CN110394038B - Device and method for purifying air by using low-temperature plasma activation water - Google Patents
Device and method for purifying air by using low-temperature plasma activation water Download PDFInfo
- Publication number
- CN110394038B CN110394038B CN201910729711.5A CN201910729711A CN110394038B CN 110394038 B CN110394038 B CN 110394038B CN 201910729711 A CN201910729711 A CN 201910729711A CN 110394038 B CN110394038 B CN 110394038B
- Authority
- CN
- China
- Prior art keywords
- low
- temperature plasma
- electrode column
- voltage
- water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 79
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000000678 plasma activation Methods 0.000 title claims description 15
- 230000000903 blocking effect Effects 0.000 claims abstract description 33
- 238000009692 water atomization Methods 0.000 claims abstract description 20
- 230000007246 mechanism Effects 0.000 claims abstract description 15
- 230000000694 effects Effects 0.000 claims abstract description 12
- 238000001994 activation Methods 0.000 claims description 48
- 230000004913 activation Effects 0.000 claims description 48
- 239000003570 air Substances 0.000 claims description 46
- 239000007789 gas Substances 0.000 claims description 41
- 239000008223 sterile water Substances 0.000 claims description 19
- 239000007921 spray Substances 0.000 claims description 16
- 239000011521 glass Substances 0.000 claims description 14
- 239000010453 quartz Substances 0.000 claims description 13
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 13
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 12
- 239000002131 composite material Substances 0.000 claims description 12
- 238000000889 atomisation Methods 0.000 claims description 10
- 229910052786 argon Inorganic materials 0.000 claims description 7
- 230000004888 barrier function Effects 0.000 claims description 7
- 239000000919 ceramic Substances 0.000 claims description 7
- 210000003298 dental enamel Anatomy 0.000 claims description 7
- 239000001307 helium Substances 0.000 claims description 6
- 229910052734 helium Inorganic materials 0.000 claims description 6
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims description 6
- 229910052760 oxygen Inorganic materials 0.000 claims description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 5
- 239000001301 oxygen Substances 0.000 claims description 5
- 239000011810 insulating material Substances 0.000 claims description 3
- 239000007769 metal material Substances 0.000 claims description 3
- 230000001788 irregular Effects 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims 1
- 238000005507 spraying Methods 0.000 claims 1
- 241000233866 Fungi Species 0.000 abstract description 8
- 230000002779 inactivation Effects 0.000 abstract description 7
- 241000894006 Bacteria Species 0.000 abstract description 3
- 241000894007 species Species 0.000 abstract 1
- 210000002381 plasma Anatomy 0.000 description 60
- 239000010410 layer Substances 0.000 description 24
- 238000004659 sterilization and disinfection Methods 0.000 description 16
- 210000000481 breast Anatomy 0.000 description 11
- 230000000052 comparative effect Effects 0.000 description 8
- 238000002347 injection Methods 0.000 description 7
- 239000007924 injection Substances 0.000 description 7
- 230000003213 activating effect Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 4
- 230000002538 fungal effect Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000033116 oxidation-reduction process Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000003642 reactive oxygen metabolite Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 239000000443 aerosol Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 239000007845 reactive nitrogen species Substances 0.000 description 3
- 230000001954 sterilising effect Effects 0.000 description 3
- 241000588724 Escherichia coli Species 0.000 description 2
- 241000588729 Hafnia alvei Species 0.000 description 2
- 241000192130 Leuconostoc mesenteroides Species 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 2
- 240000004808 Saccharomyces cerevisiae Species 0.000 description 2
- 235000014680 Saccharomyces cerevisiae Nutrition 0.000 description 2
- 241000191967 Staphylococcus aureus Species 0.000 description 2
- 241000191963 Staphylococcus epidermidis Species 0.000 description 2
- 239000012080 ambient air Substances 0.000 description 2
- 210000000170 cell membrane Anatomy 0.000 description 2
- 238000003958 fumigation Methods 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000006907 apoptotic process Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 210000004027 cell Anatomy 0.000 description 1
- 210000002421 cell wall Anatomy 0.000 description 1
- 210000000805 cytoplasm Anatomy 0.000 description 1
- 231100000433 cytotoxic Toxicity 0.000 description 1
- 230000001472 cytotoxic effect Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 239000000645 desinfectant Substances 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000005281 excited state Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000005283 ground state Effects 0.000 description 1
- XLYOFNOQVPJJNP-ZSJDYOACSA-N heavy water Substances [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 description 1
- 230000002147 killing effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 208000030159 metabolic disease Diseases 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000017074 necrotic cell death Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/32—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by electrical effects other than those provided for in group B01D61/00
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/80—Employing electric, magnetic, electromagnetic or wave energy, or particle radiation
- B01D2259/818—Employing electrical discharges or the generation of a plasma
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
The invention discloses a device and a method for purifying air by using low-temperature plasma activated water, comprising a low-temperature plasma generating device and an activated water atomizing device; the low-temperature plasma generating device comprises a power supply, an insulating container and a plasma generating mechanism arranged in the insulating container; the plasma generating mechanism comprises an electrode array plate, a porous electrode column and a blocking medium tube; the electrode array plate comprises a connecting plate and an electrode column array group which is arranged at the bottom of the connecting plate and consists of high-voltage electrode columns; through holes matched with the high-voltage electrode column are distributed in the porous electrode column, and a blocking medium pipe is arranged between the through holes and the high-voltage electrode column; at least two air inlets for loading working gas are symmetrically arranged at the upper part of the side wall of the insulating container; the invention can efficiently inactivate both bacteria and fungi, has obvious inactivation effect on specific species of fungi, and can efficiently kill most fungi (> 98.5%) in the air within 30 min.
Description
Technical Field
The invention relates to the technical field of low-temperature plasmas, in particular to a device and a method for purifying air by using low-temperature plasmas to activate the water.
Background
At present, the air disinfection is usually carried out by ultraviolet radiation and ozone fumigation, the ultraviolet radiation requires that the disinfection part is fully exposed to ultraviolet rays to realize disinfection, and the proper temperature is required to be 20-40 ℃ when the ultraviolet radiation is used for air disinfection, the relative humidity is lower than 80%, otherwise, the sterilization effect is poor. Ozone fumigation and disinfection of air must be carried out under indoor unmanned conditions, and the air can only enter after waiting for at least 30min after disinfection.
The application of low-temperature plasma in the field of air disinfection and sterilization is just started, and great potential is shown. Related researches have been carried out at home and abroad to directly expose microbial aerosol to low-temperature plasma to inactivate microorganisms, but due to the reasons of short effective discharge distance (cm level) of the low-temperature plasma, small shape and size of a reactor, limited treatment air volume, high power consumption, high reaction control technical requirements and the like, complete reaction is difficult to realize, secondary pollution is easy to cause, and the direct application of the low-temperature plasma to the field of air disinfection and sterilization has certain limitation.
In recent years, it has been found that low-temperature plasma-treated water, i.e., low-temperature plasma-activated water (PAW), contains a large amount of Reactive Species (ROS), mainly Reactive Oxygen Species (ROS), including.O2 -、H2O2、·HO2OH, and the like, and Reactive Nitrogen Species (RNS), including NO, NO2、ONOO-And the like. The PAW can be used as a novel disinfectant to realize the rapid and efficient inactivation of Escherichia coli (Escherichia coli), Saccharomyces cerevisiae (Saccharomyces cerevisiae), Staphylococcus epidermidis (Staphylococcus epidermidis), Leuconostoc mesenteroides (Leuconostoc mesenteroides), Hafnia alvei (Hafnia alvei) and Staphylococcus aureus (Staphylococcus aureus).
Disclosure of Invention
The invention aims to provide a device and a method for purifying air by using low-temperature plasma activation, which aim to solve the problems in the prior art.
In order to achieve the purpose, the invention provides the following scheme:
the invention provides a device for purifying air by using low-temperature plasma activation, which comprises a low-temperature plasma generating device and an activated water atomizing device;
the low-temperature plasma generating device comprises a power supply, a jet orifice, an insulating container and a plasma generating mechanism arranged in the insulating container; the plasma generating mechanism comprises an electrode array plate, a porous electrode column and a blocking medium tube; the electrode array plate is connected with the high-voltage output end of the power supply, and the porous electrode column is connected with the low-voltage input end of the power supply and is grounded through a grounding wire;
the electrode array plate comprises a connecting plate and an electrode column array group which is arranged at the bottom of the connecting plate and consists of high-voltage electrode columns; through holes matched with the high-voltage electrode column are distributed in the porous electrode column, and a blocking medium pipe is arranged between the through holes and the high-voltage electrode column; at least two air inlets for loading working gas are symmetrically arranged at the upper part of the side wall of the insulating container; the jet orifice (9) is positioned below the porous electrode column (3) and is used for jetting low-temperature plasma excited in the through hole of the porous electrode column (3);
activation water atomization plant includes ultrasonic generator, activation chamber and the position of upwards transmission ultrasonic wave the atomizer of activation chamber one side, be provided with the atomizing spout on the atomizer for the activation water after the injection atomizing, activation chamber upper portion with the jet is connected, ultrasonic generator with be provided with the water route between the activation chamber, the water route links to each other with the water inlet, the water route with be separated by through the breast board between the activation chamber, there are a plurality of apertures that are used for into water on the breast board.
Furthermore, the power supply is a high-frequency high-voltage alternating current power supply, the frequency range is 6-19KHz, the power is 11-95W, and the output voltage is 11-45 kV.
Furthermore, the high-voltage electrode array, the high-voltage electrodes and the porous electrode columns are made of metal materials, and the blocking medium tube is made of insulating materials.
Furthermore, the blocking medium pipe is made of glass, quartz, ceramic or thin enamel.
Further, the working gas is argon, helium, oxygen, air or a mixed gas thereof.
Further, the flow rate of the working gas is 8-15L/min.
The invention also provides a method for purifying air by using the low-temperature plasma activated water prepared by the device, which comprises the following steps:
(1) introducing working gas, starting a power supply after the gas flow is stable, and exciting the low-temperature plasma generating device;
(2) adjusting the angle of the jet orifice to enable the jet orifice to form an angle of 45-75 degrees with the sterile water surface in the activation cavity;
(3) the activated water atomization device is started, and sterile water is introduced, so that the spray forms a parabola to be sprayed from the atomization nozzle at an angle of 55 degrees, and the effect of purifying air is achieved.
Further, the spatial concentration of the spray is 100-300mL/m3。
The invention discloses the following technical effects:
the device for purifying air by activating low-temperature plasma can generate large-size, long-distance and room-temperature low-temperature plasma by exciting dielectric barrier discharge (APDBD) in the working gas environment of argon, helium, oxygen, air or mixed gas thereof, the generated plasma can observe multi-pulse discharge current, arc discharge cannot occur due to stable flame, the intensity can be adjusted by changing the voltage of a high-voltage power supply, and the length can be adjusted by changing the flow rate of the working gas. The temperature of the generated low-temperature plasma is 30-35 ℃ measured by an infrared thermometer (GM900, Benetech), and the low-temperature plasma can be touched by a human body, so that the low-temperature plasma has a wider application prospect.
The invention has the advantages that the pores are reserved between the high-voltage electrode and the barrier medium pipe for the inflow of working gas, the working gas flow is dispersed into a plurality of parts by adopting the porous electrode column, the working gas flow can be more uniform, and then the working gas flow is excited by the high-voltage electrode matched with the through holes on the porous electrode column2 -NO content 8.35. mu.M3 -Content 2.95. mu.M, H2O2The content is 86.24 mu M, after standing for 5 days, the pH value of the low-temperature plasma activated water is stabilized at about 3.40, the oxidation-reduction potential value slightly falls back to 527.7mV, and NO is slightly reduced2 -The content is continuously reduced to nM level, NO3 -The content is increased to 14.41 mu M, H2O2The content continued to drop to 67.55. mu.M.
The atomized activated water generated by the device for purifying air by using low-temperature plasma activation can effectively inactivate bacteria and fungi, has obvious inactivation effect on specific fungi, and can effectively kill most of fungi in liquid within 1min>85.2%), 30min later, the fungal hypha and the fungal spore are etched and flattened, the cell membrane and the cell wall are broken, the cytoplasm is released, the cell can not maintain the stable structure and the cell membrane permeability, and finally the metabolic disorder, necrosis and even apoptosis of the fungal spore cell are caused. The inactivation mechanism of the atomized activated water is mainly NO under the acidic condition2 -/HNO2Decomposed and oxidized by oxygenThe formation ultimately produces the cytotoxic substances NO,. OH, and H2O2Strong oxidation property and high oxidation-reduction potential value.
In the process of preparing activated water, the invention sprays and processes sterile water at an angle of 45-75 degrees, low-temperature plasma is obliquely injected into the sterile water to cause trickle motion of the sterile water, and Ar and O in the ambient air are caused by plasma reaction such as excitation, ionization, recombination, oxidation reduction or decomposition reaction and the like2、N2H2O react with each other to generate a large amount of ROS and RNS, which play a role similar to 'cavitation' in sterile water, can improve the oxidation-reduction potential value, increase the content of active particles and enhance the killing effect on bacteria and fungi.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic view of a low temperature plasma generating apparatus according to the present invention;
FIG. 2 is a schematic view of a porous electrode column structure;
FIG. 3 is a schematic view of a balustrade structure;
FIG. 4 is a schematic view of a multi-layer structure of a blocking medium pipe in an embodiment;
the device comprises a power supply 1, an electrode array plate 2, a porous electrode column 3, an insulating container 4, a grounding wire 5, an air inlet 6, a high-voltage electrode column 7, a blocking medium pipe 8, a jet orifice 9, an ultrasonic generator 10, a water inlet 11, a breast plate 12, an atomizer 13, a water path 14, a small hole 15, an activation cavity 16 and an atomization nozzle 17.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
The invention provides a device for purifying air by using low-temperature plasma activation, which comprises a low-temperature plasma generating device and an activated water atomizing device;
the low-temperature plasma generating device comprises a power supply 1, an injection port 9, an insulating container 4 and a plasma generating mechanism arranged in the insulating container 4; the plasma generating mechanism comprises an electrode array plate 2, a porous electrode column 3 and a blocking medium tube 8; the insulating container 4 is provided with a wire hole for a lead to pass through, the electrode array plate 2 is connected with the high-voltage output end of the power supply 1 through the wire hole by a lead, and the porous electrode column 3 is connected with the low-voltage input end of the power supply 1 through the wire hole by a lead and is grounded through a grounding wire 5;
the electrode array plate 2 comprises a connecting plate and an electrode column array group which is arranged at the bottom of the connecting plate and consists of high-voltage electrode columns 7; through holes matched with the high-voltage electrode columns 7 are distributed in the porous electrode columns 3, and blocking medium tubes 8 are arranged between the through holes and the high-voltage electrode columns 7; the upper part of the side wall of the insulating container 4 is symmetrically provided with at least two air inlets 6 for loading working gas; the injection port 9 is positioned below the porous electrode column 3 and is used for injecting low-temperature plasma excited in the through hole of the porous electrode column 3;
activation water atomization plant includes ultrasonic generator 10, activation chamber 16 of upwards launching the ultrasonic wave and is located the atomizer 13 of 16 one sides in activation chamber, be provided with atomizing spout 17 on the atomizer 13 for the activation water after the injection atomizing, activation chamber 16 upper portion with jet orifice 9 is connected, ultrasonic generator 10 with be provided with water route 14 between the activation chamber 16, water route 14 links to each other with water inlet 11, water route 14 with be separated by breast board 12 between the activation chamber 16, there are a plurality of apertures 15 that are used for intaking on the breast board 12.
In the technical scheme, the power supply is a high-frequency high-voltage alternating current power supply, the frequency range is 6-19KHz, the power is 11-95W, and the output voltage is 11-45 kV.
In the technical scheme, the high-voltage electrode array plate, the high-voltage electrode and the porous electrode column are made of metal materials, and the blocking medium pipe is made of insulating materials.
In the above technical scheme, the blocking medium pipe is made of glass, quartz, ceramic or thin enamel.
In the technical scheme, the blocking medium tube is of a composite layer structure, the composite layer structure can be three or more than three layers, in the embodiment of the invention, the composite layer structure is of a five-layer structure, quartz, glass, ceramic, thin enamel and quartz are sequentially arranged from outside to inside, a micro interval is arranged between every two layers, connecting bodies which are made of the same material as the inner layer are arranged at two ends of the blocking medium tube, the inner surface of each layer of blocking medium tube is provided with pits which can be regular pits, namely the pits are conical, the diameter and the height of the cone are respectively one tenth of the diameter of the high-voltage electrode, or the pits can be irregular pits, the composite layer structure can avoid electric arcs to the maximum extent, when high-voltage alternating current is applied to the high-voltage electrode, a large number of fine fast pulse discharge channels (micro discharge) appear in a discharge gap, and charges accumulated on each surface of the composite blocking medium form an electric field opposite to the direction of, the limiting discharge current is weakened, and the pulse discharge current is often used as the basis for judging dielectric barrier discharge; in the discharge gap, photons, electrons, ground state atoms (or molecules), excited state atoms (or molecules), positive ions, and negative ions generated by activating the working gas are main components that react with the object to be processed.
In the above technical scheme, the working gas is argon, helium, oxygen, air or a mixed gas thereof.
In the technical scheme, the flow of the working gas is 8-15L/min.
The invention also provides a method for purifying air by using the low-temperature plasma activated water prepared by the device, which comprises the following steps:
(1) introducing working gas, starting a power supply after the gas flow is stable, and exciting the low-temperature plasma generating device;
(2) adjusting the angle of the jet orifice to enable the jet orifice to form an angle of 45-75 degrees with the sterile water surface in the activation cavity;
(3) starting the activated water atomization device, introducing sterile water to make the spray form a parabola spray from the atomization nozzle at an angle of 55 degrees, and making the space concentration be 100-300mL/m3And the effect of purifying air is achieved.
Example 1
A device for purifying air by using low-temperature plasma activation water comprises a low-temperature plasma generating device and an activated water atomizing device;
the low-temperature plasma generating device comprises a power supply, a jet orifice, an insulating container and a plasma generating mechanism arranged in the insulating container; the plasma generating mechanism comprises an electrode array plate, a porous electrode column and a blocking medium tube; the insulating container is provided with a wire hole for a lead to pass through, the electrode array plate is connected with the high-voltage output end of the power supply through the wire hole by a lead, and the porous electrode column is connected with the low-voltage input end of the power supply through the wire hole by a lead and is grounded through a grounding wire;
the electrode array plate comprises a connecting plate and an electrode column array group which is arranged at the bottom of the connecting plate and consists of high-voltage electrode columns; through holes matched with the high-voltage electrode column are distributed in the porous electrode column, and a blocking medium pipe is arranged between the through holes and the high-voltage electrode column; at least two air inlets for loading working gas are symmetrically arranged at the upper part of the side wall of the insulating container; the jet orifice is positioned below the porous electrode column and is used for jetting low-temperature plasma excited in the through hole of the porous electrode column; activation water atomization plant includes ultrasonic generator, activation chamber and the position of upwards transmission ultrasonic wave the atomizer of activation chamber one side, be provided with the atomizing spout on the atomizer for the activation water after the injection atomizing, activation chamber upper portion with the jet is connected, ultrasonic generator with be provided with the water route between the activation chamber, the water route links to each other with the water inlet, the water route with be separated by through the breast board between the activation chamber, there are a plurality of apertures that are used for into water on the breast board.
Wherein, the power supply is a high-frequency high-voltage alternating current power supply, the frequency range is 16KHz, the power is 65W, and the output voltage is 40 kV.
The high-voltage electrode array plate, the high-voltage electrode and the porous electrode column are made of copper materials.
The blocking medium pipe is of a composite layer structure, the composite layer structure is of a five-layer structure, quartz, glass, ceramic, thin enamel and quartz are sequentially arranged from outside to inside, a tiny interval is arranged between every two layers, a pit is arranged on the inner surface of each layer of the blocking medium pipe, the pit is a regular pit, namely the pit is conical, and the diameter and the height of the cone are respectively one tenth of the diameter of the high-voltage electrode.
The working gas is the mixed gas of argon, helium and oxygen with equal volume.
The working gas flow rate was 13L/min.
The invention also provides a method for purifying air by using the low-temperature plasma activated water prepared by the device, which comprises the following steps:
(1) introducing working gas, starting a power supply after the gas flow is stable, and exciting the low-temperature plasma generating device;
(2) adjusting the angle of the spray opening to enable the spray opening to form an angle of 55 degrees with the sterile water surface in the activation cavity;
(3) starting the activated water atomization device, introducing sterile water, and making the spray form a parabola spray from the atomization nozzle at an angle of 55 degrees to ensure that the spatial concentration is 200mL/m3And the effect of purifying air is achieved.
Example 2
A device for purifying air by using low-temperature plasma activation water comprises a low-temperature plasma generating device and an activated water atomizing device;
the low-temperature plasma generating device comprises a power supply, a jet orifice, an insulating container and a plasma generating mechanism arranged in the insulating container; the plasma generating mechanism comprises an electrode array plate, a porous electrode column and a blocking medium tube; the insulating container is provided with a wire hole for a lead to pass through, the electrode array plate is connected with the high-voltage output end of the power supply through the wire hole by a lead, and the porous electrode column is connected with the low-voltage input end of the power supply through the wire hole by a lead and is grounded through a grounding wire;
the electrode array plate comprises a connecting plate and an electrode column array group which is arranged at the bottom of the connecting plate and consists of high-voltage electrode columns; through holes matched with the high-voltage electrode column are distributed in the porous electrode column, and a blocking medium pipe is arranged between the through holes and the high-voltage electrode column; at least two air inlets for loading working gas are symmetrically arranged at the upper part of the side wall of the insulating container; the jet orifice is positioned below the porous electrode column and is used for jetting low-temperature plasma excited in the through hole of the porous electrode column;
activation water atomization plant includes ultrasonic generator, activation chamber and the position of upwards transmission ultrasonic wave the atomizer of activation chamber one side, be provided with the atomizing spout on the atomizer for the activation water after the injection atomizing, activation chamber upper portion with the jet is connected, ultrasonic generator with be provided with the water route between the activation chamber, the water route links to each other with the water inlet, the water route with be separated by through the breast board between the activation chamber, there are a plurality of apertures that are used for into water on the breast board.
Wherein, the power is a high-frequency high-voltage alternating current power supply, the frequency range is 6KHz, the power is 95W, and the output voltage is 11 kV.
The high-voltage electrode array plate, the high-voltage electrode and the porous electrode column are made of copper materials.
The blocking medium pipe is of a composite layer structure, the composite layer structure is of a four-layer structure and comprises quartz, glass, ceramics and thin enamel from outside to inside in sequence, a tiny interval is arranged between every two layers, and the inner surface of each layer of blocking medium pipe is an uneven surface formed by uniformly distributed conical pits; the cone diameter and height are each one tenth of the diameter of the high voltage electrode.
The working gas is helium.
The working gas flow rate was 15L/min.
The invention also provides a method for purifying air by using the low-temperature plasma activated water prepared by the device, which comprises the following steps:
(1) introducing working gas, starting a power supply after the gas flow is stable, and exciting the low-temperature plasma generating device;
(2) adjusting the angle of the jet orifice to enable the jet orifice to form an angle of 45 degrees with the water surface of the sterile water in the activation cavity;
(3) starting the activated water atomization device, introducing sterile water, and making the spray form a parabola spray from the atomization nozzle at an angle of 55 degrees to ensure that the spatial concentration is 300mL/m3And the effect of purifying air is achieved.
Example 3
A device for purifying air by using low-temperature plasma activation water comprises a low-temperature plasma generating device and an activated water atomizing device;
the low-temperature plasma generating device comprises a power supply, a jet orifice, an insulating container and a plasma generating mechanism arranged in the insulating container; the plasma generating mechanism comprises an electrode array plate, a porous electrode column and a blocking medium tube; the insulating container is provided with a wire hole for a lead to pass through, the electrode array plate is connected with the high-voltage output end of the power supply through the wire hole by a lead, and the porous electrode column is connected with the low-voltage input end of the power supply through the wire hole by a lead and is grounded through a grounding wire;
the electrode array plate comprises a connecting plate and an electrode column array group which is arranged at the bottom of the connecting plate and consists of high-voltage electrode columns; through holes matched with the high-voltage electrode column are distributed in the porous electrode column, and a blocking medium pipe is arranged between the through holes and the high-voltage electrode column; at least two air inlets for loading working gas are symmetrically arranged at the upper part of the side wall of the insulating container; the jet orifice is positioned below the porous electrode column and is used for jetting low-temperature plasma excited in the through hole of the porous electrode column;
activation water atomization plant includes ultrasonic generator, activation chamber and the position of upwards transmission ultrasonic wave the atomizer of activation chamber one side, be provided with the atomizing spout on the atomizer for the activation water after the injection atomizing, activation chamber upper portion with the jet is connected, ultrasonic generator with be provided with the water route between the activation chamber, the water route links to each other with the water inlet, the water route with be separated by through the breast board between the activation chamber, there are a plurality of apertures that are used for into water on the breast board.
Wherein, the power supply is a high-frequency high-voltage alternating current power supply, the frequency range is 19KHz, the power is 11W, and the output voltage is 45 kV.
The high-voltage electrode array plate, the high-voltage electrode and the porous electrode column are made of copper materials.
The blocking medium pipe is of a composite layer structure which is of a three-layer structure, quartz, glass and quartz are sequentially arranged from outside to inside, a small interval is arranged between every two layers, pits are arranged on the inner surface of each layer of the blocking medium pipe and are regular pits, namely the pits are conical, and the diameter and the height of each cone are one tenth of the diameter of the high-voltage electrode.
The working gas is argon.
The flow rate of the working gas is 8L/min.
The invention also provides a method for purifying air by using the low-temperature plasma activated water prepared by the device, which comprises the following steps:
(1) introducing working gas, starting a power supply after the gas flow is stable, and exciting the low-temperature plasma generating device;
(2) adjusting the angle of the jet orifice to enable the jet orifice to form an angle of 75 degrees with the water surface of the sterile water in the activation cavity;
(3) starting the activated water atomization device, introducing sterile water, and making the spray form a parabola spray from the atomization nozzle at an angle of 55 degrees to ensure that the spatial concentration is 100mL/m3And the effect of purifying air is achieved.
Comparative example 1
The difference from example 1 is that the interior of the barrier medium tube of comparative example 1 is free of pits.
Comparative example 2
The difference from example 1 is that the barrier medium tube of comparative example 2 is a single layer of quartz and has the same pit structure as example 1.
Comparative example 3
The difference from example 1 is that the porous electrode column of comparative example 3 has only one hole, and correspondingly, the high voltage electrode array plate of comparative example 3 also has only one high voltage electrode column.
Experiment:
taking a working area of a 304L indoor superclean bench as an exposure cabin, carrying out ultraviolet disinfection on the exposure cabin for 20min, opening a glass door to exchange air between the exposure cabin and indoor air for 1h, closing the glass door, sealing the exposure cabin, and starting to collect a background group sample. After the glass door was opened to allow the exposure chamber to exchange with the indoor air for 1 hour, the devices for purifying air by activating water using low-temperature plasma of examples 1 to 3 and comparative examples 1 to 3 were placed in the exposure chamber, the glass door was closed to seal the exposure chamber, and the device for purifying air by activating water using low-temperature plasma (sterile water volume 75mL) was started for 30 minutes, and then samples of the exposure group were collected. And (3) opening the glass door to exchange the exposure cabin with indoor air for 1h, placing the device for purifying air by using low-temperature plasma activated water in the exposure cabin, closing the glass door to seal the exposure cabin, not starting the low-temperature plasma emission device, starting the activated water atomization device to atomize sterile water (with the volume of 75mL) for 30min, and collecting a control group sample. The fungal aerosols were collected by plate sedimentation and BioStage sampler (skcinc, origin-Four, PA, USA) in two different ways, and the results are shown in table 1, where the inactivation efficiencies are based on the control.
TABLE 1
The results show that the activity and stability of the low-temperature plasma activated water are utilized, the air fungus aerosol is treated by an atomization method, and the inactivation efficiency is more than 90%. If the contact time and the relative concentration of the low-temperature plasma activated water and the ambient air are increased, the inactivation efficiency is obviously improved. Compared with the traditional air sterilization and disinfection mode, the low-temperature plasma atomization disinfection method ensures the permeation and disinfection effects on the complex and difficult-to-reach places, the disinfection process time is short, and the process has no noise or ultrasonic pollution.
The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention can be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are within the scope of the present invention defined by the claims.
Claims (8)
1. A device for purifying air by using low-temperature plasma activated water is characterized by comprising a low-temperature plasma generating device and an activated water atomizing device;
the low-temperature plasma generating device comprises a power supply (1), a jet orifice (9), an insulating container (4) and a plasma generating mechanism arranged in the insulating container (4); the plasma generating mechanism comprises an electrode array plate (2), a porous electrode column (3) and a blocking medium pipe (8); the electrode array plate (2) is connected with a high-voltage output end of the power supply (1), and the porous electrode column (3) is connected with a low-voltage input end of the power supply (1) and is grounded through a grounding wire (5);
the electrode array plate (2) comprises a connecting plate and an electrode column array group which is arranged at the bottom of the connecting plate and consists of high-voltage electrode columns (7); through holes matched with the high-voltage electrode column (7) are distributed in the porous electrode column (3), and a blocking medium pipe (8) is arranged between each through hole and the high-voltage electrode column (7); at least two air inlets (6) for loading working gas are symmetrically arranged at the upper part of the side wall of the insulating container (4); the jet orifice (9) is positioned below the porous electrode column (3) and is used for jetting low-temperature plasma excited in the through hole of the porous electrode column (3);
the activated water atomization device comprises an ultrasonic generator (10) which emits ultrasonic waves upwards, an activation cavity (16) and an atomizer (13) which is located on one side of the activation cavity (16), wherein an atomization nozzle (17) is arranged on the atomizer (13) and used for spraying atomized activated water, the upper part of the activation cavity (16) is communicated with the jet orifice (9), a water channel (14) is arranged between the ultrasonic generator (10) and the activation cavity (16), the water channel (14) is communicated with the water inlet (11), the water channel (14) is separated from the activation cavity (16) through a barrier plate (12), and a plurality of small holes (15) used for water inlet are formed in the barrier plate (12);
the spray opening (9) and the sterile water surface in the activation cavity (16) form an angle of 45-75 degrees;
the blocking medium pipe (8) is of a composite layer structure, the composite layer structure is of a five-layer structure and sequentially comprises quartz, glass, ceramics, thin enamel and quartz from outside to inside, a micro interval is arranged between every two layers, a pit is arranged on the inner surface of each layer and is a regular pit, the regular pit is conical, the diameter and height of the cone are respectively one tenth of the diameter of the high-voltage electrode column (7), or the pit is an irregular pit.
2. The apparatus for purifying air using low temperature plasma activation according to claim 1, wherein the power supply is a high frequency high voltage ac power supply, the frequency range is 6-19KHz, the power is 11-95W, and the output voltage is 11-45 kV.
3. The device for purifying air by using low-temperature plasma activation according to claim 1, wherein the high-voltage electrode array plate (2), the high-voltage electrode column (7) and the porous electrode column (3) are made of metal materials, and the blocking medium pipe (8) is made of an insulating material.
4. Device for purifying air by means of low-temperature plasma activation according to claim 3, characterized in that the blocking medium pipe (8) is made of glass, quartz, ceramic or thin enamel.
5. The apparatus for purifying air using low temperature plasma activation according to claim 1, wherein the working gas is argon, helium, oxygen, air or a mixture thereof.
6. The apparatus for purifying air using low temperature plasma activation according to claim 1, wherein the flow rate of the working gas is 8-15L/min.
7. A method for purifying air by low temperature plasma activation prepared by the apparatus of any one of claims 1 to 6, comprising the steps of:
(1) introducing working gas, starting a power supply after the gas flow is stable, and exciting the low-temperature plasma generating device;
(2) adjusting the angle of the jet orifice to enable the jet orifice to form an angle of 45-75 degrees with the sterile water surface in the activation cavity;
(3) the activated water atomization device is started, and sterile water is introduced, so that the spray forms a parabola to be sprayed from the atomization nozzle at an angle of 55 degrees, and the effect of purifying air is achieved.
8. The method as claimed in claim 7, wherein the spatial concentration of the spray is 100-300mL/m3。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910729711.5A CN110394038B (en) | 2019-08-08 | 2019-08-08 | Device and method for purifying air by using low-temperature plasma activation water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910729711.5A CN110394038B (en) | 2019-08-08 | 2019-08-08 | Device and method for purifying air by using low-temperature plasma activation water |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110394038A CN110394038A (en) | 2019-11-01 |
| CN110394038B true CN110394038B (en) | 2020-09-25 |
Family
ID=68327731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910729711.5A Expired - Fee Related CN110394038B (en) | 2019-08-08 | 2019-08-08 | Device and method for purifying air by using low-temperature plasma activation water |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110394038B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111526652A (en) * | 2020-04-30 | 2020-08-11 | 西安交通大学 | Device for promoting wound healing |
| CN112517264B (en) * | 2020-12-01 | 2024-08-13 | 中消天盾等离子科技(大连)有限公司 | Plasma activated solution atomization system and method for protecting activity of atomized solution |
| CN113639355B (en) * | 2021-08-18 | 2022-09-02 | 南京工业大学 | Plasma device integrating humidifying function and sterilizing function and using method |
| CN113630949B (en) * | 2021-08-30 | 2024-08-16 | 西安交通大学 | Large-area low-temperature plasma activated water mist generating device |
| CN113841735B (en) * | 2021-09-14 | 2023-04-28 | 大连理工大学 | Atmospheric air water mist plasma sterilization device and method for cheese sterilization |
| 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 |
| CN114477362B (en) * | 2022-02-24 | 2023-03-17 | 西安电子科技大学 | Plasma activated water device based on piezoelectric material |
| CN115414505A (en) * | 2022-08-31 | 2022-12-02 | 西安交通大学 | Sterilization device based on plasma activation spraying |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4954320A (en) * | 1988-04-22 | 1990-09-04 | The United States Of America As Represented By The Secretary Of The Army | Reactive bed plasma air purification |
| US20130272929A1 (en) * | 2012-04-06 | 2013-10-17 | EP Technologies LLC | Sanitization station using plasma activated fluid |
| CN104480669B (en) * | 2014-11-14 | 2016-11-09 | 西安交通大学 | The atomization of a kind of plasma is for the apparatus and method of sterilization of doing washing |
| CN105879671B (en) * | 2016-06-01 | 2018-08-28 | 清华大学合肥公共安全研究院 | Low temperature plasma air sterilization cleaning module |
| CN206295464U (en) * | 2016-08-29 | 2017-07-04 | 荣烜曼 | A kind of plasma-activated water is used for the device of clinical sterilizing |
| KR20190043257A (en) * | 2017-10-18 | 2019-04-26 | 한국전기연구원 | System and method for producing plasma activated water |
| CN207778604U (en) * | 2017-11-16 | 2018-08-28 | 无锡市人民医院 | A kind of novel and multifunctional air cleaner |
| CN108097188B (en) * | 2017-12-26 | 2019-09-20 | 杭州左纳实业有限公司 | The gasification installation of plasma pyrolysis residual oil and exhaust gas |
| CN108408843B (en) * | 2018-03-14 | 2021-06-01 | 大连民族大学 | Plasma activated water generating device |
| CN209047428U (en) * | 2018-04-23 | 2019-07-02 | 江苏省农业科学院 | A kind of leaf vegetables cleaning and fresh-keeping device based on non-thermal plasma trap |
| CN108821392B (en) * | 2018-06-21 | 2021-04-13 | 大连民族大学 | Plasma activated water preparation device |
| CN109805249B (en) * | 2019-02-21 | 2022-06-14 | 华南理工大学 | Electromagnetic induction coupling radio frequency discharge plasma device and method for cleaning and preserving fruits and vegetables |
-
2019
- 2019-08-08 CN CN201910729711.5A patent/CN110394038B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN110394038A (en) | 2019-11-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110394038B (en) | Device and method for purifying air by using low-temperature plasma activation water | |
| CN110461080B (en) | Low-temperature plasma generating device and method for preparing activated water by using same | |
| CN102897892B (en) | Enhanced-type capillary-needle discharging plasma water treatment device | |
| KR101848311B1 (en) | Spraying Type Sterilization Apparatus And Method Using Complex Disinfectant Fluids and Plasma Jet | |
| Schneider et al. | Separation of VUV/UV photons and reactive particles in the effluent of a He/O2 atmospheric pressure plasma jet | |
| JP5598770B2 (en) | Improved air decontamination equipment | |
| CN203912302U (en) | Plasma system | |
| CN104936371B (en) | A kind of coreless armature dielectric impedance structure | |
| CN202288940U (en) | Atmospheric pressure low temperature plasma jet sterilizer | |
| CN106132446A (en) | Air purification device and method | |
| CN110913553B (en) | High-efficient plasma activated water produces equipment | |
| CN108260269A (en) | Low temperature plasma generating device and gas handling system | |
| CN203731562U (en) | Air cleaning unit | |
| KR102154766B1 (en) | System for disinfection and cultivation of agricultural products using Thunderbolt discharge of electricity and micro bubble water | |
| KR20200111576A (en) | Odor removal system using Thunderbolt discharge of electricity and micro bubble water | |
| CN113175721A (en) | Plasma humidifier | |
| CN103274501B (en) | A kind of method of atmosphere pressure plasma jet flow liquid phase algae removal and device | |
| US20190313582A1 (en) | Method and Apparatuses for Cold Plasma in Agriculture | |
| CN115108625A (en) | Organic pollutant wastewater treatment device and wastewater treatment method | |
| CN216136390U (en) | Nanometer atomizing device for low-temperature plasma activated water disinfection | |
| TWI691237B (en) | Atmospheric-pressure plasma jet generating device | |
| CN112717178A (en) | Plasma activated water spray disinfection gate | |
| CN111604180A (en) | Strong ionization discharge sprayer and working method thereof | |
| CN221509838U (en) | Variable channel plasma mixed discharge device | |
| KR100460156B1 (en) | Apparatus for spraying ozone fog |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200925 |