CN110115904A - Pulsed plasma smoke and dust purifier - Google Patents
Pulsed plasma smoke and dust purifier Download PDFInfo
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- CN110115904A CN110115904A CN201910528011.XA CN201910528011A CN110115904A CN 110115904 A CN110115904 A CN 110115904A CN 201910528011 A CN201910528011 A CN 201910528011A CN 110115904 A CN110115904 A CN 110115904A
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- Prior art keywords
- dust
- hole
- plasma
- pole
- smoke
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- 239000000428 dust Substances 0.000 title claims abstract description 135
- 239000000779 smoke Substances 0.000 title claims abstract description 17
- 230000007704 transition Effects 0.000 claims abstract description 8
- 230000005484 gravity Effects 0.000 claims description 2
- 238000005192 partition Methods 0.000 claims description 2
- 238000000605 extraction Methods 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 5
- 239000013618 particulate matter Substances 0.000 abstract description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 8
- 239000003546 flue gas Substances 0.000 description 8
- 239000007789 gas Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 239000012716 precipitator Substances 0.000 description 7
- 150000002500 ions Chemical class 0.000 description 6
- 239000002245 particle Substances 0.000 description 6
- 238000001556 precipitation Methods 0.000 description 5
- 238000009825 accumulation Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000001133 acceleration Effects 0.000 description 3
- 230000005684 electric field Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 150000001450 anions Chemical class 0.000 description 2
- 210000001367 artery Anatomy 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 150000001768 cations Chemical class 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003500 flue dust Substances 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 210000003462 vein Anatomy 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010291 electrical method Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000003574 free electron Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrostatic Separation (AREA)
Abstract
The invention discloses pulsed plasma smoke and dust purifiers, are related to dedusting technology field；It solves the phenomenon that reentrainment of dust, and improves efficiency of dust collection；The specially plasma unit that gathers dust is internally provided with emitter and dust collector pole, several pole needles are evenly arranged on emitter, pole needle is connected by conducting wire with high-voltage pulse power source cathode, it gathers dust extremely with the orifice plate of several through-holes, pole needle and through-hole correspond, and pole needle is located on the extended line of through hole center；Through-hole is the circular hole that boundary has arc transition, and entrance chamfering radian is 5-175 °；The present invention realizes array plasma directed movement space in dedusting region, the arc transition region that through-hole has generates inside suction to electrically charged dust, so that dust is inhaled into through-hole and then is collected, fundamentally solves the problems, such as ion wind reentrainment of dust, large scale reduces back corona phenomenon simultaneously, can also effectively remove for 0.3 micron or less particulate matter.
Description
Technical field
The present invention relates to dedusting technology fields, specially pulsed plasma smoke and dust purifier.
Background technique
Current smoke and dust treatment field is based primarily upon three big technique directions, is filter bag method, immersion method, electrical method respectively.
Filter bag method guarantees to need mating a large amount of auxiliary device facilities while its stable dedirt, causes to invest and operating cost is double
Height, it is relatively poor to flue dust ingredient and temperature and humidity adaptability；Immersion method is in current flue gas diversification harmful components step-by-step processing mistake
Cheng Zhong makes the characteristic of flue gas moistening and lowering temperature determine that it is placed in end treatment using link more, limits its scope of application.Together
When difficulty is recycled to the waste of water resource and sediment increasing have certain negative effect；Electric precipitation as in the world when
Preceding to popularize dust treatment technology widest in area, Low investment, low operating cost are approved by industrial enterprise always, electric precipitation one
As include corona discharge electrode and dust collecting electrode, corona discharge electrode ionizes flue gas under the action of high voltage power supply, generates a large amount of free electrons and ion,
It is collided with the dust for flowing through corona discharge electrode and dust collecting electrode, and keeps its charged, wherein the dust ion with negative electrical charge is in electric field force
Under effect, deposit in dust collecting electrode.But there is also following some drawbacks for electric precipitation:
1, voltage of electric field not enough leads to charge that the Coulomb force that is subject to of dust is too small, small makes its drop point perpendicular to the acceleration in flow field
Apart from too long, the increased flight time increase its in flight course by cation collide in sum probability, lead to front
Gas ionization becomes invalid ionization, increases rear end ionization, charges, the pressure in attaching process.
2, pole plate dust accumulation structure is undesirable, and uncontrollable dust accumulation close quarters quickly form local crowning, increases subsequent
Dust is charged in the extension dirt probability of the point, charge rapid accumulation cannot be introduced into circuit, lead to frequent back corona phenomenon, cause powder
Dirt is again introduced into flue gas and flies.
3, it is ionized gas between pole tip and pole plate and forms ion wind of the dense distribution formula perpendicular to plume, the shape near pole plate
At the flow-disturbing factor of a large amount of uncontrollable non-directionals, reentrainment of dust phenomenon is caused.
So the efficiency for how promoting electric precipitation accomplishes that refined dedusting becomes the anxious bottleneck to be broken through in smoke and dust treatment field.
Summary of the invention
The present invention overcomes the shortcomings of the prior art, proposes pulsed plasma smoke and dust purifier, solves two
The phenomenon that secondary fugitive dust, and improve efficiency of dust collection.
The present invention is achieved through the following technical solutions.
Pulsed plasma smoke and dust purifier, including plasma gather dust unit, and the plasma gathers dust in unit
Portion is provided with emitter and dust collector pole, and several pole needles are evenly arranged on the emitter, and the pole needle passes through conducting wire and high pressure
Superimposed pulses power supply is connected, and described gather dust extremely corresponds with the orifice plate of several through-holes, the pole needle and through-hole, and institute
Pole needle is stated to be located on the extended line of through hole center；The through-hole is the circular hole that boundary has arc transition, the diameter of the through-hole
For 20-50mm, the entrance chamfering radian of the through-hole is 5-175 °, and pole needle top is 3- at a distance from through-hole vertical cross-section
100mm。
It is further preferred that the diameter of the through-hole is 20-50mm.
It is further preferred that the pole needle and through-hole are array arrangement.
It is further preferred that multiple parallel units that gather dust are provided in the plasma dust removing units, adjacent two
Be provided with channel of gathering dust between a unit that gathers dust, interchannel is equipped with partition, prevents ion wind from mutually interfering, it is described gather dust it is logical
Road is connected with dust chamber, and the unit that gathers dust is made of a pair of of emitter and dust collector pole.
It is further preferred that the plasma gathers dust, the arrival end of unit is connected with gravitational dust collecting device.
It is further preferred that including air inlet, gravitational dust collecting device, the plasma dust removing units and air-introduced machine, institute
The entrance for stating gravitational dust collecting device is connected with the air inlet, the air outlet of the gravitational dust collecting device and the plasma
The air inlet of dust removing units is connected, the gas outlet of the plasma dust removing units air-introduced machine described by pipeline connection,
The air-introduced machine is connected with motor, the dust chamber of the dust chambers of the plasma dust removing units and gravitational dust collecting device respectively with
Ash conveying device is connected.
Further, the gravitational dust collecting device is that multistage gravitational dust collecting device is connected in series.
The present invention is generated compared with the existing technology to be had the beneficial effect that.
1, the present invention realizes array Dense Plasma directed movement space in entire dedusting region, electrically charged
Granule dust and flue gas are in through-hole edge formation friction point, the gas current friction that multiple friction points generate shape in through-hole arc transition
At negative pressure, and then due to the position of pole needle and through-hole, so that the ion wind of umbrella is formed in through-hole surfaces, so that through-hole had
Arc transition region generates inside suction to electrically charged dust, inhales dust in conjunction with the negative pressure of through-hole edge arc structure
Enter through-hole and then be collected, fundamentally solves the problems, such as electric precipitation reentrainment of dust, while large scale reduces back corona phenomenon,
0.3 micron or less particulate matter can also be effectively removed.
2, working region voltage is made to remain at critical range using superimposed pulses power supply, it is maximized to promote electrification
The normal acceleration of grain object, reduces its flight time, reduces its probability being neutralized.The combined application of the technology also can be real simultaneously
Now to the adaptivity of different operating condition type flue dust.
3, using flue gas flow rate can be improved after the present apparatus as needed to 2m/s or more, traditional electricity, bag dedusting be can reach
2-3 times for filtering wind speed d, it is even higher.
4, it is combined using proprietary front end dedusting corollary apparatus, is great with the isometrical connection in plasma dedusting workspace
It is uneven to reduce plasma dedusting workspace induction air flow ratio, makes the highest front end area inelastic collision probability of negative ion density
It increases, reduces anion and directly contact pole plate, avoid electronics and enter circuit, increase Charged quickly and sink rapidly
Drop.
5, certain controllable voltage of electric field makes to charge the Coulomb force increase that dust is subject to, perpendicular to the acceleration in flow field
Increasing makes its drop point reduce its flight time while also just reduce it and be collided in flight course by cation apart from shorter
The probability of neutralization, makes efficiency of dust collection be improved significantly.
6, reasonable AND DEWATERING FOR ORIFICE STRUCTURE avoids the back corona phenomenon to form the formation of dust accumulation compact district, it is therefore prevented that reentrainment of dust
Phenomenon.
7, because of the raising of flue gas flow rate, reduce device volume substantially, weight of equipment and occupied area also with reduction, into
And reduce construction investment expense.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of pulsed plasma smoke and dust purifier described in embodiment.
Fig. 2 is that plasma described in embodiment gathers dust the structural schematic diagram of unit.
Fig. 3 is emitter and dust collector pole structural scheme of mechanism described in embodiment.
Wherein, 1 is air inlet, and 2 be ladder gravitational precipitator, and 3 be pulsed plasma deduster, and 4 be air-introduced machine, and 5 are
Motor, 6 be emitter, and 7 be dust collector pole, and 8 be channel of gathering dust, and 9 be exhaust gases passes, and 10 be ash conveying pipe, and 11 be pipeline, and 12 be the
One dust storage chamber, 13 be the second dust storage chamber, and 14 gather dust unit for plasma, and 15 be pole needle, and 16 be through-hole.
Specific embodiment
In order to which technical problems, technical solutions and advantages to be solved are more clearly understood, in conjunction with reality
Example and attached drawing are applied, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only used to
It explains the present invention, is not intended to limit the present invention.Below with reference to the examples and drawings technical solution that the present invention will be described in detail, but
The scope of protection is not limited by this.
As shown in Figure 1, be pulsed plasma smoke and dust purifier, including including air inlet 1, ladder gravitational precipitator 2,
Pulsed plasma gathers dust unit 3 and air-introduced machine 4, and the entrance of ladder gravitational precipitator 2 is connected with the air inlet 1, described
The air outlet of ladder gravitational precipitator 2 is connected with the air inlet of the pulsed plasma deduster 3, the pulse plasma
The gather dust gas outlet of unit 3 of body connects the air-introduced machine 4 by pipeline 11, and the air-introduced machine 4 is connected with motor 5, the arteries and veins
Rush plasma gather dust unit 3 the first dust storage chamber 12 and ladder gravitational precipitator 2 the second dust storage chamber 13 respectively with ash pipeline
Road 10 is connected.
The pulsed plasma unit 3 that gathers dust includes plasma dust chamber 14, is set in the plasma dust chamber 14
Multiple parallel collecting unit of dust are equipped with, dust channel 8 is provided between two neighboring collecting unit of dust, the dust channel 8 connects
There is the first dust storage chamber 12.The collecting unit of dust is made of the opposite emitter 6 in position and dust collector pole 7, in emitter 6 and dust collector pole
Exhaust gases passes 9 are formed between 7, several pole needles 15 are evenly arranged on the emitter 6, and the pole needle 15 passes through conducting wire and high pressure
Pulse power cathode is connected, and the dust collector pole 7 is the orifice plate with several through-holes 16, and the pole needle 15 and through-hole 16 1 are a pair of
It answers, and the pole needle 15 is located on the extended line at 16 center of through-hole；Pole needle 15 and through-hole 16 are array arrangement.The through-hole 16
There is the circular hole of arc transition for boundary, the entrance chamfering radian of through-hole 16 is 5-175 °, and preferably 60 °, the length of pole needle 15 is
The spacing of 30mm, top to the through-hole 16 of pole needle 15 are 3-100mm, preferably 60mm.The diameter of through-hole 16 is 20-50mm, preferably
Diameter be 30mm.
The present apparatus is gathered dust the rulers such as workspace using combined type ladder gravitational dust collecting device in latter end ladder and pulse plasma
Very little integration connection reduces back segment pulse plasma dedusting workspace to realize the removal of better leading portion bulky grain weight particle
The pressure in domain increases the remaining electrification probability of dust and the theoretical value of electrically charged quantity；It ensure that front end area plume simultaneously
Consistency and velocity uniformity are flowed to, inelastic collision probability and the particulate matter for greatly improving anion close quarters are electrically charged
Quantity, to promote efficiency of dust collection.Pass through control using the design of pole needle and through-hole in pulsed plasma dedusting region
The arc transition angle of through-hole, the suction for forming the charged particle passed through in through-hole peripheral region by special through-hole structure is more
Adequately to suck through-hole, and aggregation is formed after dust collector pole 7, rapid subsidence, prevents charged particle under the effect of gravity
Reentrainment of dust phenomenon, improve dust separation effect.
The specific course of work are as follows: dust enters ladder gravitational precipitator 2 by air inlet 1, in ladder gravitational precipitator 2
Under the action of, the dust of bulky grain weight particle is removed into the second dust storage chamber 13, and the dust of remaining molecule enters arteries and veins
Plasma is rushed to gather dust unit 3, high-voltage pulse power source makes flue gas ionization generate positive and negative charge by pole needle 15, and further make into
The dust particles electrification entered, electrically charged dust particles are quickly sucked through-hole 16 around through-hole 16, into channel 8 of gathering dust,
And polymerize and settle into the first dust storage chamber 12 as bulky grain, so that 0.3 micron or less particulate matter can also effectively remove.
The above content is combine specific preferred embodiment to the further description done of the present invention, and it cannot be said that
A specific embodiment of the invention is only limitted to this, for those of ordinary skill in the art to which the present invention belongs, is not taking off
Under the premise of from the present invention, several simple deduction or replace can also be made, all shall be regarded as belonging to the present invention by being submitted
Claims determine scope of patent protection.
Claims (7)
1. pulsed plasma smoke and dust purifier, including plasma dust removing units, set inside the plasma dust removing units
It is equipped with array emitter and corresponding dust collector pole, which is characterized in that the emitter uniform array is provided with several poles
Needle, the pole needle are superimposed power cathode with high-voltage pulse by conducting wire and are connected, and described gather dust extremely has the orifice plate of several through-holes,
The pole needle and through-hole corresponds, and the pole needle is located on the extended line of through hole center；The through-hole has for boundary
The circular hole of arc transition, the entrance chamfering radian of the through-hole are 5-175 °, pole needle top and through-hole vertical cross-section away from
From for 3-100mm.
2. pulsed plasma smoke and dust purifier according to claim 1, which is characterized in that the diameter of the through-hole is
20-50mm。
3. pulsed plasma smoke and dust purifier according to claim 1, which is characterized in that the pole needle and through-hole
For array arrangement.
4. pulsed plasma smoke and dust purifier according to claim 1, which is characterized in that the plasma dedusting
It is provided with multiple parallel collecting unit of dust in unit, is provided with dust channel between two neighboring collecting unit of dust, interchannel is set
There is partition, the dust channel is connected with dust storage chamber, and the collecting unit of dust is made of a pair of of emitter and dust collector pole.
5. pulsed plasma smoke and dust purifier according to claim 1, which is characterized in that the plasma dedusting
The arrival end of unit is connected with gravitational dust collecting device.
6. pulsed plasma smoke and dust purifier according to claim 1, which is characterized in that including air inlet, gravity
Dust-extraction unit, the plasma dust removing units and air-introduced machine, the entrance of the gravitational dust collecting device are connected with the air inlet,
The air outlet of the gravitational dust collecting device is connected with the air inlet of the plasma dust removing units, the plasma dust removing units
The gas outlet air-introduced machine described by pipeline connection, the air-introduced machine is connected with motor, the plasma dust removing units
The dust chamber of dust chamber and gravitational dust collecting device is connected with ash conveying device respectively.
7. pulsed plasma smoke and dust purifier according to claim 5 or 6, which is characterized in that the gravitational dust collection
Device is that multistage gravitational dust collecting device is connected in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910528011.XA CN110115904A (en) | 2019-06-18 | 2019-06-18 | Pulsed plasma smoke and dust purifier |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910528011.XA CN110115904A (en) | 2019-06-18 | 2019-06-18 | Pulsed plasma smoke and dust purifier |
Publications (1)
| Publication Number | Publication Date |
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| CN110115904A true CN110115904A (en) | 2019-08-13 |
Family
ID=67524137
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| CN201910528011.XA Pending CN110115904A (en) | 2019-06-18 | 2019-06-18 | Pulsed plasma smoke and dust purifier |
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|---|---|---|---|---|
| JPH09145029A (en) * | 1995-11-20 | 1997-06-06 | Kobe Steel Ltd | Ash melting system |
| JP2008036471A (en) * | 2006-08-01 | 2008-02-21 | Mitsubishi Electric Corp | Electric dust collector and air treatment device |
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Application publication date: 20190813 |