CN108620236A - A kind of automatically cleaning plasma air Opsonizing method and device - Google Patents
A kind of automatically cleaning plasma air Opsonizing method and device Download PDFInfo
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- CN108620236A CN108620236A CN201710169741.6A CN201710169741A CN108620236A CN 108620236 A CN108620236 A CN 108620236A CN 201710169741 A CN201710169741 A CN 201710169741A CN 108620236 A CN108620236 A CN 108620236A
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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
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/34—Constructional details or accessories or operation thereof
- B03C3/40—Electrode constructions
- B03C3/41—Ionising-electrodes
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L9/00—Disinfection, sterilisation or deodorisation of air
- A61L9/16—Disinfection, sterilisation or deodorisation of air using physical phenomena
- A61L9/22—Ionisation
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- 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
Abstract
Plasma dust-cleaning principle is to make to be captured by high voltage electric field after charge on PM2.5 ash haze particle bands.There are three aspects：The bigger PM2.5 particles of scale are easier by charged and capture, however, its subtle PM2.5 particle, such as less than 0.3 micron of gray haze is easy for improving in electric field or HEPA strainers from plasma air and escape；Gray haze is adsorbed on collecting electrode up to after a certain amount of, if cleaned not in time, can make dust collecting effect rapid decay；Plasma air discharges, and ozone and nitrogen oxides are the by-products being difficult to avoid that.The method of the present invention and device are by allowing grey haze particle to be combined, be agglomerated with water mist, plasma charging area and accumulation area being entered back into after forming larger cluster, it is easier to by charged and collected by electric field；Also, it is trapped the water mist on collecting electrode and forms droplet, flowed down from collecting electrode, take away the grey haze particle on collecting electrode, play the role of cleaning collecting electrode；Water mist has adsorbed charge, reduces ozone and NO_x formation probability, adds photocatalysis Decomposition ozone and nitrogen oxides, can significantly degrade ozone and nitrous oxides concentration.
Description
Technical field
Fields of the present invention are electrode technical field of environmental management, and in particular to a kind of automatically cleaning plasma air tune
Manage method and apparatus.
Background technology
Plasma air conditioning technology is integrated with the multiple functions such as sterilizing, dedusting, decomposing formaldehyde and TVOC, in numerous necks
Domain has a wide range of applications.However, subtle PM2.5 particles, such as less than 0.3 micron of gray haze is easy for from plasma
It escapes in air conditioning device or HEPA strainers, if also, be collected into the dust of collecting electrode and cannot clear up in time, it will
Seriously affect the effect of air conditioning.In addition, when aerial discharge generates plasma, by-product ozone and nitrogen oxides are difficult to
It avoids, the effect of the pernicious gases such as low-power plasma degradation formaldehyde, TVOCs is also very undesirable, and plasma technique is made to exist
Room air conditioning field is seriously restricted.If the mankind or animal are in ozone and the exceeded electrode of nitrogen oxides for a long time
Environment, it would be possible to cause the uncomfortable reaction of body, also some researches show that plant growth is in the long-term exceeded environment of ozone concentration
In, also result in the underproduction.In order to avoid ozone or nitrous oxides concentration are exceeded, the power density of plasma can only be reduced,
This just sacrifices the efficiency of plasma sterilization, dedusting, decomposing formaldehyde and TVOC.Plasma air improve efficiency and ozone and
Contradiction between nitrous oxides concentration is exceeded has seriously constrained plasma technique air conditioning indoors field, green
The popularization and application in organic agriculture field and cultivation field.
In terms of industrial waste gas of plasma processing, plasma power is larger, although to ozone and nitrogen oxides index
Insensitive, still, exhaust gas is shorter in the plasma reaction area residence time, fails fully to react and leaves reaction zone, causes to imitate
Rate is low, and energy consumption is too high, this is also to restrict the widely applied key factor of industrial waste gas of plasma treatment technology.
Invention content
The method of the present invention and device are first allowed by the air inlet setting hair mist device in plasma air conditioning device
Grey haze particle is combined with water mist, is agglomerated, and enters back into plasma charging area and accumulation area after forming larger cluster, it is easier to electric
Lotus and electric field capture.A large amount of water mist enters plasma charging area and accumulation area under the drive of air-flow, and water fog particle can be inhaled
Attached charge, after being adsorbed by water mist due to charge, charge is substantially reduced with oxygen and nitrogen reaction probabilities, also just blocked ozone and
The reaction channel of NO_x formation, the water mist after adsorption charge are excited, and have very strong reactivity and dissolubility, and thin
Micro- water fog particle also has prodigious specific surface area, and the pernicious gas in a large amount of dissolved airs of meeting, water fog particle is by dust electricity
Pole is collected, and is aggregated into large water drop by the water mist that collecting electrode is captured, is flowed down from collecting electrode, take away the gray haze on collecting electrode
Pernicious gas in grain and air plays and blocks pernicious gas and gray haze in ozone and NO_x formation channel, removal air
And the multi-functional of cleaning collecting electrode.
A kind of automatically cleaning plasma air Opsonizing method, which is characterized in that can be analyzed to six steps：
The first step：The air inlet of plasma air conditioning device is provided with hair mist device, generates a large amount of water mists；
Second step：Before air enters plasma air conditioning device from air inlet, air meets with water mist, mixes, during which,
Grey haze particle in air polymerize with water fog particle, agglomerates, and forms larger particles, then brings plasma air tune by air-flow
Manage the charging area of device；
Third walks：Water fog particle is collided in the charging area of plasma air conditioning device and charge, takes charge, and lived
Change, is in higher reactivity state；
4th step：Pernicious gas in the water mist dissolved air being activated simultaneously reacts, and pernicious gas is removed from air；
5th step：Water mist is collected by the collecting electrode of plasma air conditioning device, and is condensed into large water drop, along collecting electrode
Surface flows downward, and takes away the gray haze on collecting electrode, cleans electrode surface；
6th step：Air after being handled by first five step, again passes through the photocatalytic region of plasma air conditioning device, photon
Ozone molecule in catalytic air and nitrogen oxides molecule accelerate ozone molecule and nitrogen oxides molecule to be reacted with other molecules,
Ozone molecule is reduced into oxygen molecule, and nitrogen oxides molecule resolves into nitrogen molecular and oxygen molecule；
This method is by occurring a large amount of water mists, and water fog particle has prodigious specific surface area and surface affinity, in air
Grey haze particle has very strong capture ability；Also, since water fog particle scale is larger, also more with the effective cross section of collision of charge
Greatly, it is easier to be collided with charge, so that charge is preferentially adsorbed on water fog particle, greatly reduce charge and directly touched with oxygen and nitrogen
The probability of reaction is hit, the yield of ozone and nitrogen cargo can be also reduced；After water mist is activated by charge, reactivity is high, also has
There is a prodigious specific surface area, activation water mist is equal to harmful substances such as formaldehyde, TVOCs, nitrogen oxides, ozone and bacteriums in air
There are very strong dissolubility and reactivity, so that these harmful substances is dissolved into water and react removing；Large scale water fog particle is transported
Dynamic speed is relatively low, and the water mist after electrification is also easier to be collected by collecting electrode and remove；After water mist is collected by collecting electrode,
Collecting electrode surface can be cleaned, the problem of collection efficiency declines due to dust accumulation is excessive is can avoid；Water mist plays enhancing plasma
Body is except gray haze effect, enhancing plasma sterilization effect and enhances plasma except harmful substances such as formaldehyde, TVOCs and bacteriums
Effect, the five heavy functions of dissolving nitrogen oxides and ozone and automatically cleaning collecting electrode；Using photocatalysis principle, in plasma
The gas outlet of body air conditioning device is provided with high-intensity light source, it is intended to ozone and nitrous oxides concentration are further decreased, also,
The effect of water mist plasma air conditioning can be further enhanced.
The water fog particle is the carrier of harmful substance, and water mist will not be taken out of gas outlet by air-flow, but into
It is collected by collecting electrode after entering plasma charging area and accumulation area, the water fog particle is exactly the carrier of harmful substance.
Air freshener or pernicious gas cosolvent have been dissolved in the water mist, as hydrogen peroxide, alimentary acetic acid or
Person's dietary alkali, these solvents can enhance the dissolving and reaction of pernicious gas.
The water mist is the subtle droplet generated by ultrasonic wave or high-pressure fog mode, small water mist
Grain, specific surface area is bigger, is also more conducive to the gray haze in absorption and dissolved air and pernicious gas.
Being brought up in the hair fog case has water plant, water plant that can clean water quality.
A kind of automatically cleaning plasma air conditioning device, which is characterized in that from top to bottom respectively by air box, photocatalysis
Case, purifying box and four sections in series of hair fog case form, as shown in Figure 1, the concrete composition of four module cages is respectively,
Air box：It is provided with one or several fans in air box, passes through purifying box and catalyst container for certain driving air-flow.
Photocatalysis box：Several light sources are set in the surrounding of a babinet, the light beam of light source is projected to center and lower section.
Purifying box：It is mounted in metal chest and is made by array group by several discharge cells, each discharge cell includes
One compound electrode column and a collecting electrode pipe, compound electrode column, which is arranged on the axle center of collecting electrode pipe, constitutes an electric discharge
Unit；The compound electrode of discharge cell and the high-voltage output end of high voltage power supply connect, the low pressure of collecting electrode pipe and high voltage power supply
Output end connects；Collecting electrode pipe is a metal circular tube, and compound electrode is alternately connected by corona electrode ring and electric field electrode ring
Cylindrical compound electrode is constituted in a metal shaft, as shown in Fig. 2, corona electrode ring is clipped between electric field electrode ring.Corona
The function of electrode retaining collar is transmitting charge（Electronics or ion）, electric field electrode ring is for enhancing electric field, and collecting electrode pipe is for collecting
Gray haze water fog particle.
Send out fog case：It is provided with ultrasonic wave fog emitter or compression sprayer in hair fog case, compression sprayer is by being pressurized
Water pump and atomizer composition, booster water pump outlet pipe is upward, and booster water pump water outlet pipe end is provided with atomizer, sends out mist
The head cover and surrounding side wall upper part of water tank are all provided with there are many aperture, as shown in Figure 3.Air enters water from the aperture on surrounding side wall
Case is mixed with water mist, then is entered in purifying box by the aperture on head cover, and the water for being also conducive to flow back from purifying box can pass through aperture
Return to hair fog case.
The corona electrode ring is made of conductive fiber, such as carbon fiber, electric conductive oxidation fibres, woven wire, such as carbon
Fiber and stainless steel wire shuffling cloth, carbon fiber nonwoven fabric or felt etc., it is possible to provide a large amount of corona points, and tip will not
Rust.
The electric field electrode ring diameter of the compound electrode is more than corona electrode ring diameter, it is therefore an objective to not dramatically increase electricity
Enhance electric field strength under the premise of dizzy power.
The electric field electrode ring surface of the collecting electrode and compound electrode does transpassivation and hydrophobic treatment, improves its surface
Resistivity, and reduce adsorption capacity of its surface to dust and water mist, the purpose for improving electrode surface resistivity be prevent electrode it
Between spark discharge, the purpose for reducing superficial attractive forces be conducive to cleaning.
The light source is semiconductor light source or glow discharge spot lamp, the emission spectrum of light source between 1.0-8.0eV,
Semiconductor light source light efficiency is high, is conducive to improve system energy efficiency, and glow discharge spot lamp photon energy is higher, reactivity higher,
More easily by ozone and nox adsorption.
Air purification process is that air enters water tank under the air stream drives of air box, from hair fog case surrounding aperture, ash
Haze particle is combined with the water mist in water tank, is agglomerated, and purifying box is entered back into after forming larger cluster, in the collecting electrode pipe of purifying box
Between compound electrode apply 4000V-30000V voltages, according to electrode spacing size apply relevant voltage, make compound electrode with
Highfield is formed between collecting electrode pipe, corona electrode ring transmitting positive charge or negative electrical charge, charge are acted synergistically on photon
Flow through the air and water mist mixed gas between electrode；Air-flow between electrode by when, gray haze water mist is by band after charge-trapping
Electricity, electrification gray haze water mist are moved to collecting electrode pipe, are collected by collecting electrode pipe in the electric field；VOCs and bacterium in air-flow is molten
Solution is in water fog particle, or directly and active particle（Such as electronics, hydroxyl, oxygen atom, ozone, photon, excited atom and molecule
Deng）Reaction, becomes harmless small molecule；When gas is between electrode out, although cleaned, there is certain activity, wherein
Active particle is decomposed such as ozone and nitrogen oxides molecule by absorbing photon when by photocatalysis box, last sanitary safe
Air-flow emitted from air box.Gray haze water mist, which is trapped on collecting electrode pipe, forms droplet, and droplet is from collecting electrode pipe
It flows down, takes away the grey haze particle on collecting electrode pipe, play the role of cleaning collecting electrode pipe.
Description of the drawings
Fig. 1 automatically cleaning plasma air conditioning device schematic diagrames.
Fig. 2 compound electrode schematic diagrames.
Fig. 3 are atomized water tank schematic diagram.
In figure, 1 hair fog case, 2 purifying boxs, 3 photocatalysis boxes, 4 air boxes, 1-1 water pumps, 1-2 atomizers, 2-1
Corona electrode ring, 2-2 electric field electrode rings, 2-3 metal shafts.
Specific implementation mode
Embodiment 1
Air box：It is provided with the axial flow blower of a 20W in air box, function is certain driving air-flow respectively by sending out fog case, net
Change case and photocatalysis box.
Photocatalysis box：The low pressure mercury lamp fluorescent tube that 4 power are respectively 8W is set in photocatalysis box surrounding, centre wavelength exists
253.7nm, major function is ozone decomposition and nitrogen oxides, while also having enhancing plasma sterilization and decomposing the work(of VOCs
Energy.
Purifying box：By 9 discharge cells the metal chest that * wide * high one long are 200*200*200mm is mounted in by array group
It is inside made, compound electrode column, which is arranged on the axle center of collecting electrode pipe, constitutes a discharge cell；The compound electrode of discharge cell
It is connect with the high-voltage output end of high voltage power supply, the low-voltage output connection of tubular collecting electrode pipe and high voltage power supply；Dust electricity
Pole pipe is overall diameter 50mm, thick 2mm, the aluminum pipe of long 150mm；Corona electrode ring is made using carbon fiber felt in compound electrode, outside
Diameter 10mm, diameter of bore 5mm, thick 10mm；Electric field electrode ring is that the aluminium ring of anodic oxidation was done on surface, overall diameter 12mm, interior
Bore dia 5mm, thick 10mm, electric field electrode ring combine electricity in tandem constituted on a M5 threaded metal axis of corona electrode ring alternating
Pole.
Send out fog case：It is a stainless steel babinet to send out fog case, and long * wide * high are 200*200*300mm, are arranged in water tank
There is the booster water pump of 50W, booster water pump water outlet is upward, and booster water pump water outlet end is provided with atomizer, sends out fog
The head cover of case is punched-plate, and the top of water tank side wall is provided with air admission hole.
The automatically cleaning plasma air Opsonizing method and device of the present embodiment, test data in 30 cubes of standard test cabins
It is as follows, it is 10 minutes the time required to PM2.5 removals 99%, natural bacteria killing rate is 99.98% within 1 hour, and formaldehyde removal rate is within 4 hours
95%, 24 hours ozone and nitrous oxides concentration are respectively 15PPB and 11PPB, and continuous operation half a year is electric woth no need to clean dust
Pole, the average one month water replaced in a water tank, water of one week supplement.The present embodiment parameters are significantly better than unglazed increasing
The plasma air purifier of strong water mist function, significantly improves the removal efficiency of gray haze and pernicious gas in air, reduces
Ozone and nitrous oxides concentration, realize the automatically cleaning of collecting electrode.
Claims (10)
1. a kind of automatically cleaning plasma air Opsonizing method, which is characterized in that can be analyzed to following six step：
The first step：The air inlet of plasma air conditioning device is provided with hair mist device, generates a large amount of water mists；
Second step：Before air enters plasma air conditioning device from air inlet, air meets with water mist, mixes first,
Period, the grey haze particle in air polymerize with water fog particle, agglomerate, and form larger particles, then bring plasma by air-flow
The charging area of air conditioning device；
Third walks：Water fog particle is collided in the charging area of plasma air conditioning device and charge, takes charge, and lived
Change, is in higher reactivity state；
4th step：Pernicious gas in the water mist dissolved air being activated simultaneously reacts, and pernicious gas is removed from air；
5th step：Water mist is collected by the collecting electrode of plasma air conditioning device, and is condensed into large water drop, along collecting electrode
Surface flows downward, and takes away the gray haze on collecting electrode, cleans electrode surface；
6th step：Air after being handled by first five step, again passes through the photocatalytic region of plasma air conditioning device, photon
Ozone in catalytic air and nitrogen oxides molecule accelerate ozone molecule and nitrogen oxides molecule to be reacted with other molecules, ozone
Molecule is reduced into oxygen molecule, and nitrogen oxides molecule resolves into nitrogen molecular and oxygen molecule；
This method is by occurring a large amount of water mists, and water fog particle has prodigious specific surface area and surface affinity, in air
Grey haze particle have very strong capture ability；Also, since water fog particle scale is larger, also more with the effective cross section of collision of charge
Greatly, it is easier to be collided with charge, so that charge is preferentially adsorbed on water fog particle, greatly reduce charge and directly touched with oxygen and nitrogen
The probability of reaction is hit, the yield of ozone and nitrogen compound can be also reduced；Water mist becomes activation water mist, reaction after being activated by charge
It is active high, it may have prodigious specific surface area, activation water mist is to formaldehyde, TVOCs, nitrogen oxides, ozone and the bacterium in air
Etc. harmful substances have very strong dissolubility and reactivity, make these harmful substances be dissolved into water react remove；Big ruler
Degree water fog particle movement velocity is relatively low, and the water mist after electrification is also easier to be collected by collecting electrode and remove；Water mist is collected
After dirt electrode is collected, collecting electrode surface can be cleaned, can avoid the problem of collection efficiency declines due to dust accumulation is excessive；Water mist rises
To enhancing plasma except gray haze effect, enhancing plasma sterilization effect and enhancing plasma remove formaldehyde, TVOCs and bacterium
Etc. harmful substances effect, dissolve nitrogen oxides and ozone and automatically cleaning collecting electrode five heavy functions；Utilize photocatalysis original
Reason, is provided with high-intensity light source, it is intended to further decrease ozone and nitrogen oxidation in the gas outlet of plasma air conditioning device
Object concentration, also, the effect of water mist plasma air conditioning can be further enhanced.
2. a kind of automatically cleaning plasma air Opsonizing method according to claim 1, which is characterized in that the water mist
Particle is the carrier of harmful substance, and water mist will not be taken out of gas outlet by air-flow, but enter plasma charging area and accumulation area
It is collected afterwards by collecting electrode.
3. a kind of automatically cleaning plasma air Opsonizing method according to claim 1, which is characterized in that the water mist
In dissolved air freshener or pernicious gas cosolvent, such as hydrogen peroxide or alimentary acetic acid or dietary alkali.
4. a kind of automatically cleaning plasma air Opsonizing method according to claim 1, which is characterized in that the water mist
It is the subtle droplet generated by ultrasonic wave or high-pressure fog mode.
5. a kind of automatically cleaning plasma air Opsonizing method according to claim 1, which is characterized in that the hair mist
Being brought up in water tank has water plant.
6. a kind of automatically cleaning plasma air conditioning device, which is characterized in that from top to bottom respectively by air box, photocatalysis
Case, purifying box and four sections in series of hair fog case form, wherein：
It is provided with one or several fans in air box, passes through purifying box and photocatalysis box for certain driving air-flow；
Photocatalysis box several light sources is arranged is constituted in the surrounding of a babinet, and light beam of light source is projected to center and lower section；
Purifying box is mounted in metal chest by array group by several discharge cells and is made, each discharge cell includes a group
Composite electrode and a collecting electrode pipe, compound electrode, which is arranged on the axle center of collecting electrode pipe, constitutes a discharge cell；Electric discharge
The compound electrode of unit and the high-voltage output end of high voltage power supply connect, and the low-voltage output of collecting electrode pipe and high voltage power supply connects
It connects；Collecting electrode pipe is a metal circular tube, and compound electrode is replaced by several corona electrode rings and several electric field electrode rings
It being connected in a metal shaft and constitutes cylindrical compound electrode, each corona electrode ring is clipped between two electric field electrode rings,
The function of corona electrode ring is transmitting charge（Electronics or ion）, for enhancing electric field, collecting electrode pipe is used for electric field electrode ring
Collect gray haze and water fog particle；
It is provided with ultrasonic wave fog emitter or compression sprayer in hair fog case, compression sprayer is by booster water pump and atomizer
Composition, booster water pump outlet pipe is upward, and booster water pump water outlet pipe end is provided with atomizer, sends out the head cover and four of fog case
The top of all side walls is all provided with there are many aperture, is entered water tank from the aperture on surrounding side wall convenient for air and is mixed with water mist, then leads to
The aperture crossed on head cover enters in purifying box, and the water for being also conducive to flow back from purifying box can return to hair fog case by aperture.
7. a kind of automatically cleaning plasma air conditioning device according to claim 6, which is characterized in that the corona
Electrode retaining collar is made of conductive fiber, such as carbon fiber, electric conductive oxidation fibres, woven wire.
8. a kind of automatically cleaning plasma air conditioning device according to claim 6, which is characterized in that the combination
The electric field electrode ring diameter of electrode is more than corona electrode ring diameter.
9. a kind of automatically cleaning plasma air conditioning device according to claim 6, which is characterized in that the dust
The inner wall of electrode tube and the electric field electrode ring surface of compound electrode do transpassivation and hydrophobic treatment, improve its surface resistivity, and
Reduce adsorption capacity of its surface to dust and water mist.
10. a kind of automatically cleaning plasma air conditioning device according to claim 6, which is characterized in that the light
Light source in catalyst container is semiconductor light source or glow discharge spot lamp, and the emission spectrum of light source is between 1.0-8.0eV.
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| CN201710169741.6A CN108620236A (en) | 2017-03-21 | 2017-03-21 | A kind of automatically cleaning plasma air Opsonizing method and device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111467551A (en) * | 2020-04-16 | 2020-07-31 | 四川大学 | Aerosol spreading virus inactivation device based on atomization, heating and corona discharge multi-effect synergy |
| CN113813425A (en) * | 2021-09-26 | 2021-12-21 | 大连赛纳科技有限公司 | Atmospheric pressure atomization plasma efficient sterilization device and method |
| CN117537433A (en) * | 2024-01-10 | 2024-02-09 | 新乡大豫物理农业装备有限公司 | High-capacity exchange plasma air purifying device |
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