CN103480513A - High-speed vortex electric field and cyclone combined separation method and cyclone separator - Google Patents
High-speed vortex electric field and cyclone combined separation method and cyclone separator Download PDFInfo
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- CN103480513A CN103480513A CN201310429964.3A CN201310429964A CN103480513A CN 103480513 A CN103480513 A CN 103480513A CN 201310429964 A CN201310429964 A CN 201310429964A CN 103480513 A CN103480513 A CN 103480513A
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Abstract
The invention relates to a high-speed vortex electric field and cyclone combined separation method and a cyclone separator. The method comprises the following steps: two electric fields independent from each other are arranged in the cyclone separator, an entrance section is used as an electrostatic field, and a separation section is used as a vortex electric field; an air flow containing impurities passes through the electrostatic field at the entrance section formed by a plate electrode and a corona electrode, and enters the vortex electric field at the separation section, impurity particles are ionized in the electrostatic field, electrified particles rotate at an accelerated speed in the vortex electric field under the combined action of the lorentz force and the electric field force, and the impurities impact the wall surface to be separated in a gathering manner through adjusting the electric field parameters. Compared with the traditional cyclone separator, the cyclone separator provided by the invention, can achieve better separating effect.
Description
Technical field
The present invention relates to a kind of high speed eddy electric field cyclone separation method and cyclone separator, particularly a kind of compound isolation technics and device that electric field separates is combined with cyclonic separation.
Background technology
In industrial production, in the place that produces a large amount of dust or need to remove as far as possible in carrying gas solid particle polluter and the drop carried, carry out when gas-solid-liquid separates tending to use cyclone separator.Cyclone separator has following advantage: 1. no-movable part, reliable, safety; 2. maintenance cost is low, and regular maintenance is simple and convenient; 3. manufacture simply, cost is low; 4. in gas medium, impurity concentration is larger, and the front and back pressure drop is less, and separating effect is better.
Fig. 1 is general cyclone separator structure figure, comprises the impurity outlet of entrance 2, segregation section 6, exhaust duct 9 and segregation section bottom; The top of segregation section is cylindrical section, and hypomere is cone segments.Explain the action principle of cyclone separator with reference to Fig. 1.Impure air-flow enters cyclone separator by access road, air-flow rotates along the annular inner chamber outside between top cylindrical section and outlet exhaust duct on the one hand, generation centrifugal force rotatablely moves, by quality in air, larger impurity particle gets rid of to internal chamber wall, impurity, because Action of Gravity Field down collects, enters dust storage chamber.On the other hand, air-flow will rotate and down be moved into the bottom cone segments, and this has aggravated down collecting of impurity particle to motion.Air-flow moves and can up move along outlet exhaust duct axial centre spiral again by upwards resistance component effect on the cone inclined-plane, forms the inside vortex air-flow, so clean air is just discharged by exhaust duct.
By the centrifugal force formula
known, only have the increase induction air flow ratio in the situation that cyclone separator will be strengthened separating effect calmly, but the increase of flow velocity is relevant with energy consumption and equipment cost, amplification can not be very large.In addition, centrifugal force is relevant with the impurity particle quality, and the flow perturbation that the particle that quality is large is subject to is little, more be easy to separate, so cyclone separator is applicable to separate containing the large granular impurity air-flow.
Summary of the invention
The present invention is directed to the limitation of cyclone separator, the compound isolation technics that proposition utilizes electric field separates to combine with cyclonic separation, wherein cyclonic separation is mainly used to the larger impurity particle of quality in the separation bubble medium, and electric field separates is mainly used to the less impurity of quality in separation bubble.Two kinds of isolation technics do not have clear and definite distinguishing limit, just according to certain separation method, the centrifugation better effects if of impurity are determined, and two kinds of method synthesis effects, reach better separating effect.
Electrostatic Absorption technology in the past unites two into one ionizing electric field and adsorbing separation electric field, but Electrostatic Absorption has following defect: 1. inlet air flow speed can not be too high, 2. need the ionization sorption channel of growing, 3. need rapping apparatus, regularly remove the impurity on the absorption pole plate, 4. easily cause the secondary fly-up of institute's accumulated powder dirt on pole plate.For as above defect, the present invention proposes static ionizing electric field and absorption electric field separates, utilize eddy electric field to adsorb the method for impurity.
A kind of high speed eddy electric field cyclone separation method of the present invention, be that two separate electric fields are set in cyclone separator, and entrance is electrostatic field, and segregation section is eddy electric field; Impure air-flow is by the entrance electrostatic field be comprised of battery lead plate and corona discharge electrode, impurity particle is ionized in electrostatic field, enter the eddy electric field of segregation section, charged particle is subject to the comprehensive function of Lorentz force and electric field force and accelerates rotation in electric field, by regulating electric pulse field parameter, makes impurity collision wall assemble separation.
High speed eddy electric field cyclone separator of the present invention, its structure as shown in Figure 2 and Figure 3.Comprise a cyclone separator body, be divided into entrance, segregation section, exhaust duct 9 and impurity outlet, wherein entrance is provided with corona discharge electrode and pole plate, and segregation section is comprised of the metal segments of upper part and the insulating segment of lower part, insulating segment surface winding around, form solenoid.
In described segregation section, metal segments and insulating segment are to take the entrance bottom position as boundary, and, in segregation section, the part that is positioned at the entrance lower position is insulating segment.
Corona discharge electrode and pole plate connect respectively negative pole and the positive pole of high-voltage DC power supply, make entrance produce high-voltage electrostatic field.
The coil that insulating segment is wound around passes to the high-frequency alternating electric current, makes in segregation section to produce time dependent magnetic field, and the magnetic field of variation produces again eddy electric field.
Impure Entry to motorway air-flow is ionized by the static place of entrance, then enters segregation section, and the centrifugal force that large granular impurity is mainly produced by cyclone separator is separated, and granule impurity is accelerated to separate by eddy electric field.
The present invention compares with traditional cyclone separator, impure moving gaseouse medium enters cyclone separator, at entrance by the high-pressure electrostatic FI, then enter segregation section, comprehensive function due to rotating centrifugal separation and eddy electric field acceleration rotating separation, impurity is thrown toward wall, gravitate and discharging from below impurity outlet.Cleaning gas tream upwards forms the inside vortex motion, from exhaust duct, discharges, and can reach better separating effect.
The accompanying drawing explanation
Fig. 1 is general cyclone separator structure sketch;
Fig. 2 is high speed eddy electric field cyclone separator shape assumption diagram;
Fig. 3 is high speed eddy electric field cyclone separator schematic diagram;
Wherein: 1-cyclone separator body, 2-entrance, 3-corona discharge electrode, 4-pole plate, 5-metal segments, 6-segregation section, 7-insulating segment, 8-coil, 9-exhaust duct.
The specific embodiment
Below in conjunction with accompanying drawing and the specific embodiment, the present invention is described in further detail:
As shown in Figure 2, cyclone separator body 1 consists of entrance 2, segregation section 6 and exhaust duct 9, and segregation section 6 bottoms are the impurity outlet.Wherein entrance 2 lateral surfaces arrange pole plate 4, and centre is corona discharge electrode 3; Segregation section 6 is divided into the insulating segment 7 of metal segments 5 and the latter half of the first half, and the surperficial winding around of insulating segment 7 forms solenoid; Exhaust duct 9 is arranged on the centre of metal segments 5, forms circular gas channel.
As shown in Figure 3, impure air-flow enters cyclone separator with the speed of 5-8m/s, and the pole plate 4 of entrance 2 connects the positive pole of high-voltage DC power supply, and middle corona discharge electrode 3 connects power cathode.Produce thus high-voltage electrostatic field between the two poles of the earth.Under electric field action, the free ion in air-flow will be to two polar motions, and voltage is higher, and electric-field intensity is larger, and the movement velocity of ion is also just fast.In the ion motion process, clash into impurity and air molecule, make neutral atom resolve into negative ions.After air ionization, due to chain reaction, the number of ions moved at interpolar increases greatly.Cation is stripped from out from impurity, flies to corona discharge electrode 3, and impurity is with negative electrical charge.Because the ionization channels of entrance 2 is shorter, airborne electronegative impurity has little time to move on pole plate 4 and has entered segregation section 6, so entrance 2 static electric field only play the ionization effect, does not play the separation dust collector effect.Ionizing air enters the metal segments 5 of segregation section 6, circular passage high speed rotary motion along exhaust duct 9 outsides, so the impurity that in air-flow, quality is larger is because centrifugal action is easy to be thrown on the sidewall of segregation section 6, gravitate and falling, discharge from lower part outlet.And the less impurity of quality is separated by centrifugal action not too easily due to the disturbance of high velocity air, so along with flow rotation down enters bottom insulating segment 7.Pass to the high-frequency alternating electric current in the solenoid that insulating segment 7 forms, the effect of electric current makes the inner magnetic field that produces of solenoid.According to B=u ° of nI of magnetic induction intensity formula on the axis of solenoid inside, when electric current changes with the piecewise linearity incremental manner, magnetic induction intensity changes with the piecewise linearity incremental manner equally.According to Faraday's electromagnetic induction law, in solenoid, will produce the induction eddy electric field.Due to
if keep
for definite value, the induction field produced is constant.Charged particle enters in eddy electric field, and the impact of variation magnetic field produces Lorentz force on the one hand, and one side is subject to again the effect of eddy electric field and accelerates circular motion.The charged particle air-flow originally just rotates, and the effect of Electric and magnetic fields has aggravated this motion, makes the impurity that quality is less also can get rid of to wall owing to rotatablely moving, and gravitate and fall to separating is discharged from outlet.Be subject to component effect upwards and form the inside vortex made progress along the exhaust duct axial centre and move in conical section through the clean gas of separating, finally discharge from exhaust duct.
Charged particle suffered Lorentz force in magnetic field is F=qvB, and Lorentz force only changes the direction of motion of particle and do not change its velocity magnitude.Formula shows, changes of magnetic field, and Lorentz force also changes constantly.Charged particle circles in magnetic field, and its radius is
when magnetic induction intensity is maximum, the circular motion radius minimum.If cyclone separator segregation section (6) radius is r', maximum magnetic induction
if on the inner axis of solenoid, magnetic induction intensity is B=μ ° nI, solenoid coil current
Charged particle also is subject to the effect of electric field force simultaneously, and the electric field force size is F=E
senseq, direction of an electric field is along concentric-ring pattern eddy electric field line tangential direction.Due to the Lorentz force direction, perpendicular to the Particles Moving direction, charged particle is not done work, therefore, under the effect of electric field force, charging particle movement speed constantly increases, and kinetic energy constantly increases.The increase of speed has changed the particle circular motion radius, so, under the comprehensive function of finally accelerating to separate at cyclonic separation and eddy electric field, charged impurity particle moves to the cyclone separator outer wall and separates, and discharges from the bottom outlet.Be subject to upwards component effect and upwards move as inside vortex along exhaust duct 9 axle center in cone segments through the clean swirling eddy separated, finally discharging from exhaust duct 9.
Claims (6)
1. a high speed eddy electric field cyclone separation method, is characterized in that, two separate electric fields are set in cyclone separator, and entrance is electrostatic field, and segregation section is eddy electric field; Impure air-flow is to pass through the entrance electrostatic field be comprised of battery lead plate and corona discharge electrode, impurity particle is ionized in electrostatic field, enter the eddy electric field of segregation section, charged particle is subject to the comprehensive function of Lorentz force and electric field force and accelerates rotation in electric field, by regulating electric pulse field parameter, makes impurity collision wall assemble separation.
2. a high speed eddy electric field cyclone separator, comprise a cyclone separator body (1), the entrance (2) that it is characterized in that cyclone separator is provided with corona discharge electrode (3) and pole plate (4), segregation section (6) divides for the metal segments (5) of being divided by top and the insulating segment (7) of lower part, metal segments (5) links with entrance (2), insulating segment (7) winding around (8), form solenoid.
3. high speed eddy electric field cyclone separator according to claim 2, is characterized in that corona discharge electrode (3) and pole plate (4) connect respectively negative pole and the positive pole of high-voltage DC power supply, and entrance (2) can produce high-voltage electrostatic field.
4. high speed eddy electric field cyclone separator according to claim 2, it is characterized in that the coil (8) that insulating segment (7) is wound around passes to the high-frequency alternating electric current, can produce time dependent magnetic field in segregation section (6), the magnetic field of variation produces again eddy electric field.
5. high speed eddy electric field cyclone separator according to claim 2, is characterized in that in described segregation section, and metal segments and insulating segment are to take the entrance bottom position as boundary.
6. high speed eddy electric field cyclone separator according to claim 2, it is characterized in that impure Entry to motorway air-flow is ionized by the static place of entrance (2), then enter segregation section (6), the centrifugal force that large granular impurity is mainly produced by (1) of cyclone separator is separated, and granule impurity accelerates separation by eddy electric field.
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103801168A (en) * | 2014-02-18 | 2014-05-21 | 东南大学 | Combined device and method for removing flue gas dust and multiple pollutants |
| CN106583070A (en) * | 2016-11-12 | 2017-04-26 | 东北石油大学 | Hydraulic cyclone separation method and device and power control method for inner barrel magnetic core |
| CN107470040A (en) * | 2017-09-27 | 2017-12-15 | 江汉大学 | Electromagnetism cyclone dust collectors |
| CN108017123A (en) * | 2017-12-20 | 2018-05-11 | 广西加加汇软件技术有限公司 | Changeable spiral vortex electric field system device |
| CN110038723A (en) * | 2019-04-28 | 2019-07-23 | 张建平 | A kind of interior whirlpool type electrostatic cyclone efficiency of dust collection method for improving |
| CN110142155A (en) * | 2019-04-22 | 2019-08-20 | 太原理工大学 | A kind of accelerator of cyclone feeding pipe magnetism ore pulp |
| CN111656904A (en) * | 2020-06-28 | 2020-09-15 | 广州苗博士生物技术有限公司 | Seed processing device and processing method |
| CN111744684A (en) * | 2019-03-28 | 2020-10-09 | 中国石油天然气集团有限公司 | Electrochemical air flotation tubular cyclone separator, separation method and application |
| CN112074350A (en) * | 2018-03-07 | 2020-12-11 | 普瓦提埃大学 | Method and device for electrostatically separating particulate material |
| CN114985250A (en) * | 2022-06-02 | 2022-09-02 | 郑州嵩山硼业科技有限公司 | Manufacturing process and manufacturing device of high-abundance boric acid |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103801168A (en) * | 2014-02-18 | 2014-05-21 | 东南大学 | Combined device and method for removing flue gas dust and multiple pollutants |
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| CN106583070A (en) * | 2016-11-12 | 2017-04-26 | 东北石油大学 | Hydraulic cyclone separation method and device and power control method for inner barrel magnetic core |
| CN106583070B (en) * | 2016-11-12 | 2018-11-06 | 东北石油大学 | A kind of electrical control method of hydrocyclone separation technology method and apparatus and inner cylinder magnetic core |
| CN107470040A (en) * | 2017-09-27 | 2017-12-15 | 江汉大学 | Electromagnetism cyclone dust collectors |
| CN107470040B (en) * | 2017-09-27 | 2023-11-07 | 江汉大学 | Electromagnetic cyclone dust collector |
| CN108017123A (en) * | 2017-12-20 | 2018-05-11 | 广西加加汇软件技术有限公司 | Changeable spiral vortex electric field system device |
| CN112074350A (en) * | 2018-03-07 | 2020-12-11 | 普瓦提埃大学 | Method and device for electrostatically separating particulate material |
| CN111744684A (en) * | 2019-03-28 | 2020-10-09 | 中国石油天然气集团有限公司 | Electrochemical air flotation tubular cyclone separator, separation method and application |
| CN110142155A (en) * | 2019-04-22 | 2019-08-20 | 太原理工大学 | A kind of accelerator of cyclone feeding pipe magnetism ore pulp |
| CN110038723A (en) * | 2019-04-28 | 2019-07-23 | 张建平 | A kind of interior whirlpool type electrostatic cyclone efficiency of dust collection method for improving |
| CN111656904A (en) * | 2020-06-28 | 2020-09-15 | 广州苗博士生物技术有限公司 | Seed processing device and processing method |
| CN114985250A (en) * | 2022-06-02 | 2022-09-02 | 郑州嵩山硼业科技有限公司 | Manufacturing process and manufacturing device of high-abundance boric acid |
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