CN106378258A - Air purification equipment and air purification method based on low temperature plasma reinforced centrifugal electrostatic field - Google Patents
Air purification equipment and air purification method based on low temperature plasma reinforced centrifugal electrostatic field Download PDFInfo
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- CN106378258A CN106378258A CN201610828431.6A CN201610828431A CN106378258A CN 106378258 A CN106378258 A CN 106378258A CN 201610828431 A CN201610828431 A CN 201610828431A CN 106378258 A CN106378258 A CN 106378258A
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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
- B03C3/02—Plant or installations having external electricity supply
- B03C3/04—Plant or installations having external electricity supply dry type
- B03C3/14—Plant or installations having external electricity supply dry type characterised by the additional use of mechanical effects, e.g. gravity
- B03C3/15—Centrifugal forces
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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
- B03C3/01—Pretreatment of the gases prior to electrostatic precipitation
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- Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
The invention discloses air purification equipment and an air purification method which are based on a low temperature plasma reinforced centrifugal electrostatic field. A low temperature plasma generator, a centrifugal electrostatic field generation device and a sucking pump are connected sequentially; the centrifugal electrostatic field generation device is filled with nanofiber; air is forced to enter the low temperature plasma generator by the sucking pump; by employing low temperature plasma, microorganisms in the air are deactivated, gaseous pollutants are subjected to oxidative degradation and particulate matters are charged; the air treated by the low temperature plasma enters the centrifugal electrostatic field; and the charged particulate matters are removed by the centrifugal electrostatic field, and clean air is obtained. The air purification equipment is light and portable, and the air purification equipment and the air purification method are low in resource consumption and high in removal efficiency, and can be widely used in control on pollution sources in an indoor environment and public places.
Description
Technical field
The present invention relates to air cleaner, it is based on the enhanced centrifugal electrostatic field of low temperature plasma particularly to a kind of
Remove air cleaning facility and the method for in the air fine particle, microorganism and gaseous contaminant.
Background technology
Air pollution seriously threatens health, and wherein fine particle can lead to inflammation to be damaged after breathing enters lung
Wound, oxidative damage and genetic damage, cause acute cardiovascular effect.Microorganism (antibacterial, funguses, virus, anaphylactogen, toxin etc.)
It is the important component part of particulate matter, moreover it is possible to cause the infectiousness diseases such as influenza, pulmonary tuberculosis in addition to oxidative stress and inflammation damnification
The disease such as disease, the respiratory system disease such as asthma, allergic rhinitises, and cancer and ill building syndrome.Therefore, research invention
Efficiently remove particulate matter, inactivation microorganism, the equipment of purify air and method particularly significant.
Traditional aerosol control technology includes filtration, absorption, ultraviolet, photochemical catalytic oxidation, ozonisation, electron ion transmitting
Deng, but these technology respectively have deficiency.For example, although filter membrane can remove particulate matter, gaseous contaminant of can not degrading, micro- life
Thing has the risk of growth and secondary release.Low temperature plasma and electrostatic field dedusting are two kinds and are increasingly used to indoor air purification
Method, but the research that both are combined with purify air is less.Reaction of low temperature plasma system keeps room temperature, can produce and live in a large number
Property species Oxidative demage cell, producing a large amount of accumulation leads to membranolysises, inactivation microorganism and oxidative degradation VOCs
(volatile organic matter), and particulate matter can be made charged, particulate matter is removed by subsequent treatment.The electrostatic field dedusting pressure loss
Little, power consumption little, only need routine cleaning, but particulate matter load electric charge less, in the electric field the time of staying shorter, classic flat-plate electrostatic
Field electric field dispersion, particulate matter removal efficiencies are relatively low.Therefore, research and development one kind can efficiently remove particulate matter, gaseous state and micro- simultaneously
Biological device, method is extremely important.
Content of the invention
It is an object of the invention to provide a kind of new air based on the enhanced centrifugal electrostatic field of low temperature plasma
Cleaning equipment and method, efficiently remove particulate in air, microorganism and gaseous contaminant simultaneously, and low energy consumption is low and secondary dirt
Dye is few.
Technical scheme is as follows：
A kind of air cleaning facility, including low-temperature plasma generator, centrifugal electrostatic field generator, nanofiber
And air pump.Wherein, the gas outlet of low-temperature plasma generator is connected with the inlet gas of centrifugal electrostatic field generator, from
The gas outlet of core type electrostatic field generator is connected with air pump, the nanofiber-filled chamber in centrifugal electrostatic field generator
In vivo.
Described low-temperature plasma generator is preferably the low-temperature plasma generator of dielectric barrier discharge enhancement mode.?
In one embodiment of the present of invention, described low-temperature plasma generator include quartz glass tube medium, stainless (steel) wire external electrode,
Electrode and power supply in molybdenum filament, wherein stainless (steel) wire external electrode are arranged on quartz glass tube media peripheral, and in molybdenum filament, electrode is located at stone
In English glass tubing medium, in stainless (steel) wire external electrode and molybdenum filament, electrode connects power supply respectively.
Described centrifugal electrostatic field generator is to produce centrifugal electrostatic field in a cavity, including being arranged on cavity
In a line ring-shaped electrode and the stick electrode passing through this coil shape electrode centers, line ring-shaped electrode and stick electrode are and lead
Electric metal is made, and is connected with high voltage power supply.In one embodiment of the invention, described centrifugal electrostatic field generator includes
Quartz glass tube, line ring-shaped electrode, stick electrode and high voltage power supply, stick electrode is located at the axis line position of quartz glass tube,
Coil shape electrode is looped around around stick electrode and is close to quartz glass inside pipe wall, and stick electrode and line ring-shaped electrode connect respectively
Connect high voltage power supply.
Nanofiber used is the filtering material of high ventilation, and such as electrostatic spinning is filled in centrifugal electrostatic field.
Between the air inlet of the gas outlet of low-temperature plasma generator and centrifugal electrostatic field generator, centrifugal quiet
All can be connected by silica gel tube between the gas outlet of electric field generating apparatus and air pump.In the presence of air pump, air is from low
The air inlet of isothermal plasma generator enters low-temperature plasma generator, enters back into centrifugal electrostatic field generating meanss, warp
The air of cleaning is obtained after crossing two-step purification.
Present invention also offers a kind of air purification method, first by air through Low Temperature Plasma Treating, Ran Houjin
Enter to be filled with the centrifugal electrostatic field of nanofiber, from the centrifugal electrostatic field air being after purifying out.
Specifically operation is above-mentioned air purification method：Low-temperature plasma generator, centrifugal electrostatic field are produced dress
Put and be sequentially connected with air pump, in wherein centrifugal electrostatic field generator, filling nanofiber, makes air enter by air pump
Enter low-temperature plasma generator, inactivate microorganism and the oxidative degradation VOCs of in the air using low temperature plasma, and make
Particulate matter is charged；Enter centrifugal electrostatic field from low-temperature plasma generator air out, remove electrically charged particle thing, obtain
Air after must purifying.
In said method, the low temperature plasma that low-temperature plasma generator is preferably dielectric barrier discharge enhancement mode is sent out
Raw device, can design different shape and working condition (as output voltage, frequency etc.) according to actual needs.Centrifugal electrostatic field produces
Generating apparatus can also adjusting parameter according to actual needs, the nanofiber of wherein filling selects the filtering material of high ventilation, such as quiet
Electrospun.
In said method, air mass flow is less, and centrifugal electrostatic field voltage is higher, and particulate matter removal efficiencies are higher.
The invention provides a kind of air cleaning facility based on the enhanced centrifugal electrostatic field of low temperature plasma and side
Method, is a kind of efficient air purifying process, can circulate and purify the air of a room for a long time, realize in the air gaseous state simultaneously
Pollutant, microorganism and particulate matter remove.This air cleaning facility and method resource consumption is few, light portable, removal efficiency
Height, can be widely applied to indoor environment and the control of public place polluter, protects health, before having good application
Scape.
Brief description
Fig. 1. air cleaning facility structural representation, wherein：Electrode, 4- quartz glass in 1- power supply, 2- earth lead, 3- molybdenum filament
Glass pipe medium, 5- stainless (steel) wire external electrode, 6- air inlet A, 7- gas outlet A, 8- line ring-shaped electrode, 9- stick electrode, 10- quartz
Glass tubing, 11- high voltage power supply, 12- air inlet B, 13- gas outlet B, 14- nanofiber, 15- air pump.
Fig. 2. particulate in air (0.3-20 μm) Size scattergram and concentration box line under the different test condition of embodiment 1
Figure, wherein：A the throughput of () and (b) is 5L/min, the throughput of (c) and (d) is 15L/min；A () and (c) is particulate matter grain
Footpath Spectral structure figure, (b) and (d) is particle concentration box traction substation.
Fig. 3. when in embodiment 1, general gas flow is 5L/min, particulate in air (0.3-20 μm) removal efficiency comparison diagram.
Fig. 4. under the test condition of different throughputs in embodiment 1, particulate in air (0.3-20 μm) removal efficiency compares
Figure.
Fig. 5. when in embodiment 1, general gas flow is 29.5L/min, the inactivation efficiency comparison figure of in the air cultivable bacteria.
In Fig. 2 to Fig. 5, magnitude of voltage " 10kV ", " 15kV " and " 17kV " represents the voltage of centrifugal electrostatic field, " etc. " represent
Open low temperature plasma.
Specific embodiment
Below in conjunction with the accompanying drawings, the present invention is expanded on further by embodiment, but limits the model of the present invention never in any form
Enclose.
Embodiment 1
In air cleaning facility shown in Fig. 1, dielectric impedance low-temperature plasma generator includes power supply 1, earth lead 2, molybdenum
Electrode 3, quartz glass tube medium 4, stainless (steel) wire external electrode 5, air inlet A6, gas outlet A7 in silk；Centrifugal electrostatic field produces
Device includes quartz glass tube 10, line ring-shaped electrode 8, stick electrode 9, high voltage power supply 11, air inlet B 12, gas outlet B 13,
Line ring-shaped electrode 8 is tightly embedded in quartz glass tube 10；Nanofiber 14 is filled in quartz glass tube 10；Dielectric impedance low temperature etc.
Plasma generator, centrifugal electrostatic field generator are connected by silica gel tube order with air pump 15 three.
Described dielectric impedance low temperature plasma can design different shape and working condition according to actual needs.Described from
The electrode of core type electrostatic field generator is conducting metal, its coil shape electrode 8 diameter 1mm, spacing 1.5cm between coil,
Stick electrode 9 diameter 5mm, quartz glass tube 10 length is 30cm, internal diameter 4cm, can adjusting parameter according to actual needs.Coil
Shape electrode 8, stick electrode 9 are all used as extraction electrode by fine wire and are connected high voltage power supply 11.
Nanofiber 14 used is the electrostatic spinning of high ventilation, can lift particulate matter removal efficiencies further.
The operating process of above-mentioned air cleaning facility is as follows：
A) open air pump, suitable flow (5～15L/min) is set；
B) open the high voltage power supply of centrifugal electrostatic field generator, to centrifugal electrostatic field the two poles of the earth add high pressure (10～
20kV)；
C) open the power supply of low-temperature plasma generator, input voltage is adjusted to 50V, regulating frequency makes input current
Greatly；
D) continuing purge air, at the end of first will low temperature plasma input voltage and centrifugal electrostatic field high voltage power supply electricity
Pressure is all adjusted to 0, turns off all power supplys.
It is simultaneously connected with air pump, optical particle counter (Optical Particle after centrifugal electrostatic field
Counter (OPC), flow 1.2L/min) and BioStage sampler (flow 28.3L/min), by low-temperature plasma
Particulate matter (0.3-20 μm), cultivable bacteria in surrounding air before and after body and centrifugal static electric field process, fungi concentration can be cultivated
Change, obtain Inactivation and removal efficiency under imposing a condition for this cleaning equipment, concrete operation step is as follows：
A) it is simultaneously connected with air pump and OPC, setting general gas flow is 5L/min or 15L/min, and other conditions parameter is successively
For no process, centrifugal electrostatic field voltage be 10kV, centrifugal electrostatic field voltage be 10kV and open low temperature plasma, centrifugation
Formula electrostatic field voltage is 15kV, centrifugal electrostatic field voltage is 15kV and opens low temperature plasma, each condition test time
For 5min；
B) it is simultaneously connected with air pump, OPC and BioStage (built-in antibacterial or fungi culture medium), setting general gas flow is
29.5L/min, other conditions parameter is followed successively by no process, centrifugal electrostatic field voltage is 15kV, centrifugal electrostatic field voltage is
15kV and unlatching low temperature plasma, each condition test time is 10min, number plate, fungi culture medium after bacteria culture media 48h
Number plate after 72h.
This air cleaning facility removal efficiency at different conditions is as shown in Figures 2 to 4：
Fig. 2 is particulate matter (0.3-20 μm) particle diameter Spectral structure and concentration box traction substation under different test conditions, from (a) of Fig. 2,
As can be seen that after opening cleaning equipment, all having been declined by the in the air different-grain diameter section particle concentration of equipment in (c),
And voltage is higher, removal effect is better, and low temperature plasma has enhanced effect to centrifugal electrostatic field removal efficiency；From Fig. 2
(b), (d) in as can be seen that flow less, the efficiency of cleaning equipment is higher；
Fig. 3 shows the removal efficiency that general gas flow is particulate in air during 5L/min (0.3-20 μm), can from Fig. 3
To find out, voltage is higher, and removal efficiency is higher, and low temperature plasma is to the reinforced effects of low-voltage electrostatic field removal efficiency more
Greatly, when centrifugal electrostatic field voltage is 17kV and opens low temperature plasma, particulate matter (0.3-20 μm) removal efficiency highest, be
97.1%；
Fig. 4 shows the removal efficiency of particulate in air (0.3-20 μm) under different test conditions, can from Fig. 4
Go out, under low discharge (5L/min or 15L/min), when centrifugal electrostatic field voltage is 15kV and opens low temperature plasma, granule
Thing (0.3-20 μm) removal efficiency can reach 90%；
Fig. 5 shows the inactivation efficiency that general gas flow is in the air cultivable bacteria during 29.5L/min, permissible from Fig. 5
Find out, when centrifugal electrostatic field voltage is 15kV and opens low temperature plasma, the inactivation efficiency of cultivable bacteria can reach
More than 95%.
Claims (10)
1. a kind of air cleaning facility, including low-temperature plasma generator, centrifugal electrostatic field generator, nanofiber and
Air pump, wherein, the gas outlet of low-temperature plasma generator is connected with the inlet gas of centrifugal electrostatic field generator, centrifugation
The gas outlet of formula electrostatic field generator is connected with air pump, the nanofiber-filled cavity in centrifugal electrostatic field generator
Interior.
2. air cleaning facility as claimed in claim 1 is it is characterised in that described low-temperature plasma generator hinders for medium
The low-temperature plasma generator of gear electric discharge enhancement mode.
3. air cleaning facility as claimed in claim 2 is it is characterised in that described low-temperature plasma generator includes quartz
Electrode and power supply in glass tubing medium, stainless (steel) wire external electrode, molybdenum filament, wherein stainless (steel) wire external electrode is arranged on quartz glass tube
Media peripheral, in molybdenum filament, electrode is located in quartz glass tube medium, and in stainless (steel) wire external electrode and molybdenum filament, electrode connects electricity respectively
Source.
4. air cleaning facility as claimed in claim 1 is it is characterised in that described centrifugal electrostatic field generator includes one
Individual cavity, and it is arranged on the line ring-shaped electrode in cavity and the stick electrode passing through this coil shape electrode centers, coil shape electricity
Pole and stick electrode are connected with high voltage power supply.
5. air cleaning facility as claimed in claim 4 is it is characterised in that described centrifugal electrostatic field generator includes stone
English glass tubing, line ring-shaped electrode, stick electrode and high voltage power supply, stick electrode is located at the axis line position of quartz glass tube, line
Ring-shaped electrode is looped around around stick electrode and is close to quartz glass inside pipe wall, and stick electrode and line ring-shaped electrode connect respectively
High voltage power supply.
6. air cleaning facility as claimed in claim 1 is it is characterised in that described nanofiber is electrostatic spinning.
7. air cleaning facility as claimed in claim 1 is it is characterised in that the gas outlet of described low-temperature plasma generator
And the air inlet of centrifugal electrostatic field generator between, logical between the gas outlet of centrifugal electrostatic field generator and air pump
Cross silica gel tube to connect.
8. a kind of air purification method, first by air through Low Temperature Plasma Treating, subsequently into being filled with nanofiber
Centrifugal electrostatic field, from centrifugal electrostatic field out be purify after air.
9. air purification method as claimed in claim 8 is it is characterised in that by low-temperature plasma generator, centrifugal quiet
Electric field generating apparatus and air pump are sequentially connected, and fill nanofiber in centrifugal electrostatic field generator, by pumping
Pump admits air into low-temperature plasma generator, inactivates microorganism and the oxidative degradation of in the air using low temperature plasma
VOCs, and make particulate matter charged；Enter centrifugal electrostatic field from low-temperature plasma generator air out, remove charged
Particulate matter, obtains air after purifying.
10. air purification method as claimed in claim 9 is it is characterised in that described low-temperature plasma generator is using Jie
The low-temperature plasma generator of matter barrier discharge enhancement mode.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610828431.6A CN106378258B (en) | 2016-09-18 | 2016-09-18 | The centrifugal electrostatic field air cleaning facility and method of low temperature plasma enhancing |
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| CN201610828431.6A CN106378258B (en) | 2016-09-18 | 2016-09-18 | The centrifugal electrostatic field air cleaning facility and method of low temperature plasma enhancing |
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| CN106378258B CN106378258B (en) | 2018-03-30 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108391365A (en) * | 2018-02-24 | 2018-08-10 | 佛山市万善环保科技有限公司 | A kind of double medium low temperature plasma generating means of electromagnetic induction coupling |
| CN111437718A (en) * | 2020-03-13 | 2020-07-24 | 苏州金垚淼环境科技有限公司 | Pretreatment mechanism of low-temperature plasma collaborative catalytic purification device |
| WO2022247350A1 (en) * | 2021-05-25 | 2022-12-01 | 珠海格力电器股份有限公司 | Gaseous pollutant removal structure, discharge structure and gas purification device |
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| WO2022247350A1 (en) * | 2021-05-25 | 2022-12-01 | 珠海格力电器股份有限公司 | Gaseous pollutant removal structure, discharge structure and gas purification device |
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|---|---|
| CN106378258B (en) | 2018-03-30 |
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