cleaning equipment of flue dust according to claim 3, dust is characterized in that opposite polarity corona field comprises just dizzy electric field and negative dizzy electric field.
CN 200410023117 2004-04-16 2004-04-16 Method for purifying smoke and dust and equipment thereof Expired - Fee Related CN1291774C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200410023117 CN1291774C (en) 2004-04-16 2004-04-16 Method for purifying smoke and dust and equipment thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 200410023117 CN1291774C (en) 2004-04-16 2004-04-16 Method for purifying smoke and dust and equipment thereof

Publications (2)

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CN1593718A CN1593718A (en) 2005-03-16
CN1291774C true CN1291774C (en) 2006-12-27

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Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101310823B (en) * 2008-02-04 2010-06-09 冯长青 Liquid flow water wash static combined type gas purification method and device thereof
DE102009006528A1 (en) * 2009-01-28 2010-07-29 Eisenmann Anlagenbau Gmbh & Co. Kg Plant for coating, in particular painting, of objects, in particular vehicle bodies
CN102755807A (en) * 2012-08-07 2012-10-31 苏瑞仪 Wet-method spraying electrostatic purifier for waste gas of setting machine
CN104138699B (en) * 2014-07-29 2015-10-14 张利峰 A kind of electrostatic water smoke air cleaning unit
CN105903565A (en) * 2016-06-08 2016-08-31 深圳奇滨科技开发有限公司 Vaporous water condensation dedusting device
CN106268132B (en) * 2016-08-29 2019-05-07 四川环翔科技有限责任公司 A kind of efficient PM2.5 adsorbent equipment
CN107297115A (en) * 2017-07-26 2017-10-27 广州仁廙环保技术有限公司 Cold plasma fusion technology exhaust treatment system and method
CN111009587B (en) * 2019-11-25 2021-05-14 湖南红太阳新能源科技有限公司 Photovoltaic module for atmospheric environment restoration and power generation multiplexing

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