CN107213984A - A kind of electromagnetic duster and flue gas purification system - Google Patents
A kind of electromagnetic duster and flue gas purification system Download PDFInfo
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- CN107213984A CN107213984A CN201710651570.0A CN201710651570A CN107213984A CN 107213984 A CN107213984 A CN 107213984A CN 201710651570 A CN201710651570 A CN 201710651570A CN 107213984 A CN107213984 A CN 107213984A
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- magnetic field
- flue gas
- purification system
- collecting plate
- fume emission
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C1/00—Magnetic separation
- B03C1/02—Magnetic separation acting directly on the substance being separated
- B03C1/023—Separation using Lorentz force, i.e. deflection of electrically charged particles in a magnetic field
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C1/00—Magnetic separation
- B03C1/005—Pretreatment specially adapted for magnetic separation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C1/00—Magnetic separation
- B03C1/02—Magnetic separation acting directly on the substance being separated
- B03C1/30—Combinations with other devices, not otherwise provided for
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/02—Cleaning by the force of jets or sprays
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/08—Cleaning involving contact with liquid the liquid having chemical or dissolving effect
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Treating Waste Gases (AREA)
- Electrostatic Separation (AREA)
Abstract
The invention discloses a kind of electromagnetic duster, including：Charge device；The magnetic field module of wind direction under the charge device is arranged on, the magnetic field module includes two magnetic poles being oppositely arranged；Multiple collecting plates in the magnetic field that the magnetic field module is formed, and the plate face of the collecting plate and the magnetic direction in air current flow direction and the magnetic field are parallel；Wherein, the voltage of the charge device is adjustable, and/or the magnetic field intensity of the magnetic field module is adjustable, and/or the spacing between the two neighboring collecting plate is adjustable.Because the spacing at least one between the voltage of charge device, the magnetic field intensity of magnetic field module and two neighboring collecting plate is adjustable, therefore by adjusting above-mentioned parameter, most dust particle can be caused to reach collecting plate and be captured that this can ensure dust removing effects of the equipment under different working conditions.A kind of flue gas purification system using above-mentioned electromagnetic duster is also disclosed in the present invention.
Description
Technical field
The present invention relates to dust separation technical field, more particularly to a kind of electromagnetic duster and flue gas purification system.
Background technology
With the lasting aggravation of atmosphere pollution, the common recognition that air has become people is administered, is discharged into various in air
Gas to carry out purifying and dedusting be a kind of effective atmospheric cleaning means, therefore purifying and dedusting technology is in air contaminant treatment
In obtained increasingly being widely applied.
So that the fume emission in power plant is administered as an example, current wet desulfurizing process is that China is de- for thermal power plant flue gas
Sulphur most ripe technology, however, still containing fine particulates and aerosol in flue gas after wet desulphurization, especially
For particulates such as PM2.5, wet desulphurization does not almost reach any regulation effect.In order to further remove the pollution in flue gas
Thing, current way is usually to set wet electrical dust precipitator at the rear portion of wet desulphurization device, small to remove PM2.5 etc. as far as possible
Particle and aerosol contaminants.
Wet electrical dust precipitator is a kind of electrostatic precipitator, and its principle is that dust passes through high voltage electric field, makes dust is charged to turn into
Charged particle, powered dust is collected on positive plate in the electric field, and dust stratification is cleared up by way of periodic flushing, so as to realize
The purpose of dedusting.
However, current wet electrical dust precipitator is certain due to electric-field intensity, therefore its concentration and cigarette to inlet flue gas
The wind speed of gas has more strict requirements, after the concentration or wind speed of flue gas are excessive, and the dust removing effects of wet electrical dust precipitator can show
Write and decline, in order to reduce wind speed, also need to increase equipment volume, to increase excessively stream cross-sectional area, this can cause equipment integrally mistake
In huge, operating cost height.
The content of the invention
In view of this, an object of the present invention is to provide a kind of electromagnetic duster, so as to can reduce flue gas concentration and
The influence that flue gas flow rate is brought to dust removing effects, improves gas cleaning effect, meets the emission request of flue gas.
Another object of the present invention, which is also resided in, provides a kind of flue gas purification system using above-mentioned electromagnetic duster.
In order to achieve the above object, the present invention provides following technical scheme：
A kind of electromagnetic duster, including：
Charge device；
The magnetic field module of wind direction under the charge device is arranged on, the magnetic field module includes two magnetic being oppositely arranged
Pole；
Multiple collecting plates in the magnetic field that the magnetic field module is formed, and the plate face and air-flow stream of the collecting plate
The magnetic direction in dynamic direction and the magnetic field is parallel；
Wherein, the voltage of the charge device is adjustable,
And/or the magnetic field intensity of the magnetic field module is adjustable,
And/or the spacing between the two neighboring collecting plate is adjustable.
Preferably, the spacing between two collecting plates of arbitrary neighborhood is equal.
Preferably, in addition to for cleaning the spray equipment of the collecting plate.
Disclosed in this invention flue gas purification system, including the fume emission pipeline being connected with desulfuration absorbing tower is described
The end of fume emission pipeline is additionally provided with the electromagnetic duster disclosed in as above any one.
Preferably, the charge device and the collecting plate are built in the fume emission pipeline, the magnetic field
Two relative magnetic poles of module are separately positioned on top surface and the bottom surface of the fume emission pipeline.
Preferably, in addition to the spray equipment that is arranged in the fume emission pipeline.
Preferably, the spray equipment has multiple spray units, and the spray unit is arranged on the smoke discharge pipe
The top surface on road, and the spray unit is distributed in the gap that the two neighboring collecting plate is formed, and the dust
In the gap that the inwall of plate and the fume emission pipeline is formed, if any one spray unit is provided with dry-spray
Mouthful.
It is preferred that, in addition to the wet electrical dust precipitator being arranged in the fume emission pipeline, and the wet-esp
Device is located at the upwind of the electromagnetic duster.
It is preferred that, the bottom of the fume emission pipeline is additionally provided with the backflow of the ejecting liquid for collecting entrained dirt
Swash plate.
It is preferred that, the bottom of the fume emission pipeline is additionally provided with return line, and the return line is used for will entrainment
The ejecting liquid of dust returns to the desulfuration absorbing tower.
Dust granules after charge device will turn into charged particle, charged particle in magnetic field, can by perpendicular to
The Lorentz force of the direction of motion, therefore charged particle enters after uniform magnetic field with certain speed, can circumference be done with certain radius
Motion, when flue gas enter magnetic field range after, charged particle in the presence of uniform magnetic field by Lorentz force, while by the wind of flue gas
Power is acted on, and powered dust does curve circular motion, finally impinges upon the collection that is captured on collecting plate.Further, due to wind speed
It is constant, it can approximately think the particle stress equalization in flue gas, into after magnetic field, in the case where Lorentz force is sufficiently large,
Only consider the band electrochondria in the effect of Lorentz force, the law moved in a circle according to charged particle in uniform magnetic field, flue gas
Son can approximately be thought to move in a circle in magnetic field.
Its moving radius can approximately use formula：Calculate, wherein m is charged particle mass, v is charged particle speed
Degree, q is charged particle carrying capacity, and B is magnetic field electromagnetic intensity.
Analyzed by above-mentioned formula, dust quality m is fixed, and speed v is also fixed, and carried charge q can be by adjusting
Save the voltage of charge device to be changed, electromagnetic intensity B can adjust its size by magnetic field module, therefore, lead to
The voltage of charge device is overregulated, or moving radius of the dust in magnetic field is adjusted by adjusting electromagnetic intensity, can
So that the movement locus of how many dust big absolutely can reach collecting plate to be captured；Meanwhile, can be by changing adjustable dust-collecting
The spacing size of plate, to adapt to the moving radius of dust.
And disclosed in this invention electromagnetic duster in, the voltage of charge device, the magnetic field intensity of magnetic field module and
Spacing at least one between two neighboring collecting plate is adjustable, by adjusting above-mentioned parameter, can cause most dust
Particulate reaches collecting plate and is captured that this can ensure dust removing effects of the equipment under different working conditions.
Disclosed in this invention flue gas purification system in, as a result of above-mentioned electromagnetic duster, therefore the flue gas is net
Change system has the corresponding technological merit of above-mentioned electromagnetic duster concurrently, and this is no longer repeated herein.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the flue gas purification system disclosed in an embodiment of the present invention；
Fig. 2 for Fig. 1 A-A to schematic cross-sectional view；
Fig. 3 is the structural representation of the flue gas purification system disclosed in another embodiment of the invention；
Fig. 4 is movement locus schematic diagram of the charged particle in uniform magnetic field；
Fig. 5 is the movement locus schematic diagram that charged particle is captured by collecting plate.
Marked in accompanying drawing as follows：
1 is desulfuration absorbing tower, and 2 be fume emission pipeline, and 3 be magnetic pole, and 4 be spray equipment, and 5 be collecting plate, and 6 be charged dress
Put, 7 be return duct, and 8 be wet electrical dust precipitator.
Embodiment
One of core of the present invention is to provide a kind of electromagnetic duster, to reduce flue gas concentration and flue gas flow rate pair
The influence that dust removing effects are brought, improves gas cleaning effect, meets the emission request of flue gas.
Another core of the present invention, which is also resided in, provides a kind of flue gas purification system using above-mentioned electrostatic precipitator.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Fig. 1 and Fig. 2 are please also refer to, the electromagnetic duster disclosed in the embodiment of the present invention includes charge device 6, magnetic field
Module and collecting plate 5, will be by charged formation charged particle, magnetic field module by the dust granules in the flue gas of charge device 6
The leeward for being arranged on charge device 6 is upward, and magnetic field module specifically includes two magnetic poles being oppositely arranged 3, and two magnetic poles 3 are respectively
Stable uniform magnetic field is formd between N poles and S poles, and the two magnetic poles 3, specifically, magnetic field module is arranged on flue
On the outer wall of top and bottom.Collecting plate 5 includes multiple, and multiple collecting plates 5 are arranged on the magnetic field that magnetic field module is formed
In, the plate face of collecting plate 5 is parallel with the magnetic direction in air current flow direction and magnetic field, in addition, institute in the present embodiment
Between voltage, the magnetic field intensity of magnetic field module and the two neighboring collecting plate 5 of the charge device 6 of disclosed electromagnetic duster
Spacing at least one is adjustable.
Fig. 4 is refer to, dust granules will turn into charged particle after charge device 6, and charged particle is in magnetic field, meeting
By the Lorentz force being perpendicularly to the direction of movement, therefore charged particle is entered after uniform magnetic field with certain speed, can be with certain
Radius moves in a circle, after flue gas enters magnetic field range, charged particle in the presence of uniform magnetic field by Lorentz force, simultaneously
Acted on by the wind-force of flue gas, powered dust does curve circular motion, finally impinge upon the collection that is captured on collecting plate 5.Further
, because wind speed is constant, it can approximately think the particle stress equalization in flue gas, it is enough in Lorentz force into after magnetic field
In the case of big, the effect of Lorentz force, the law moved in a circle according to charged particle in uniform magnetic field, flue gas are only considered
In charged particle can approximately think to move in a circle in magnetic field.
V in Fig. 4 represents the speed of charged particle, and F represents the Lorentz force suffered by charged particle, and R represents band electrochondria
The radius of son movement locus in magnetic field,
After collecting plate 5 are set in the correct position in magnetic field, charged particle will be stopped and be captured by collecting plate 5, such as Fig. 5
Shown in.
The moving radius R of charged particle can approximately use formula：Calculate, wherein m is charged particle mass, v is
Charged particle speed, q is charged particle carrying capacity, and B is magnetic field electromagnetic intensity.
Analyzed by above-mentioned formula, dust quality m is fixed, and speed v is also fixed, and carried charge q can be by adjusting
Save the voltage of charge device 6 to be changed, electromagnetic intensity B can adjust its size by magnetic field module, therefore, lead to
The voltage of charge device 6 is overregulated, or moving radius of the dust in magnetic field is adjusted by adjusting electromagnetic intensity, can
So that the movement locus of how many dust big absolutely can reach collecting plate 5 to be captured；At the same time it can also by changing adjustable collection
The spacing size of dirt plate 5, to adapt to the moving radius of dust.
And in the electromagnetic duster disclosed in above-described embodiment, the voltage of charge device 6, the magnetic field intensity of magnetic field module
And the spacing at least one between two neighboring collecting plate 5 is adjustable, by adjusting above-mentioned parameter, it can cause most
Dust particle reaches collecting plate 5 and is captured that this can ensure dust removing effects of the equipment under different working conditions.
The calculation specifications of particle movement radius are carried out by taking PM2.5 particulates as an example：
PM2.5 particulates, particle diameter is 2.5 microns, the spheroid that its volume is approximately 2.5 microns of diameter is calculated, volume(R is particle radius).Because dust is with aerosol droplets
Form exist, by the quality of the water of its approximate same volume, M=ρ V ≈ 8.18 × 10-15Kg (ρ is density).Flue gas is in flue
Wind speed be generally 10~15m/s, take v=15m/s.
Particle entered electric charge field after t seconds, and its carrying capacity q can be represented with the formula：
Wherein ε is the relative dielectric constant of particle, is approximately drop by particle, and it is about 80F/m with respect to dielectric constant；ε0It is true
Kongxiang is to dielectric constant, ε0=8.851 × 10-12F/m；dpFor particle diameter, dp=2.5 × 10-6m；E0It is strong for electric charge field
Degree, takes E0=3 × 105V/m；t0The charged time constant entered for particle after electric field, usually 10-3Number of seconds magnitude, and particle exists
The time t long enough of electric field, thereforeThe carrying capacity that particle may finally be obtained is q=6.1 × 10-11C。
Again by formulaObtaining moving radius of the PM2.5 in magnetic field is aboutAt this moment adjustment is only needed to
Suitable electromagnetic intensity B is that can obtain suitable orbital radius.
Certainly, can also be adjusted on the premise of electromagnetic intensity B (magnetic field intensity) is constant two neighboring collecting plate 5 it
Between distance, to adapt to PM2.5 moving radius.
It refer in Fig. 2, the electromagnetic duster disclosed in the present embodiment, in order that dust removing effects are optimal, dust
Plate 5 is evenly arranged, and implies that the spacing between two collecting plates 5 of arbitrary neighborhood is equal.
Further, in order to carry out thoroughly cleaning to the dust on collecting plate 5 in time, the electromagnetism in the present embodiment
Also include spray equipment 4 in deduster, spray equipment 4 is used to carry out cleaning showers to collecting plate 5.
Disclosed in this invention flue gas purification system, including desulfuration absorbing tower 1 and the cigarette that is connected with desulfuration absorbing tower 1
Gas discharge pipe 2, and it is additionally provided with the electromagnetic duster disclosed in above-described embodiment in the end of fume emission pipeline 2.
The flue gas purification system reduces particle concentration and cigarette in flue gas as a result of above-mentioned electromagnetic duster
The influence that gas velocity is brought to dust removing effects, improves gas cleaning effect, meets the emission request of flue gas.
Fig. 1 to Fig. 3 is refer to, charge device 6 and collecting plate 5 are arranged in fume emission pipeline 2, magnetic field module phase
To two magnetic poles 3 be separately positioned on the top surface and bottom surface of fume emission pipeline 2.Need to illustrate, the present embodiment
The top surface of middle fume emission pipeline 2 and bottom surface are for vertical direction, as shown in Figures 1 and 2.
In order to clear up in time collecting in the dust on collecting plate 5, flue gas disclosed in the present embodiment
In cleaning system, in addition to the spray equipment 4 being arranged in fume emission pipeline 2.Specifically, spray equipment 4 has multiple sprays
Unit is drenched, spray unit is arranged on the top surface of fume emission pipeline 2, by the gravity of liquid in itself, its scouring capability can be with
Further enhance, refer to Fig. 2, a spray unit is provided with the gap that two collecting plates 5 of arbitrary neighborhood are formed,
The spray unit is provided with some jets, and the cleaning liquid that jet is ejected washes away the dust on collecting plate 5；Collection
Spray unit is also equipped with the gap that the inwall of dirt plate 5 and fume emission pipeline 2 is formed, if the spray unit is also equipped with
Dry-spray mouthful, these jets are used to clean the dust on collecting plate 5 and the inwall of fume emission pipeline 2, as shown in Figure 2.
In order to further improve dust removing effects, wet electrical dust precipitator 8 can also be set in fume emission pipeline 2, such as Fig. 3
Shown in, wet electrical dust precipitator 8 is arranged in the upwind of electromagnetic duster, and wet electrical dust precipitator 8 coordinates with electromagnetic duster
Using will effectively strengthen dust removing effects, so that the flue gas of discharge is cleaner.
As shown in Figure 1 and Figure 3, the bottom of fume emission pipeline 2 is additionally provided with backflow swash plate, backflow swash plate and collecting plate
5 position is corresponding, after spray equipment 4 is sprayed, and dust can be confluxed receipts under the induced effect of current by the swash plate that flows back
Collection；The tunnel of return duct 7 is provided with the bottom of fume emission pipeline 2, the tunnel of return duct 7 is used to send the ejecting liquid of dust-laden
It is back to desulfuration absorbing tower 1 and carries out the processing of absorption again.
Need to illustrate, the spray equipment 4 in above-described embodiment should use corrosion-resistant and wear-resisting material
It is made, to improve the service life of electromagnetic duster and whole flue gas purification system.
Disclosed in this invention electromagnetic duster and flue gas purification system broken traditional wet electric precipitation to wind speed
Limitation, there is good adaptability to high wind speed environment, there is excellent removal effect simultaneously for particulates such as PM2.5, because
This is also suitable in high-concentration fume environment, under the requirement of equal efficiency of dust collection, due to not by the wind speed limit system, the gas cleaning
Significant spatial shared by system reduces, and operating cost is significantly reduced.
The embodiment of each in this specification is described by the way of progressive, and what each embodiment was stressed is and other
Between the difference of embodiment, each embodiment identical similar portion mutually referring to.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or using the present invention.
A variety of modifications to these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, it is of the invention
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The most wide scope caused.
Claims (10)
1. a kind of electromagnetic duster, it is characterised in that including：
Charge device (6)；
The magnetic field module of wind direction under the charge device (6) is arranged on, the magnetic field module includes two magnetic poles being oppositely arranged
(3)；
Multiple collecting plates in the magnetic field that the magnetic field module is formed, and plate face and the air current flow side of the collecting plate
To and the magnetic field magnetic direction it is parallel；
Wherein, the voltage of the charge device (6) is adjustable,
And/or the magnetic field intensity of the magnetic field module is adjustable,
And/or the spacing between the two neighboring collecting plate is adjustable.
2. electromagnetic duster according to claim 1, it is characterised in that between two collecting plates of arbitrary neighborhood
Away from equal.
3. electromagnetic duster according to claim 1, it is characterised in that also including the spray for cleaning the collecting plate
Device (4).
4. a kind of flue gas purification system, including the fume emission pipeline (2) being connected with desulfuration absorbing tower (1), it is characterised in that institute
The end for stating fume emission pipeline (2) is additionally provided with electromagnetic duster as claimed in claim 1 or 2.
5. flue gas purification system according to claim 4, it is characterised in that the charge device (6) and the dust
Plate is built in the fume emission pipeline (2), and two relative magnetic poles (3) of the magnetic field module are separately positioned on institute
State top surface and the bottom surface of fume emission pipeline (2).
6. flue gas purification system according to claim 5, it is characterised in that also including being arranged on the fume emission pipeline
(2) spray equipment (4) in.
7. flue gas purification system according to claim 6, it is characterised in that the spray equipment (4) has multiple sprays
Unit, the spray unit is arranged on the top surface of the fume emission pipeline (2), and the spray unit is distributed in adjacent two
In the gap that the individual collecting plate is formed, and the inwall of the collecting plate and the fume emission pipeline (2) is formed
In gap, any one spray unit is provided with some jets.
8. the flue gas purification system according to claim 4-7 any one, it is characterised in that also including being arranged on the cigarette
Wet electrical dust precipitator (8) in gas discharge pipe (2), and the wet electrical dust precipitator (8) is located at the upper of the electromagnetic duster
Wind direction.
9. the flue gas purification system according to claim 6 or 7, the bottom of the fume emission pipeline (2), which is provided with, to be used for
Collect the backflow swash plate of the ejecting liquid of entrained dirt.
10. flue gas purification system according to claim 9, the bottom of the fume emission pipeline (2) is additionally provided with backflow
(7) road is managed, return duct (7) road is used to the ejecting liquid of entrained dirt returning to the desulfuration absorbing tower (1).
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| CN201710651570.0A CN107213984A (en) | 2017-08-02 | 2017-08-02 | A kind of electromagnetic duster and flue gas purification system |
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| CN201710651570.0A CN107213984A (en) | 2017-08-02 | 2017-08-02 | A kind of electromagnetic duster and flue gas purification system |
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| CN114682378A (en) * | 2020-12-29 | 2022-07-01 | 陕西青朗万城环保科技有限公司 | Low-wind-resistance dust removal method and control system thereof |
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| CN110145386A (en) * | 2019-04-12 | 2019-08-20 | 北京航空航天大学 | It is a kind of for trapping the device of particulate matter in vehicle exhaust |
| CN111774395A (en) * | 2020-05-28 | 2020-10-16 | 吴迪 | Textile dust collecting device for textile equipment and use method |
| CN111706511A (en) * | 2020-07-01 | 2020-09-25 | 郭宇 | High-efficiency energy-saving screw air compressor |
| CN111791130A (en) * | 2020-07-11 | 2020-10-20 | 郑学成 | Processing method of recovery type sander for iron plate |
| CN114682378A (en) * | 2020-12-29 | 2022-07-01 | 陕西青朗万城环保科技有限公司 | Low-wind-resistance dust removal method and control system thereof |
| CN112864345A (en) * | 2021-02-26 | 2021-05-28 | 安徽熙泰智能科技有限公司 | Substrate pretreatment device and treatment method for removing impurity particles of Micro OLED |
| CN112864345B (en) * | 2021-02-26 | 2023-07-21 | 安徽熙泰智能科技有限公司 | Substrate pretreatment device and method for removing impurity particles by Micro OLED |
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Application publication date: 20170929 |